Skot

the BM1368 supposedly has digital, internal temp sensor. if this is true and we can use it, we might not need the EMC2101 at all.. just drive the fan from...

> EMC23xx series controllers are 5V tolerant But what about the EMC2101 on the bitaxe. need to check this out

it looks like the EMC2101 PWM pins are 5V tolerant too. https://ww1.microchip.com/downloads/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/EMC2101-Data-Sheet-DS20006703.pdf

added in 9afeb2c

the minimum supply voltage for the crystal oscillator we are using is 1.8V. if we switch to 1.2V we need to sort this out.

I'll try this out with some LCSC drop-in 1.2V oscillators. if it works I'd like to include in 402

Switched my v400 to the `MCP1824T-1202E` 1.2V LDO and `C5137262` 1.2V 25MHz Oscillator. seems to be working -- I'll keep an eye on it.

officially changed in 402

added in b9c48b8

This is awesome @MuffinCutter nice work! I use barrel connectors for power on my desk for testing. They are so much easier. They do get pretty warm at 3A though....