The work before this session was quite important, especially due to the gears. We had to find the right size, the number of teeth, the size of the teeth and even the shape. The Fusion 360 file has had about ten versions.

As you can see, the center of each gears have an hexagon. It's because of the axes that is an hexagon to have the most point of attachment and therefore better to turn the gears. We have also almost finished all the important parts that will be ready to print as soon as the printers in the lab are free.
I haven't yet talked about an important part, the plate that will support the weight of the engine, it's the big part that you can see on the photo just above

During the session we did not have access to the printer, so we focused on another part of the project, the engine. At the start, we had the idea of running the engine via bluetooth, so for today's session we did some tests. We started by trying to run the motor, we found a circuit and a piece of code and we tested.

Here's the result :

All that's left for us to do is to print the parts and do the first tests.