We are putting our controller box together, and are adding some enhancements. Here the parts I used Thermal Pad: https://www.amazon.com/gp/product/B09GBMHVLC Black/Green LED Momentary Switch: https://www.amazon.com/gp/product/B01LZ4OU04 NRF51822 Bluetooth Module: https://www.amazon.com/gp/product/B07X4D7BKF The "Grove passive buzzer" I'm still waiting for I ordered from here: https://www.robotshop.com/en/seeedstudio-grove-buzzer-module.html Controller: LittleFOCerV3 from https://www.makerspev.com/ Enclosure from Flowglider: https://www.flowglider.com/ The resistors are basic 1kOhm thru-hole resistors (half a Watt or less)