Since I had the Fresnel lens, since quite a while laying around, finally, the mechanical and electronic parts for SolarBot One have arrived from Germany and Spain. I plugged the mechanical parts together, and the aluminium profiles are great. Though I noticed already some possible improvement. I choose 2cm thickness, which will work, but, thicker is better, probably 2.5cm. The lens mount needs some stabilisation with steel plates. And I decided to cut the Fresnel lens in half, then I can fit everything conveniently in a 1×0.5m bag for strollers. Some pictures will follow!

Now, next comes the more challenging parts: the electronics. I need to mount the steppers properly and the z-axis for the sandbox is a bit tricky one.