Technical requirements

This chapter uses various tools and materials. You will need to have the right tools and be able to work safely. You’ll find this equipment in the shopping lists from Chapter 1.

You will require the following materials:

• 3 mm styrene sheet – A4 or larger
• A soldered Raspberry Pi Pico
• The solderless breadboard
• Precut jumper wire kit
• The motor controller with headers soldered in
• A 5V 3A UBEC
• 8 x AA battery compartment, with switch
• N20 micro-metal gear motors with encoders
• Ball caster ¾ inch with 4 x M2 nuts – 2 x M2 x 6 mm
• Hook and loop/Velcro dots
• Wheels with N20 d-hole hubs
• 1n5817 or equivalent Schottky Diode
• A standoff or a mounting kit with M2 standoffs, bolts, and nuts

You will need the following tools:

• A plastic cutter
• A pair of scissors
• A metal ruler that’s at least 250 mm long
• Sandpaper – 400, 600, and 1,200 grit
• A pin vise drill...