Computing Tips Archive

You can manage your Google Home’s lighting and volume for night-time use

Article

You can use the Google Home app to manage how your Google Home smart speaker works during the evening and night hours for a better night’s sleep

Google Home Has A Hidden Night Mode (And We Love It) | Lifehacker

From the horse’s mouth

Google

Manage volume and LED brightness with Night mode (Instruction sheet)

My Comments

Some of you may want to interact with a Google Home smart speaker during the wee hours of the day such as to ask for the time or weather. Or you may touch the device and work it as a night-light. But it can be too bright or loud at these times in a way that people can be woken up at odd hours. Here, some users have to adjust the volume to avoid this risk of disturbance.

But Google has a “Night Mode” feature that allows you to determine the maximum volume and device lighting brightness during times when you don’t want to be disturbed.

Here, you have to use the Google Home mobile-platform app on your smartphone or tablet. As well, your mobile device has be on the same logical network as the Google Home device, which would typically be the same Wi-Fi network when you are thinking of your home network.

When you open the Google Home app, tap on the gear-shape Settings icon and you will see the “Night Mode” setting in the list of settings. There is a toggle switch to enable or disable this mode, and when you enable this mode, the LEDs on the top of your Google Home device will dim while the maximum speaker volume will be softer.

There is an option to schedule the times and days of the week when the Night Mode feature will be active. This may be of importance if you want to make sure it comes in to play on weeknights for example.

There are settings to determine the maximum speaker volume and lighting brightness that will apply to your Google Home smart speaker while it is in the “Night Mode” condition.

The Do Not Disturb option on the Night Mode settings page mutes any notification or system sounds that your Google Home smart speaker makes. But timer or alarm signals will “break through” this setting so you don’t miss that extra alarm you set to wake you up so you can pick up that loved one from the airport as they come off that late flight.

But I am not sure whether these settings can be configured for individual devices or all of the devices bound to the same account. This may be of importance if you want to reduce the volume and lighting brightness on units installed in the bedrooms while one or more units installed in the common living areas are maintained at bright levels; or you want to maintain a common setting across your home.

A feature that can improve on this would be to have the LEDs on top of a Google Home device stay alight but at the maximum brightness to allow you to use the device as a night light. This is more so for those of us who would keep one of these devices in the corridor near the main bathroom or within that bathroom to serve as a “beacon” night-light to enable use of the bathroom at night.

At least Google has provided an option to allow the Google Home device family to work properly without disturbing other people’s sleep at night.

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It will be easy to use your voice to delete what you previously said to Alexa

Amazon Echo on kitchen bench press photo courtesy of Amazon USA

You will be able to use your voice to delete instructions you said to your Amazon Echo

Articles

How to See and Delete Alexa’s Recordings of You | Tom’s Guide

You Can Now Tell Alexa To Delete Your Conversations | Lifehacker

My Comments

An issue that anyone with a voice-driven home assistant device will be wanting to have control of is what the device’s platform has recorded when they spoke to that device. It also includes the risk of your device being accidentally triggered by situations such as an utterance of the wake word in a recording or broadcast. A previous article that I have written describes how to achieve this kind of control with your Amazon Echo or similar Alexa-based device.

But Amazon have taken this further for the Alexa platform by allowing you to speak to your Alexa-based device to delete recordings left on the platform during particular time ranges.

How to enable this function

You have to use the Amazon Alexa app or Website to enable this feature but you don’t have to install another Alexa Skill in to your account for this purpose. Once you are logged in to your Amazon Alexa app or Website, enter the Settings section which would be brought up under a hamburger-shape “advanced-operations” menu.

Then you go to your “Alexa Account” option in that section and bring up the “Alexa Privacy” menu. Go to the “Review Voice History” screen and you will see the  “Enable Deletion By Voice” option that you can toggle on or off. Having this feature on will allow you to use the voice commands that will be listed below. When you enable it, you will see a warning that anyone with access to your Alexa-based devices will be able to delete what was said to the Alexa ecosystem.

Commands

“Alexa, delete everything I said today” will cause your Alexa-based device to delete anything you said to it from midnight (0:00) of the current day to the time you gave that instruction.

