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 Handles (set of all 3) €75.00 Quick View Brushless motor €40.00 Quick View Glass, bean inspection chamber €35.00 Quick View Chaff Drawer €45.00 Quick View Heating element €30.00