Remote control, speed control printed in PLA and TPU.

HW components:

AZ delivery Arduino nano v3 mini usb, AZ nrf24L01 radio, AZ TP4056 micro-usb battery charge module, AZ MT3608 Step up module, AZ 0.96 oled 64x128 px, switch SS12D00G3 2 position SPD, spring, led diode, 6x m3 screws and threaded inserts, linear hall effect sensor SS49E TO-92S, wires. 4 6x2 magnets, 1 cell lipo battery (size about 23x40x8 mm  - 1000 mAh). 

Glue the TPU gasket to the remote right side.

Receiver: arduino nano, nrf24l01. 

Some arduino programming needed for the remote and receiver ;-) Enjoy!