For greater control, Amazon will roll out this other command: “Amazon, delete what I just said”. This will delete what was last said to your Alexa device and can be of use when handling a nuisance-trigger situation for example.

Conclusion

I would see the other voice-driven assistant platforms provide the ability to delete what you said under your voice control as a user-enabled option. This will be more so as the light shines brightly on what the Silicon Valley establishment are up to with end-user data privacy amongst other issues like corporate governance.

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Should we be managing multiple email accounts?

Windows Live Mail client-based email interface

Multiple email accounts may be beneficial to your privacy and work-life balance.

Some of us may find it convenient to handle all of our email through one account. The advantages that are often seen include dealing with one inbox and sending from one account.

But we are increasingly entering a world where we have to deal with multiple email accounts.

Why run multiple email accounts?

One reason this is becoming important is to keep business and private email separate. Here, it may be about preserving a separate business and social persona, or simply to delineate your time between home and work activity. Similarly, the separate email address for business / work email is an advantage in preserving a professional appearance.

As well, the correspondence associated with your personal email address that you maintain yourself isn’t subject to the same kind of legal scrutiny that the correspondence associated with your business email address would be subject to. This is important if your workplace or business is to change hands or is a party to legal action of any sort.

People who have a public-facing business life such as politicians or celebrities will maintain a public-facing email address to maintain an email correspondence consistent with that public-facing role. This is becoming more important where people in the public eye are becoming more vulnerable to “dirt-digging” – the practice of trawling for any information to discredit one’s reputation.

This practice is also becoming important with the emails we “tie” with various social-network presences. Here, we may want to operate a professional-looking persona on the public-facing social-media profiles while keeping a private persona that you have on your personal social-media profiles.

The situation extends to where we have our email address on material that the public have easy access to, whether it’s that notice on the church noticeboard or our entry on that petition.

Those of us who engage in online dating are having to find that maintaining a separate email address for use with dating apps and Websites gives us greater control over what potential suitors know about us. It may also offer a chance to control when they can contact us while keeping this life private from family or work.

Account types list in the Add Account option including option to add POP3 or IMAP4 accounts

It also applies to businesses and organisations who maintain a public-facing email address that is written on the public-facing material. This keeps a professional appearance and keeps your staff’s business and private email more private. Similarly, you can maintain multiple email address for particular job descriptions or workflow requirements.

Conversely, some of us maintain a separate email address that we give to marketers or online email newsletters as a crude method of spam control. Similarly, separate email addresses are being seen as important as a failover measure should one email server crash or as a security verification means for email services.

How is this achieved?

Who will provide the email inboxes

email settings in Samsung Android email app

Add Account option in email settings on Android (Samsung) email app

Your workplace will give you an email address that is tied to your tenure with that employer. The provision of a tied email address will also apply for most college students or staff who have access to college IT resources. If you run a small business or other organisation with a Web presence and own domain name, your Webhost or domain name provider will offer at least one email inbox under the main domain name you purchased.

Most ISPs or telcos will provide you with at least one email inbox as part of your Internet-service deal. It will be something that is very common with fixed-line Internet service especially from major providers.

Of course, there are the Webmail providers like Outlook.com and Gmail who will provide you at least one email address for free. It also includes the secure email hosts who provide a secure user experience at a premium price.

Now we are seeing the rise of dedicated service providers who provide email inboxes as their main business. Such providers will offer Web-based or standard client-based access to these mailboxes.

What to look for

Samsung Android email app account types

Account types offered by the Samsung Android email app

A feature I consider very important for email accounts is that they support multiple-device access and full “on-the-road” use. Typically it would mean use of a major Webmail host or a host that implements “hosted Exchange” or IMAP4 email protocols. This is important where we use a mobile device or secondary laptop computer to work our emails and want to work our email from anywhere.

You may find that a Webmail interface that allows the operation of multiple accounts from competing services may come in handy if you are using shared computers or public computing facilities.

How do you handle the multiple email inboxes

Different users may manage their email from multiple accounts using one of two paths. One is to use a single interface for all of the email accounts, with the other being to use different interfaces for different accounts.

