links
https://www.friendlywire.com/tutorials/rotary-encoder/ https://www.ebay.com.au/itm/267137021369 https://www.ebay.com.au/itm/267261776444 https://www.ebay.com.au/itm/267261776444 Weston Electrical Instruments Corp 301 Master Instruments S225
construction
boards
stm32f411e-disco stm f401re nucleo
LEDs
8x red / orange / nice
temperature sensor
encoder
Bourns PEC11H Series