Implement in next version:

- [ ] Shunt resistor to measure current draw of coral or of the whole board.

- [ ] Use the same gpiopin for fancontrol as the dev-board

- [ ] Better label output pins.

- [ ] Make connectors asymetrical for good connections.

- [ ] All pins that eventually are needed should be exposed somehow (testpoint or connector)

- [ ] Add LED's to GPIO pins to know their state

- [ ] Add switches or jumpers to power only certain parts of the board

- [ ] Connect Enable pins of Ic's to pin headers or gpios of the processor. In case it is needed it can be used. E.g power supply of SARA chip

- [ ] Add via or tp for everything you eventually want to measure.

- [ ] Place testpoint on vcc on last cap before entering ic.

- [ ] Add gpio level shifter

- [ ] Swap rx tx sara

- [ ] If v0.2 is still mainly for debugging: add buttons for reset and pwr pins: as in [this open source project](https://cdn.sparkfun.com/assets/a/c/b/1/0/lte_cat_m1_shield_sara-r4_schematic.pdf)

  

- Implement HDMI in first version to be able to debug: Is it even booting up?
- Make pin connectors for all essential pins: Boot pins, boot configure pins, reset pins, etc: Like this you have the possibility to measure the signal and overwrite it if necessary.
- First version should just be the coral connectors + power and all necessary things to boot. All other accessories
- Ask google before starting development what is the absolute minimum bare bones for a working base-board.