It may include having all your personal email accounts operated with one interface like a Webmail interface while your work or business email accounts are operated with another interface like a business-optimised email client.

One email interface for all accounts

Most email interfaces, whether Web-based or client-based, will support the operation of multiple email accounts. In this case, using the one interface will underscore the idea of going to one email interface for all of your email activity.

Your email interface will have an option in its account-management settings to add or delete email accounts. Most of the current interfaces will have a “quick-setup” routine for the popular Webmail providers; and will have a setup option for accounts using Microsoft Exchange, POP3 or IMAP4 accounts.

Receiving email

The user experience for reading your email will have separate inboxes for each of the accounts you manage. You may also find that some of the email interfaces like the GMail Web interface may offer a combined-inbox view for all of your email accounts with better interfaces using visual clues to differentiate each account.

Sending email

Should you send an email, you will be asked to choose which account you use to send your email via.

On some email interfaces where you choose the account you are operating at the moment like Windows 10’s Mail app, the account you are operating would be the one you send your email via. Other interfaces may require you to determine which account you send the email from when you click the “Send” button. As well, most of these interfaces may offer a default-account setting for new email, with the option to override this when you compose your new message.

The default behaviour for replying and forwarding would be to use the email service you received the email via for sending the replies or forwarding the email.

Your contacts list

Of course the contact list kept in your email interface will, in most cases, be shared amongst all of the accounts you operate.

Different email interfaces for different accounts

On the other hand, some of us may choose to operate each inbox with its own interface setup. This may be due to an email client not handling multiple inboxes how we want it or simply to delineate the operation of each inbox as a separate task.

This is a simple task with operating each interface with its own account. You will have to copy across contact details you want to use across multiple accounts if you operate them with separate interfaces.

A combination of this situation and the former situation will apply if you choose to operate some accounts with one interface and others with another interface. This is a useful practice for those of us who want that “church and state” separation between business and personal or public and private email activity.

Conclusion

Operating multiple email accounts may come in to play as a measure to protect your privacy and manage our email inbox properly.

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How to set Bedtime mode on iOS so you don’t miss important calls

Options area in iOS Bedtime Mode screen

Select Options to set up the Bedtime Mode behaviour

Apple’s iOS operating system since version 12 have support for “Bedtime” mode which allows you to have a good sleep. This is achieved through optimising the display to reduce blue light in a sleep-friendly manner along with default automatic enablement of “Do Not Disturb” mode where the iPhone won’t ring through during the hours the Bedtime mode is in operation. This will be heralded by your iPhone ringing a phrase of Brahms’ Lullaby with a music-box sound when that mode is effective.

But some of us may don’t want to miss important calls that come through at night due to work or personal reasons. An example of this could be a person who is a registered keyholder for a premises and needs to know of alarm incidents affecting that premises. Or someone you expect home may be arriving late and wants to let you know they are on their way or changed plans. In a simple case, you may not want to miss that important call from someone who is on the other side of the world.

The default implementation for Bedtime mode has your iPhone in “Do Not Disturb” mode where your iPhone won’t ring or sound a notification tone for text messages while that mode is in effect. But you may want most of the sleep-friendly benefits of this mode while being able to be woken by those important calls.

iOS Bedtime Mode options screen with Do Not Disturb option called out

Clear the Do Not Disturb option to allow calls and texts to come through during Bedtime Mode

To enable this, you need to go to the Clock app and select the Bedtime screen. Select “Options” and turn off the “Do Not Disturb” mode on that screen to allow calls to come through. The display will still be dimmed through this time but the iPhone will ring or sound a notification tone.

You may also have to check for scheduled “Do Not Disturb” times in case you used this feature to set up a “do-not-disturb” period surrounding your normal bedtime. This is a feature that an iOS user may have implemented before updating to iOS 12. You can check this feature in the “Do Not Disturb” option in the Settings app.

