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Personal Electronics

Personal electronics includes any device, including fitness and health trackers, watches and wearable technology or personal GPS devices. Examples of these devices include the iPad, iPhone, Cell Phones, Smartphones, BlackBerry Hardware, Digital Cameras/Camcorders, Home Theaters, Home Security systems, Game Consoles, Wireless Hardware and Automotive systems.

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Hi,

I have a few electronic devices in a room which do not need to be on when there is nobody in the room.

The times are variable for when people would be in the room.

These devices are plugged into an extension lead which I would like plugged into a sensor socket.

Ideally what I would like is for when someone walks in the room, the sensor socket would switch on and the devices would in turn switch on too.

The opposite would happen when someone leaves the room for a few minutes.

I would like one that does not require a hub or Wi-Fi as I would have a switch connected to this sensor socket.

Also, it would be an advantage if the sensor socket did not turn off if people were sitting down watching TV but not making much movement.

What would you recommend?

Thanks,
Robbie
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Hi,

I d like to read ebooks pdfs on an ereader device. Dont know anything about it. Heard that some resist water, battery can last a month and you can use in the dark. Do they also sync to a Dropbox or can I upload my pdfs?  Do readers support all formats these days?

Features above I do like but which one should I choose?

Please advise.
J
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I read this article:
https://motherboard.vice.com/en_us/article/aek3za/bitcoin-could-consume-as-much-electricity-as-denmark-by-2020

which said in March 2016,

"he calculated that a single bitcoin transaction requires as much electricity as the daily consumption of 1.6 American households, and that number has increased since then"

Let's use his numbers just to find what the rough cost of the electricity was, at the point, for a single transaction.

The article also states "currently about 350 megawatts according to my own calculations, which is roughly equivalent to the electricity demand of 280,000 American households."

I calculate that at 1.6 times the daily requirement of a household, there are 5.48 MegaWatts used.

Bitcoin electricity in terms of American household

Please verify this logic is correct. And what is the cost of that amount of electricity?

Thanks
0
My receiver will only play output on one mode. If I first ask the Echo Dot to play high quality music from an internet source it plays through the receiver. Then when I change mode on the receiver over to TV and ask the Echo Dot a question, e.g what time it is, it won`t answer over the receiver.

I am thinking of connecting my Echo Dot to PC speakers and the receiver using an audio mixer that has multiple outputs. Will it play over the Hi-Fi system or just play over PC speakers?

The problem with my receiver is that it needs to be on a certain mode for the Echo dot to respond. I want the Echo dot to respond no matter what mode the receiver is on.

Thanks for all your help,
Robbie
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I am currently setting up my home cinema room, where I want to control everything using my Echo Dot. I have set up Sky Q, Amazon Fire TV stick, Blu-ray player, etc.. to my  receiver, where each device has its own channel. All of that works perfectly.

As I`ve mentioned, I want my Echo Dot to control everything. Because of this I want the Output from the Echo Dot to come through the receiver, no matter what channel the receiver is on,  i. e. if I am using Sky Q I still want to be able to talk to and hear the Echo dots.

Does anyone have a solution I could apply?

Regards,
Cillian
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When a person or a business uses bitcoin to pay for something, that could be an expense, am assets or a donation, is that transaction saved somewhere?

Thank you in advance.
0
I have a CoolingTech handheld microscope camera. It shows no model information.  The only place I find a driver is a pay site that asks for your credit card info. It costs around $40. for this microscope.
0
Hi,

I am a business person who works from home.

I am looking for a TV to use for TV/ Home Cinema and PC usage.

80% of the time this TV is used by my family for TV/ Home Cinema usage.

20% of the time this TV is used for PC usage.

I have been considering the FW-75XE9001 75" BRAVIA 4K HDR Professional Display.

I suppose any new TV would do for PC usage such as Ms Office, Internet, Video Conferencing etc., so what I am particularly interested in is getting the highest quality picture possible for the "Home Cinema" experience.
 
Thank you for your thoughts.

Robbie
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I have a Sky box and it is currently connected via a HDMI cable to my Denon AV receiver.

If the Denon AV receiver is left on 7 days a week it can be;
- Generating a lot of heat
- A fire hazard
- Using up a lot of electricity when not used

The Denon AV receiver is generally not used too much so would preferred to have it turned off until needed.

If the Denon AV receiver is not used, I would like the Sky box to use sound from the TV it would be connected too via a HDMI cable.

Is there a way to splitting a HDMI cable coming from Sky box to TV and Denon AV receiver so that when the Denon AV receiver is turned off, the Sky channels will still have sound?

Thanks,
Robbie
0
My son has set up a Raspberry Pi in the home to display images. He enabled FTP and told me to connect via WinSCP. I have done this, and I see all the folders on the Raspberry Pi. However, I cannot upload images or do anymodifications on the raspberry pi due to a permissions problem.

Any ideas what could be the cause of this?

I am logging in with his username and password, which has full rights to the Pi.

