SurvBot - Remote Controller - START PART2 | Details

Push buttons will connect to GPIOs
Joysticks are 2 axis potentiometers, will connect via ADC-I2C
- https://www.digikey.ca/en/products/filter/joystick-potentiometers/82?s=N4IgTCBcDaIFYHsCeBnALgSwMYGsQF0BfIA
- Leaning towards "PS2 like thumb joysticks"
  - https://www.digikey.ca/en/products/detail/sparkfun-electronics/COM-09032/6823623
  - https://www.sparkfun.com/products/9032
Screen could use I2C to keep it simple, will only be receiving data, might use SPI
**UART used to program ESP32
Modules:
- Power supply
- Motion control
- uC & Bluetooth
- Mode change
CH340 USB to UART
- will be attached to the underside of the PCB
- USB - bottom layer
- UART - bottom layer ->via -> top layer
Other stuff:
- On-of switch
- Indicator LEDs (power, BT connected, data Tx, data Rx)
- Emergency stop?
  - How to you implement a remote E-stop
- Battery holder and terminals
- Voltage levels, 3.3V for everything, maybe 5V - leaning towards the former
  - Should be able to connect to external

SurvBot - Remote Controller - START PART2