If you do use the “Do Not Disturb” option, you can allow certain caller groups to break through and cause your phone to ring irrespective of when this option is in effect. One of these is “Favourites” which allows you to mark contacts as a “favourite”. Or you can use the Groups option to allow calls from contact groups that you have pre-defined. This is important if you mark out your contacts in to contact groups like “work” or “family” and is a complex procedure that requires you to use your Apple iCloud.com account on a Web browser.

The use of a predefined caller list to override “Do Not Disturb” may not work well with callers who call you using VoIP or from behind a business phone system. This is because you may find that the caller ID for their call may be different from their phone number due to them, for example, calling from the nearest extension rather than their own extension.

iOS and Android could natively follow the Symbian (original Nokia feature-phone operating system) approach where you have different situation-specific alerting presets that affect your phone’s audio / vibration / indicator-light behaviour. This can also allow the use of one or more priority call lists so that callers you select for a particular situation can ring through. Such presets can be linked to operation modes like the “Bedtime” mode or alarm clock so they can be effective during these modes.

As well, Apple could simplify the process of creating and managing caller groups on the iOS contacts list while you are using your iPhone’s user interface. This is important for processes like adding new contacts to your list or revising your contacts, and can make the process more intuitive.

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Why is there an audio driver with your computer’s graphics chipset?

The HDMI and DisplayPort outputs make use of the display audio device driver for sound they send to the external display

Some of you may take stock of what device drivers and software exist on your Windows computer and may find two or more audio device drivers on your computer with one being referred to as an “HDMI” or “Display” audio driver. Such a driver will have a reference to the graphics chipsets that are installed in your computer. Why does this driver exist and how could I take advantage of this setup?

The standard audio setup

Most computers are nowadays equipped with an on-board audio infrastructure of some sort. This was initially a sound card but is nowadays an on-board audio chipset like Realtek or Intel HD Audio. Here, it would have its own digital-analogue audio circuitry and would be serving integrated speakers or audio equipment like computer speakers that are connected to the computer’s own audio jacks.

The better implementations would have an SP/DIF audio output which would serve an outboard digital-analogue converter or digital amplifier. In this case, the audio infrastructure would repackage the sound in to an SP/DIF-compliant form either as a PCM stream or a bitstream supporting Dolby Digital.

In this case, the above-mentioned sound infrastructure would work with its own driver software and be listed as a distinct audio device in Windows. With most of the recent laptops that have sound tuning provided typically by a name-of-respect in the professional-audio or hi-fi scene, this driver also has the software component that is part of this tuning.

HDMI and DisplayPort adds a point of confusion

Windows Sound Control Panel

HDMI output for monitor as a unique audio playback device in Windows

HDMI and DisplayPort display connections have the ability to transport a digital audio stream along with the video stream over the same cable. Therefore, display-chipset and graphics card manufacturers have had to support digital-audio transport for host-computer audio through these connections.

In some early setups, it required that the computer’s sound card or audio chipset expose a digital-audio stream via the HDMI or DisplayPort connection. With graphics cards, this typically required a wired connection between an SP/DIF digital output on a sound card or motherboard audio chipset and a digital input on the graphics card.

But recent implementations used a cost-effective digital-audio processor as part of the graphics infrastructure which simply repackages the digital audio stream from the host computer to a form that can be handled by the display or audio device connected via the HDMI or DisplayPort connection. During the initial setup of an HDMI or DisplayPort connection, it will be about determining what audio codecs, bit-depths and sampling frequencies the connected monitor, TV, home-theatre receiver or other audio-equipped device can handle.

Sony STR-DN1060 home theatre receiver press picture courtesy of Sony America

If you connect your computer to your monitor or TV even via the HDMI connections on one of these home-theatre receivers, you will be using the HDMI audio subsystem and display audio driver as outlined here

This also applies to computers and display setups that use the USB-C port as a “DisplayPort alt” connection like some of the laptops that have come my way for product review. But if you are using a USB-C expansion module that has audio connections, you may find that this device may use a USB-based sound chipset to serve those connections. Typically this chipset will use the USB Audio Device class drivers that are part of the operating system rather than the “display audio” drivers.

If you connect your computer to your display via an HDMI audio device like a home-theatre receiver, soundbar or HDMI audio adaptor, you will find that the audio device will be identified as the sound-output device for the “display audio” device.