Thank you.
1
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I used this Note 5 for 2+ years with a great experience.  Great phone - large bright screen 5.7" 2560x1440 pixels, fast 4GB RAM and 32GB Storage, 16mp camera.   All good except.. battery life is terrible.  Time for an upgrade.  
Should I stick with Samsung and go with Note 8 or what would be other recommendations?  

Thanks in advance.
1
I don't remember if i put administration and password can you check and send to my email. And do i need internet to access the footage on cameras if yes or not can you walk me thru process Thank you.
0
It's the latest model Apple TV.
I am replacing a VCR with the Apple TV, and need the Audio and Video to be converted to connect to an old Marantz AV Receiver.

Is there an adaptor that will work and support Component as well as the 1-output Video?


Thanks
0
0
Hi
I recently used a power bank and it charged my mobile at 1250 apmere . I checked dis using the ampere app in android. Then i noticed that the usb port showed 2.4A which as i understood means its capabale of charging at 2400 ampere. Why its charging at lower then that what could be the reason.
Thanks
0
Hi
What are the things to look for when buying an ear phone.
I see many places things like stereo ear phones.
What does it mean. Is there anything else apart from stereo or mono.
http://www.amazon.in/Sony-Crystal-Clear-Stereo-Headphones/dp/B00EZ4VTDO?tag=googinhydr18418-21&tag=googinkenshoo-21&ascsubtag=269af308-f390-4018-8039-6720d0d4fcd1
There is one type of earphone like this which does not go inside the ears. And other type goes inside the ears.. which one is better.
Also specifically can you see some negative in the above product.
Thanks
0
How many things do I need to charge my "schumacher instant power" portable generator with solar panel?
screenshot.png
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I want a headphone that has multiple features such as good sound quality, noise cancellation, perfect battery timing, and light in weight etc. I visit few websites and there I saw many headphones of different brands but now the problem that I face is that which one I should buy, If someone knows some fantastic models of headphones and a trusted website where to buy from so, please reply me.
0
Hi Experts

I am having a problem trying to diagnose a problem I have with a simple high side switching circuit that is on a PCB. It works fine on a breadboard. The schematic is below. RL is a placeholder to where the rest of the circuit goes. The rest of the circuit I dont think matters because there should be no current draw if the mosfet if off. Please see attached schematic.
It is supposed to work like this. I have a microcontroller controlling the power to the circuit. To turn on the power I set the IO pin high and the Mosfet to M1 turns on and so grounds the gate of M2 and so switching M2 on. This all works fine.

The problem is that when I set the GPIO low I get 0V at the output of RL but if I measure the curent draw its around 150mA. This should be 0 or maybe just a few uA. Shorting R2 to ground has no difference.

I am having trouble finding out out to troubleshoot this and why this would be. Any help in how I can find the problem would be great.

Are these symptoms indicative of a faulty mosfet or something else.

Thanks!
Capture.PNG
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A group of individuals who are residents of suites in a condominium have asked me to find an answer to the question above.
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I am a regular user and loves to listen music the best headphone which i know are stereo one. Therefore, I want to buy a stereo headphone which also provides very high quality sound and have soft ear cushions that not hurt my ears. I visited few sites but now confused from which one I should buy my headphone.Kindly suggest me an excellent quality headphone.
0
The above was gifted. what would be most ideal specifications to aim for this (for elec wire to go with this for outdoor use)? when searching for outdoor electrical wire, below are specs are needed to be filtered thru.. can you guide how you would choose in the below availability..

Cable/Wire Type: Thermostat Wire,UF-B
Guage: /10/12/14
Conductor: 2/3
Allowed Amp: 15/20/30/50
Solid or Stranded

ideally, more durable to last a few years. (mainly for summer, and possible little snow blower too)
also ideal to have feature to roll it up when not in use
0
Hi, I am trying to verify the answer A and B shown  in the images below, I can follow the example but I cannot follow the 2 seperate questions where A. Vgs = 21.5 and the next B. Vgs = 20.5  If somebody could walk me through how they have arrived at the Answers A. 4.7mA an B. 9.2mA  please would be greatly appreciated.
jfet-question.png
jfet.png
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My daughter's kindle has an sd card. It says that pictures, videos and books will store on the sd card but they're taking up a lot of space in her internal memory. I have it set to store everything on the sd card that the kindle will allow and yet, I'm constantly having storage issues.
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hi everyone,
i'm trying to start a project for a box storage facility, i know thing allready have been done but i would like to do mine :)

the code is not the problem but the electronics yes. The problem is not U = Ri :) but how can i mux the doors sensors ? If some one open the door very fast and then close what would happen ... is important not to miss the change of state ...

So any idea is really welcome

Thanks very much
0

Personal Electronics

Personal electronics includes any device, including fitness and health trackers, watches and wearable technology or personal GPS devices. Examples of these devices include the iPad, iPhone, Cell Phones, Smartphones, BlackBerry Hardware, Digital Cameras/Camcorders, Home Theaters, Home Security systems, Game Consoles, Wireless Hardware and Automotive systems.

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Personal Electronics