MicroPython Forum (Archive)

Yes its OSH park. The order link is on the readme.mk file (see link above) at the bottom. its a shared project so it should be no problem to order. its 54$ for 3 boards, so app 18$ per piece... because its a 4 layer board its twice as expensive as a 2 layer board. Maybe that could be optimized. I or...

I received my boards last week and spent some time this weekend to make it work. You can follow me on my repository https://github.com/hoihu/projects/tree/master/raspi-hat where I also placed some pics together with a writeup of what the board is capable of. I tested it with the SenseHAT (a capable ...

If your slave device needs re-asserting during transfers using a GPIO is actually the suggested way of doing it. From the datasheet page 874: """ When a master is communicating with SPI slaves which need to be de-selected between transmissions, the NSS pin must be configured as GPIO or another GPIO ...

I've placed a pull request last week for that issue:
https://github.com/micropython/micropython/pull/1790

it adds the missing constants and a description of those "hidden" arguments.

ok - thanks for the feedback. I'll give it a try then.

For my application I need to precisely measure incoming SPI packets, byte by byte, and place a timestamp with it that comes from a timer. The data arrives in in bursts or other irregular intervals and should eventually be safed (together with the timestamp) on the SD card. Two problems I see: - SD c...

@Turbinenreiter: Sure! I'll have them manufactured at OSH park as a shared project, so you can order the raw PCBs directly there once I've placed the order. They ship 3 units per order and it will cost around 50$, so around 16$ per board. However you should wait until I've received my boards as it m...

worked in review and ended up in changing quite a bit of stuff: - removed onboard neopixel footprints - they occupied too much space and it's easier to connect them externally. - support for raspi's GPIO's up to pin 28 (which should provide support for most HAT's I believe) - 3V3 jumper - Pyboard "r...

Right I see. Your idea about jumpering 3v3 and 5v makes sense. Good to know that in case both pyboard and raspi are accidentally connected to (different) USB supplies there isn't any cross current flowing. That doesn't apply to the external 5V pads that I have included and may be used in case there ...

should probably not connect the 3.3v from JP1 to the 3.3v from the pyboard thanks for pointing that out. You're right. That would certainly caused some damage... Even the other case with a HAT connected to the board wouldn't work I believe. The only pins that should be used for powering the board i...