Backorder of dev board - Alternatives?

cryptoadvance / specter-diy

DIY airgapped hardware wallet that uses QR codes for communication with the host

MIT License

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Backorder of dev board - Alternatives? #75

Closed bitcoinheiro closed 3 years ago

bitcoinheiro commented 3 years ago

Hi, the recommended dev board is out of stock now. I've been researching a bit, and wanted to check out if these other boards might be compatible: STM32F746G-DISCO STM32F429I-DISC1 STM32H745I-DISCO STM32H750B-DK

Or better to wait for the other one (should be back in stock around August)

Thanks

stepansnigirev commented 3 years ago

I wouldn't recommend another board yet. Even though it's not very complicated to port Specter to another board we didn't really work on that yet. We may add support for 32f769idiscovery at some point - it's like an upgraded version of f469, but it is pretty bulky. Better wait until it's in stock again.

Looks like farnell still has a few boards.
On mouser it's out of stock
On digikey I didn't find information about availability :(
I also found these boards on aliexpress: one two. They are a bit more expensive and delivery time is also pretty large.
chip1stop has a few.

We also plan manufacturing these boards ourselves, but it kinda breaks no-supply-chain risk assumption.

bitcoinheiro commented 3 years ago

Got it!

And the barcode scanner? CM65 QR & BARCODE SCANNER MODULE would work? Seems like it would work: https://raw.githubusercontent.com/DFRobot/DFResources/master/Others/DFR0660%20Datesheet.pdf

https://www.digikey.com/product-detail/en/DFR0660/1738-DFR0660-ND/12324930/?itemSeq=333291406

stepansnigirev commented 3 years ago

I think so. Waveshare also uses QR scanning module CM65-S from Grow. Otherwise there is always a trigger mode as well.

bitcoinheiro commented 3 years ago

Went for the wavescanner at the end. Took some time, but got the board and the scanner. Looking good! 🥇

stepansnigirev commented 3 years ago

If you don't mind I will add this pic to the gallery =)

bitcoinheiro commented 3 years ago

Sure, no problem! :)

bitcoinheiro commented 3 years ago

Just saw a very cool 1/2d scanner, had to post it here. Price is good. I believe it has all necessary connections. https://m5stack.com/products/atom-2d-1d-barcode-scanner-kit

https://docs.m5stack.com/#/en/atom/atomic_qr

stepansnigirev commented 3 years ago

Looks like a very interesting alternative to the waveshare scanner. Looking at the docs I don't see a way to control the scanner with commands over serial, so probably it can be used only in trigger mode, but if the trigger is connected to D5 pin of the board it should just work.