Sample roasters, accessories, spare parts, and more › PCB Encoder Image 1 of 1 PCB Encoder €30.00 PCB for Encoder - for the rotary knob on the top plate. January 2020 we changed to a more accurate encoder for the nob. Add To Cart Added! PCB for Encoder - for the rotary knob on the top plate. January 2020 we changed to a more accurate encoder for the nob. You Might Also Like Quick View Solid State Relay, 25A €40.00 Quick View PCB Motherboard €350.00 Quick View LED-light for bean cooler €40.00 Quick View Extra cooling tray no handle from €69.00 Quick View Set: Cooling tray and Hopper for 200g €240.00