Keep yourself cool this summer with this 3D printed desk fan! If you have a BBC Micro:bit, you can place it into the slot on the base, and use one of the codes below to use it as a thermometer. You can connect it to power when it gets too warm to switch it on.

https://www.microbit.co.uk/vnvltq  

https://www.microbit.co.uk/rcubrx 

The blade connector and stopper have holes sized 2mm diameter. If your DC motor pin is a different size, adjust this accordingly. Download the STL files from this page and get printing!

I have used crocodile clips, but for a permenant fan soldering the wiring to the motor might be better. You can also connect the Micro:bit and the fan to the same battery pack, I didn't do this because I only had 2 crocodile clips.

You will need:
1 x 3D printer + Filament
1 x BBC Micro:bit
1 x JST connector to battery pack
1 x AAA battery holder
4 x AAA batteries
4 x wires
1 x DC motor

I am looking to try and make this a Micro:bit controlled fan. If you have any ideas as to how this would work let me know!