This guy was designed at the end of 2021 with Autodesk Fusion 360. He did not take too long to put together though often now days I'm waiting for all the parts to show up. At first I had issues with the ultrasonic so I ended up soldering them, this resolved the errors I was seeing. He was first controlled with a Micro:bit v1 and then I had to wait quite a long time to get my hands on the v2 version. 

He is quite a compact robot and has a pretty powerful speaker on-board. Future enhancements I'd like to get to are below. 

1. A way to monitor the battery voltage (resistor divider circuit and some programming)
2. A better battery mount for the pack 
3. A good solid mount for the speaker