Below are the circuits relating to the main chassis PCB. These are followed by those for the Mezzanine board which holds the processor and connected to the sensor boards
Main Chassis PCB
Firstly the battery and main power circuit that powers the motors. Note the protection diode to prevent the battery being connected the wrong way round
This provides the 5 volt supply for the processor and motor driver
This is the motor controller circuit
These are the left and right motor connections
These are the connections to the mezzanine board through the two 6 pin connectors
Finally the power smoothing circuits
Mezzanine PCB
Below are the circuits for the mezzanine board
This connects the mezzanine board to the main chassis via two 6 pin connectors
These are the processor Raspberry Pi Pico connections. They are the same for whichever version of the Pico you are using
This is the 16 pin sensor connector J1
There are 2 breakout connectors J2 and J5 that can be used in several different ways as described
These 2 LED indicators can be used as you wish, such as for showing which program has been selected on the tactile switches. Also 2 of the 3 tactile switches SW1 and SW2 can be read by the Pico. The 3rd one SW3 is a reset button for the processor.
