Raspberry Pi Forums

BMS Doug

Always worth checking who the seller actually is rather than believing the "by" name.

If you want to buy multiple I would recommend checking the official re-sellers, some of them have a pre-soldered header version which can be sold to you in a higher multiple (I've seen 20)

BMS Doug

Yay, destruction time! :D Have you any tip about how to disconnect only those pins on this tiny component (other than probably phisically remove them forever with a cutter)? Searching on another forums I also found this thread where a user suggested to completely remove the chip and connect 5V dire...

BMS Doug

If Vout is 6.2 - 7V then there is no guarantee that a 5V supply will be enough to drive it.

BMS Doug

I would suggest feeding the board with a reduced voltage and seeing how the voltages change, try 9V if you can. Hi BMS Doug, at the moment I don't have a 9V DC supply reliable at home so I tried with an higher voltage, 24.4V. I hope this will help anyway! These are my measurements: Pin1: 7.18V Pin2...

BMS Doug

I would suggest feeding the board with a reduced voltage and seeing how the voltages change, try 9V if you can.

BMS Doug

I Agree that the JWBV 795D is the voltage regulator, I was also unable to locate a datasheet. The voltage regulator will have a recognisable set of inputs and outputs, the first 4 are likely to be present on most voltage regulators: Vin (Input Voltage) Vout (Output Voltage) En (Enable) Gnd (Ground) ...

BMS Doug

Thank you for the reply BMS Doug! I'm not sure if i'm in need of a new(decent) multimeter. I wasn't getting any reading from 1,3,4,5,6, or 8. I was getting in between 3.7 and 4.8 on 2 and 7. This was when you were feeding it from a 5V supply? Please connect a 12V supply to the board for testing pur...

BMS Doug

Pi supply power switch How does it work? Once you have finished using your Raspberry Pi, you just shutdown using the sudo halt command, and then a couple of minutes after the full and safe shutdown the Pi Supply Switch cuts the power to the computer. From this point, once again, all you would need ...

BMS Doug

pnaven03 wrote: ↑
Fri Sep 01, 2017 11:46 am
Thanks for the reply,

No we are not using usb power for LCD.

Any methods to complete turn off raspberry pi 3 using commands.
please any one help me on this.

You will need additional external hardware to achieve this.

BMS Doug

Hiroc80 wrote: ↑
Thu Aug 24, 2017 9:31 am
Hello guys. I bought the BW auto monitor from Amazon. I connected the monitor to my Rasberry Zero but it does not work. Does anyone know how I can modify it to 5V? Attach the monitor photo. Thank you

We'd need to know about the voltage regulator chip to help.

BMS Doug

Hello all, I have this board. 5" reverse monitor pcb https://imgur.com/gallery/4K83d I'm having trouble getting it to run off of 5v. It's a 5" reverse monitor. The 8 leg(pin?) Chips are labeled "MK 25D40BTIG 1717" (located in the middle of the board) and "Toehcode TD1519A FB516462" (side of pcb: th...

BMS Doug

No, the wifi and bluetooth aren't connected by USB, gadget mode is still available.

BMS Doug

Worth contacting the dedicated team of Raspberry pi related testers at UL?

Read more in Raspberry Pi's blog article.

BMS Doug

I doubt there is any offline Polish voice recognition for the Pi. The Google AIY kit might be interesting for you. Note that the "intelligence" and featureset of such systems will heavily depend on your own programming skills , the voice recognition aspect is only a small part of the puzzle (albeit...

BMS Doug

1dot0 wrote: ↑
Thu Jul 27, 2017 3:00 pm
I have installed Raspian Jessie via NOOBS, but then updated vos update/upgrade -
so what does this mean for my problem eventually? Better buy an old Pi2 again?

You can't buy an old Pi2 (except maybe 2nd hand), the Pi2's that you can buy now have the same processor as the Pi3.

BMS Doug

The PC will output 5V to the Pi's USB circuitry. As the Pi0 doesn't have a complicated power circuit this will power up the pi, with the potential problems listed previously.

BMS Doug

You may find that running more than one of those sensors on a single I²C bus isn't possible. The MCP23017 has three address pins that allow you to change it from 0x20 to 0x27 inclusive on the I²C bus. According to the technical data it is possible to write a new address to each sensor, they all com...

BMS Doug

I'm speculating: Pi will not work correctly while connected to both USB controller and computer, The USB can only communicate with one device (such as the USB controller, which is then capable of communicating with more devices) and connecting two at once will mean that neither will work. adding a s...

BMS Doug

Why would one agree with a statement that is demonstrably incorrect? To be contrary for the sake of exaggeration? I'd been tempted to add that n-dimensional geometry was essential, but thought that would be a step to far. 95% certain it's a spambot, given the profile link is to a 'marketing agency'...

BMS Doug

I Like it so far, but this is only the 2nd topic that I have looked at.

BMS Doug

I've found a few scattered references to using AIY offline (mostly articles published when AIY was released) but no concrete confirmation that its possible or instructions on how to implement it.

BMS Doug

Okay I do not understand where Google fits in with the voice hat Once you have set up your google account and set the verification keys into the voice HAT it will automatically connect to google to process the voice recognition. I don't think that it holds sufficient voice recognition processing on...

BMS Doug

Now that we have (finally!) got the http://www.astropicase.com website online and live, Chris has been able to announce that rather nice Switchboard. Even though my contribution was no more than sketching out an idea and saying "make so, number one!", I'm still quite proud of how nice it turned out...

BMS Doug

So, two possibilities: Your power supply was inverted and you put 5V onto Gnd and Gnd to 5V (Fairly unlikely as they are pretty well marked on your kit and you had tested it. (Speculation): Your 12V 0.3A (3.6W) supply couldn't cope with the load of the pi and its power became unstable, dipping and r...

BMS Doug

Model breakdown: Model B: 3 million units. Model B+: 2 million units. Model 2B: 3 million units. Model 3B: 5 million units. Others: 1-2 million units. Now nearly 15 million total, with 10 million Raspberry Pi produced in the UK factory. Other includes the A, A+, zero and zero W, Am I right in think...

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