In this case, you would see another audio device listed in your computer’s audio device list with a name that references your computer’s graphics chipset like Intel Display Audio or AMD HDMI Audio. The only audio-endpoint device that these drivers refer to are whatever audio device is connected to your computer’s HDMI or DisplayPort connection.

In-room AV connection panel

If you use the HDMI input on your in-room AV connection panel like this one at Rydges Melbourne, you would have to use the “display-audio” sound driver for your computer’s sound

Where you connect a computer to a speaker-equipped display or audio device that uses HDMI / DisplayPort alongside a traditional audio input connection like RCA or 3.5mm jack, the “display audio” driver would be used while you use the HDMI or DisplayPort connections. This also applies to the device connection panels you may find in your hotel room and you connect your laptop to the HDMI input on these panels. In this case, you have to use the “display audio” driver when you select the “virtual channel” or source associated with the HDMI input.

What do I do about the existence of these “display audio” drivers?

If you are trying to rationalise the driver software that exists on your computer, don’t remove the “display audio” or “HDMI audio” drivers associated with your computer’s graphics infrastructure. This is because if you connect a TV, monitor with speakers or home-theatre audio device to your computer via the HDMI or DisplayPort connections and you remove the “display audio” driver, the sound won’t play through devices connected via those connections.

Instead, keep these “display audio” drivers up-to-date as part of updating your computer’s graphics-infrastructure software. Here, it will preserve best compatibility for the communications, games and multimedia software and Websites you run on your computer if you are using audio-capable devices connected via HDMI or DisplayPort along with this audio-capable hardware hanging off these ports.

Also remember that if you are using an audio-capable display device connected via the HDMI or DisplayPort connections, you need to use the “diisplay audio” driver to hear your computer’s or application’s sound through that device. This may require you to have it as a “default sound playback device” for software that doesn’t support audio-device switching like Spotify or Web browsers.

Computer systems with multiple graphics chipsets

Computer systems that implement multiple graphics chipsets may also run multiple “display audio” drivers for each chipset. Here, the audio to be sent via the HDMI or DisplayPort output would be processed by the “display audio” chipset for the currently-used chipset.

Some setups may require you to manually select the “display audio” chipset that you are using when you are directing the sound via your audio-equipped display device. This may especially apply to the use of external graphics modules.

But on the other hand, a multiple-graphics-chipset computer may implement a virtual “display audio” or “HDMI audio” driver that automatically steers sound output to the HDMI or DisplayPort device via the currently-used graphics chipset without you needing to intervene. This kind of driver will be relevant with computers that implement NVIDIA Optimus or similar logic to automatically select the appropriate chipset depending on whether you are after high graphics performance or longer battery runtime.

A solution for “steering” Windows sound output towards the devices you want

You can steer particular applications’ sound through your laptop’s HDMI output using the display audio driver

When I installed the Windows 10 April Update (Build 1803) on my computer, I had found the improved sound-management ability that this operating system update offers can make better use of this arrangement. I chose to create a sound setup to steer multimedia to better sound outputs while keeping the audio prompts that Windows makes during errors towards a lower-quality output and documented how this is done.

Here, the “display audio” driver will earn its keep as a way to allow the speakers in your smart TV, home-theatre setup or audio-equipped monitor connected to your computer’s HDMI or DisplayPort output to be used only by the software that you want.

There are two situations that this will encompass. One is to have a laptop connected to the large TV or home-theatre setup for some Netflix binge-watching or full-on game-playing but you rather have Windows sound its notification sounds through the laptop’s own small speakers.

The other is where you use a monitor with not-so-great speakers as your primary display but want music or other multimedia to come out through a better sound system connected to your computer. It also includes desktop computers used in an AV playout role with a projector and PA system conveying the audio-video content to the audience but using a monitor with not-so-great speakers as the operator’s display.

The first situation involving a laptop would have the standard audio driver serving the integrated speakers set up as a “default” sound device while the Web browser, game or multimedia software uses the display-audio driver as the output device. The second situation using a monitor with not-so-great speakers would have the display-audio driver as the default driver while the Web browser or multimedia software handling the AV content to be played to the audience uses the audio driver associated with the better sound system.

