Raspberry Pi Case w/Fan Spacer and Breadboard

thingiverse

Adding a fan to a Raspberry Pi is not required, unless you are overclocking, but I had the fan from a previous project. I had made a spacer for the case lid, see https://www.thingiverse.com/thing:2897483 giving enough height if you were using a heat sink. Powering the fan from GPIO pins means the fan runs continuously, which could be annoying (my fan is very quiet), but I'm always looking to improve my projects. I came across this Instructable: https://www.instructables.com/id/Control-a-Cooling-Fan-on-a-Raspberry-Pi-3/ which allows for fan control based on CPU temperature, but it requires the use of a transistor and resistor. Wanting a clean look, I searched for breadboards and came across the modular breadboard made by sketchpunk, see sources. I combined by previous spacer after some redesign with a modified version of the breadboard. This allows for the control components to be neatly mounted on the case. Please feel free to leave comments for improvement, etc. PLEASE NOTE: this version will only work with the modified case, lid based on the design of 0110-M-P, see sources. The modified lid moves the fan hole over the center of the heat sink, and I modified the GPIO cover to allow access to the pins used in the Instructable referenced above. In addition, I am using a custom built cable to connect my Raspberry Pi 3 directly to a Prusa i3 MK3 EINSY board, rather than using the less powerful Raspberry Pi Zero.