Please note- this page has been updated to allow the use of Wall following sensors.
The right hand wall sensor is now connected to ADC2 at step10
and the Trigger D12 is connected step12a

This task is to solder up the Piggy-back board that holds the Raspberry-Pi Pico.
This is what it looks like when it's finished:


There will be a piece of circuit board  "Veroboard" that has cuts already made to
keep seperate the pins that need to be.
This is a diagram of its underside:

The blue dots are where pins project that can plug into
  the regulator board underneath 
ArduinoNano Pin1 is second blue row right, and 
  ArduinoNano pin30 is top blue row right.
The red dots are the underside of the two 20-pin sockets that hold the Pico
Pin1 is lower row right - Pin40 upper red row right.

The 8 green dots are the underside of the 4 switches.

Photos of the Veroboard before adding components:
 

Soldering jobs:

  1. Prepare the  Front 15-pin  connector :
    Make sure the Pins are all pushed towards the bottom:
  2. Solder the Pins so that they project out of the copper strip side
  3. Solder in the two 20-pin sockets:
  4. Connect Arduino27  to Pico39 - 5v supply to Pico
  5. Connect Arduino29  to Pico38 - GND supply to Pico
  6. Connect Arduino17  to Pico36 - 3.3v Output from Pico
  7. Connect Arduino25  to Pico29 - Button  via one divider resistor (33kohm)
    Connect  Pico29 to Pico28  via the other resistor (68k)



  8. Connect Arduino21 to Pico32 - lsensor
  9. Connect Arduino20 to Pico31 - rsensor
  10. Connect Arduino19 to Pico34 - right stop/wall  sensor 
  11. Connect Arduino13 to Pico14 uninsulated wire link on top
  12. Connect Arduino14 to Pico15 uninsulated wire link on top
    12a Connect Arduino15 to Pico16 uninsulated wire link on top



  13. Connect Pico 36 (=Arduino17 3.3v) to switches 1-4( lower Switch connectors)-a long thin wire.
    Connect the 8pins of the switch block.

    This connection should be made to all 4 switch connectors at the bottom of the above picture

The remaining connections don't need to be made,
they should be connected already by the circuit board underneath.
However it would be a good idea to test whether they are connected

  1. Arduino16 to Pico26 -LED2 
  2. Arduino12 to Pico12 -Motors
  3. Arduino11 to Pico11 -Motors
  4. Arduino10 to Pico10 -Motors
  5. Arduino9 to Pico9 -Motors
  6. Arduino2 to Pico2 - serial
  7. Arduino1 to Pico1 - serial