Conclusion

Simply, the “display audio” or “HDMI audio” driver works with your computer’s graphics infrastructure as a separate audio driver to present sound from your computer to an audio-capable monitor or A/V device connected via its DisplayPort or HDMI connections.

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Hey Cortana! You can work with GMail

Article

You can now connect Gmail to Cortana for calendar, mail, and contact support | Windows Central

My Comments

Windows 10 Cortana Notebook menu

Select “Connected Services” in Cortana’s notebook

Some of you may just use GMail simply as another Webmail account but you can have client-side access to it from certain email clients like Windows Mail, Outlook or your Android email client. Here, if you are using Windows Mail for example, you may find that you could have Cortana work your account from their simply by adding it to the list of accounts your Windows Mail installation works with.

But you may also just use the Web-based user interface for your GMail account and simply use it also as a contacts and calendar storage for your Android phone, especially if you do upgrade your phone frequently.

Add a Service menu in Windows 10 Cortana Notebook menu

Select GMail as the service to add to Cortana

Here, you can create a direct link between Cortana and your GMail account so you can summon her for information from that account. This can be of importance if you buy the Harman-Kardon Invoke smart speaker which is powered by Microsoft’s Cortana voice-driven personal assistant.

To do this, open Cortana on your Windows 10 computer and click on the Notebook icon. Then click on Connected Services in the menu that pops up. Select “Add a service”, then select “GMail”. Here, you will be asked for your Google username and password that you operate your GMail account with. Enter these credentials and Google will then ask you whether you want to allow Cortana access to your account. Once you assent to this, your GMail details are available to Cortana.

This will become more of a trend as an increasing number of social networks, Webmail services and the like provide the necessary “hooks” to allow the various voice-driven personal assistants to work with their services.

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Editing favourites with Microsoft Edge

Article

Edit URL item in Favourites context menu

Edit URL item in Favourites context menu

Windows 10 Tip: Edit any URL in your Microsoft Edge Favorites | Windows Experience Blog

My Comments

A situation that can affect many Web users is to have a “favourites” or “bookmarks” list with out-of-date links in it. This can be brought about by a Website moving to a new domain or its link directory being reorganised. The latter situation can be brought about due to implementation of a new content-management system or substantial renovations to the site layout.

Most Web browsers have the ability for you to edit a Web address in the Favourites or Bookmarks list, typically through you right-clicking on a link, selecting an “Edit” option, and manually editing the Web address.

But the Microsoft Edge Web browser that is part of Windows 10 didn’t have this kind of in-place editing functionality. It was in a vain attempt to achieve a reduced-clutter user experience for viewing Web pages on your Windows 10 computer. This would have caused you to navigate to the resource’s new location, add it as a Favourite then delete the old reference from the Favourites list.

Microsoft has added in-place link editing to their Edge browser that is delivered with the Windows 10 Fall Creators Update onwards. Now what you can do is to right-click on the resource’s link in your Favourites list, then select “Edit URL” in the context menu to make the Weblink for the resource editable.

If you are using a touch-only arrangement like a 2-in-1 convertible laptop in a “tablet”, “presentation viewer” or “tent” position, you need to dwell your finger or stylus on the Web resource’s link until a square or circle appears, then remove your finger to expose this context menu. There are some stylus implementations that may have a button that you use to enable the context menu.

But now you can revise that Web link in Microsoft Edge’s Favourites list without having to add the new link then delete the old link.

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Controlling Wi-Fi and Bluetooth on your iOS 11 device

Articles

If you can’t manage your iOS 11 device’s WiFi or Bluetooth from the Control Center, you may have to go to the Settings App.

iOS Control Centre’s Wireless Toggles Don’t Turn Off Wireless Radios | Lifehacker Australia

My Comments

Apple has just rolled out iOS 11 as an update for your iPhone’s or iPad’s operating system and, as expected with “.0” versions of operating systems’ major functionality updates, there will be a few bugs and issues here and there. This is typically due to Apple, like other software vendors, rushing the major-functionality version of the software out the door to satisfy the vendor’s marketing team’s needs. In this case, the goal here is to get the new iPhone X and new iPhone 8 range, which will be loaded with this operating-system version, ready to sell to the crowds queueing outside the Apple stores and mobile phone retailers on the day they are released i.e. 22 September for the iPhone 8 and 8 Plus, and 3 November for the iPhone X.

