CR-10 Integrated Octopi

thingiverse

This is a project that my son and I embarked on together. It was inspired by a design found at https://www.thingiverse.com/thing:2481483, although we didn't need to recreate the io shield since it was already available. However, we wanted our Pi-controlled system to not only manage fans but also regulate printer power. We carefully planned out the setup, ensuring that the Pi would be in charge of everything. We placed the mounted pi into position, marked one corner above the USB port on the inside, cut through, and then used that as a reference to cut the 54x20mm hole on the outside. Once the hole was cut, we applied epoxy to the mount and placed it where it needed to be, using the Pi itself as a guide. To secure the buck converter, we epoxied its mount to a sidewall out of the way. Once all parts were in hand, we connected the Buck Converter to a 12v DC power source and attached the output to a multimeter. We adjusted the power until it reached 5.0v DC, enough to power both the Pi and the Relay board. Next, we hooked up the rest of the system as described in the wiring diagram. We connected the main power line from the CR-10 to relay 1's center post using 16 guage wire, then linked relay 1 to the main power on the motherboard with smaller wires. We used the following components: Raspberry Pi 3b: https://www.amazon.com/gp/product/B01CD5VC92 4-channel relay: https://www.amazon.com/gp/product/B00KTEN3TM Buck Converter: https://www.amazon.com/gp/product/B008BHAOQO While we were inside, we replaced the 40mm case fan and the 50mm cooling fan with quieter models (specifically these): https://www.amazon.com/gp/product/B00261ABFK and https://www.amazon.com/gp/product/B071W93333 Between everything that used to be hardwired, we installed disconnects: https://www.amazon.com/gp/product/B06WGN56V2 to jump from the raspberry pi to the relay. We used these: https://www.amazon.com/gp/product/B00M5WLZDW for the last two components. Motherboard connections are explained in this video: http://youtu.be/2zfKGbwtR-A The relay with the pi (and some starter scripts) are explained in this video: http://youtu.be/OQyntQLazMU I used #4 machine screws because I couldn't find 2.5mm screws long enough to go through the spacers.