3 ms·
I don't buy the PIC chip theory since that means it's either programmed in-situ which seems imposible, or they're ordered with premasked or preprogrammed ROM wh
by joezydeco 3y ago
I don't buy the PIC chip theory since that means it's either programmed in-situ which seems imposible, or they're ordered with premasked or preprogrammed ROM which is hellishly expensive.
- crote 3y agoIt could also be programmed during production. Clearly the LED manufacturer has the equipment to do wire bonding, so why not use the occasion to program it too? It'd be a bit comparable to the test and assembly process of the WS2812B, see [0] @ 2:30 or 6:10. [0]: https://www.youtube.com/watch?v=pMjhJ9kcaU4 https://www.youtube.com/watch?v=pMjhJ9kcaU4
- joezydeco 3y agoAnything is possible, I suppose, but burning EEPROM is an order of magnitude slower than anything these robots are doing.
- crote 3y agoI'm not too worried about that. The slowest part of EEPROM & flash operation is erasing an already-used page - and that's not the case here. Chips like these only have 1kB of flash - I'd be surprised if you couldn't program them in less than 100ms.