One of these is the inability to manage Wi-Fi and Bluetooth from the Control Center on your iOS device even though the buttons do exist there to enable and disable this function. Here, you may want to disable one or both of these functions for your privacy when in the vicinity of Wi-Fi networks you don’t trust, to save battery runtime when you are not connected to a Bluetooth peripheral or a Wi-Fi network or simply as part of troubleshooting a Wi-Fi network or Bluetooth peripheral connection.

The symptom shows up in the form where pressing the Wi-Fi or Bluetooth icons in the Control Center has no effect on the Wi-Fi or Bluetooth functionality. But you can work around this by going to the Settings app on your iOS device. Then you tap on WiFi or Bluetooth to select the appropriate function you want to control.

Disable the appropriate function by sliding the switch to the Off position whereupon you will see no references to Bluetooth or Wi-Fi activity and the green marker will disappear. Or enable the appropriate function by sliding the switch to the On position where you will see the green marker appear and references to the Bluetooth or Wi-Fi activity appear.

Of course, keep an eye on the Settings app for newer “point-release” versions of the iOS operating system and update your iOS device with these newer versions as they arrive. Here, these versions will typically rectify bugs, security exploits or weaknesses that become knowledge to Apple.

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Photos not the right way up on your TV?

Media contents in Dropbox folder available on DLNA-capable Samsung smart TV

Pictures that are copied in using Windows Explorer may not always appear the right way up

A problem that can surface with some photos that you view using your Smart TV, set-top device or similar equipment is that they don’t appear the right way up.

It happens more so with those pictures that come in from an email whether as attachments or downloadable links, or from a cloud-storage service. Similarly it also happens if you transfer the pictures from your device to your computer using the operating-system’s file manager i.e. Windows / File Explorer or MacOS Finder by using the file-copy procedure. This latter process is something most of us do when we want to make digital pictures that we took at someone’s location available on their computer.

These cameras record information about the photo orientation as part of the picture file when you click the shutter

The main problem is that today’s cameras and mobile devices record the orientation of the photo in the file that represents the image as part of machine-readable EXIF metadata. Most of the file managers recognise this metadata and use it for creating the thumbnail that is seen for each file. Similarly, when you upload photos to an image-sharing or social-media site, you will find that these pictures will be shown the right way up thanks to this metadata. It is also true of image management software which even creates copies of the imported files that are the “right way up” as part of the image-import process.

Windows 10 File Explorer

Copying photos from your camera using Windows / File Explorer or other file managers may not guarantee the best results with photo-rotation metadata

But a lot of hardware media players like smart TVs, set-top devices and electronic picture frames don’t recognise this EXIF picture-orientation flag and show the picture with the incorrect orientation. It can be exacerbated with DLNA media-streaming setups where the DLNA media server doesn’t use this flag to rotate the picture to the correct orientation when it is being served to the client device. The same problem also extends to some photo-viewer and presentation software that doesn’t understand the EXIF photo-orientation tag properly.

Another situation that always surfaces with photo orientation is if you are photographing something on a table, floor or similar horizontal surface. Here, the camera or smartphone doesn’t properly register the orientation due to the orientation sensor being driven by gravity. In this situation you would still have to manually rotate the image even if you were importing it with software that understood this EXIF orientation metadata.

How can you work around these problem when you want to show images that are drawn in from email or copied over from that digital camera?

Cast To Device option to show picture on DLNA video player – may not always work properly with the EXIF photo-orientation metadata

One way would be to open each portrait image using a photo editor or bitmap image editor that understands the EXIF photo-orientation tag like Windows Paint or Adobe Photoshop, then save the image as a JPEG file using the software’s Save As command. This will typically rotate the image the right way up and strip off confusing EXIF tags. It would appeal to situations where you are preparing a folder of photos to be shown, perhaps on a USB stick or using “Cast To Device / Play To Device” on your Windows computer and a DLNA-capable video device.

