I started working on the DIY obstacle course for Pi Wars 2021 today. Paint roller trays look like a good obstacle. Unfortunately the wheels fell off when I tried it!

All Square One’s electronics were mounted on a piece of thick cardboard. It was definitely time for an upgrade.

The Raspberry Pi on Square One had been running very well. I’d added some actuators for the Tidy Up the Toys challenge. These enable Square One to pick up wooden blocks and stack them. This worked pretty well but I noticed that the Raspberry Pi reported “Under Voltage” errors sometimes. Oops!

Here’s what I did to investigate and fix the problem.