So I just spent a few hours doing an investigating on the Heltec CubeCell boards. These boards were interesting (though they don’t have bluetooth) because:
- Super low power draw (similar to the NRF52s in that regard)
- A good sx1262 radio paired with the CPU
- Could have been a great ‘solar powered repeater’ board
Alas - after a fair amount of measurements and efforts, I don’t think Meshtastic could run on these boards easily. And even with a fair amount of work features would be highly limited. The problem is that these boards only have 16KB of RAM, which just isn’t enough for what we need. Currently with a bit of trimming it looks like we could barely get by with about 20KB of RAM - and that gives no room for the future.
So I hoped these boards might work - but nope.