For Windows users, especially those who regularly copy photos to their computer using Windows Explorer / File Explorer, there is a free program that can batch-rotate photos in a folder correctly. The program is called JPEG Autorotate and is freely available from its author’s site. Once installed, it appears as a secondary-menu (right-click) option to allow you to rotate a single image or all the photos in a folder including the subfolders without quality loss.

If you are using a computer as the primary storage or “staging post” for your digital image collection, the best path is to use the photo import functionality that is part of the image management software installed on it. Typically this will be Windows Photos, Windows Photo Gallery or Photos for MacOS (formerly iPhoto) that will be with your operating system. As well, make sure that the “rotate photos on import” option is selected in your software’s import settings.

This information will help you with making sure that digital pictures appear the right way up no matter the device you are using.

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How to look after your video projector properly

Praise and worship at church

Making sure your video projector is looked after properly will mean that it will serve your organisation for many years to come

You have bought that new video or data projector for your small business or community organisation and are excited to have it as the “go-to” device to show large images on that wall but you need to make sure it lasts a long time. This is easily achievable if you look after it properly.

This also applies to those of you who purchase a video projector for that home-theatre setup that you invest time and money in to.

With projectors that aren’t based on solid-state “lamp-free” LED/laser-based lighting technology, the lamp that shows the image on the wall or screen also generates a significant amount of heat while it is on. Preventing a build-up of heat in the projector avoids damage to the machine’s lamp and other electronics installed in the unit.

I have written out this information especially for situations where your projector is likely to be used by many different people such as a small business with a high staff turnover rate or a community organisation that has many different volunteers coming through. It is also available as a download-to-print PDF reference sheet that you can keep with your projector’s documentation or operating procedures for your AV setup.

Make sure you set up the projector on a sturdy surface before you turn it on.

This is especially important for transportable setups where you set up the projector before each showing and pack it away when you are finished with it. The table or desk that the projector is to sit on must be stable and in good order. As well, if you use something to raise the front and/or back of the projector to get the picture right, make sure that the setup that you use is sturdy.

Economy data projector with VGA input sockets

The projector has to be on a sturdy surface

In the case of an integrated installation, you must use a good-quality mount kit and make sure that the projector is properly anchored to the mounting surface which should be installed properly.

Make sure you properly shut the projector down at the end of the session

Projector remote control - power button called outUse the standby switch on the projector’s control panel or its remote control to shut down the unit.

At this point, the projector’s fan will run for some time to remove the built up heat from inside the unit while the lamp and electronics is switched off. This will be indicated with a different light that flashes or glows during this process.

You are ready to disconnect the projector from the AC power when its fan stops and only the “standby” light glows or no lights glow on the projector that indicate operation.

Avoid the temptation to turn the projector on and off too frequently

If you need to blank the screen during your show, such as while you are preparing other material to be shown, use the Mute or Blank button on the projector’s control panel or remote control or use the similar “blank-display” function on your display computer’s software or source device.

If your projector uses filters that are easily replaceable, clean them on a regular basis.

Also cleaning the projector’s ventilation grilles on a regular basis can also help towards maintaining proper cooling for that machine especially if it is used or stored in a dusty area. This can be done with your vacuum cleaner’s nozzle.

Be aware of how your projector’s fan sounds while you are using the unit or shutting it down.

The fan should be making no more than a quiet whirring or whooshing sound. If you hear excessive noise like a grinding, buzzing or squealing sound from the projector’s fan, it is a telltale sign that the fan’s bearings are on the way out and it could cease to do its job as well as distracting your audience. This leads to unreliable operation and excessive heat buildup.

When you hear the excessive noise from the projector’s fan, have the projector taken to a repair workshop to have the fan replaced.

Conclusion

Once you know how to look after your projector by avoiding unnecessary heat buildup, you can be sure it will serve you reliably for a long time.

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