New answers tagged hardware
1
In general if your prototype works: You look at all the functions it needs, then buy the according components to cover all the functions, make a pcb design, assemble the the pcb, test it and modify your pcb prototype till it works.
When it works you send it to a certification facility to get it approved for sale.
If its approved you'll get in contact with ...
3
Yes it's possible. Cooling will not be a problem, in fact, most potting compounds have higher thermal conductivity than air (e.g. this special compound outperforms air by a factor of 30, 10 being more common for cheap compounds such as silicone or butalene rubber). There are however a few things to watch out:
Curing by-products. Compounds which are not ...
1
It is known that the Raspberry Pi 3 may have problems with some devices to boot. But you can use a special bootcode.bin-only boot mode. This will use a SD Card containing only the file bootcode.bin. Once bootcode.bin is loaded from the SD card, the Pi continues booting using USB host mode. How to setup this you can look at Raspberry Pi boot modes.
2
It's possible to make what you have work, but I'll warn you from experience it's tedious and time consuming.
Remove the connector (carefully) and cut off the end of your cable taking special care that the cut is perpendicular to the cable.
Using a single-edged razor blade or a knife with a thin, sharp blade, split apart each of the individual wires at the ...
1
It seems that it is not possible with common ribbon assemblies. Instead i just made and an adaptor board as suggested by @tlfong01
This is currently its PCB footprint would look like and would use right angle female headers and ordinary male headers. The ribbon would attach to the male headers and the female headers will go to the bottom of the hat.
0
They way ribbon cables work is this... If you're connecting to the GPIO pins on the Pi, they're on the top of the PCB. A HAT which connects to it has pins on the bottom to mate with the Pi, and they are located to allow this to happen. It's hard to understand from your question, but I'm guessing you're trying to use the ribbon to connect to the female ...
2
Yes, you can use Rpi to control a 5V relay with its switch
contacts/terminals (COM = Common, and NO = Normally Open), connected
in parallel to the two terminals of the shake switch.
References
(1) Raspberry Pi Appliance Monitor (Using 801s vibration sensor)
(2) AliExpress Vibration Sensor Module 801S Vibration Analog Output Sensitivity LM393 - US$2....
1
You can use a high side switch with a mosfet and control it with the power bank's charge input, just like you wrote.
0
With exactly the same external hardware and SD card content, the only difference between two devices is the bootloader. I would try to use the bootloader recovery image on the defective Pi before discarding it.
2
At first, it's not a good idea to put the provider link to an unofficial device. They've been checking the current that phones are using and it's easy to figure out you are using an unauthorized or an unofficial device then you may be warned by them.
However, to solve this problem, you should put the provider link to a phone and get an output link from the ...
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