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. Quantity: 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 Stepper motor €30.00 Quick View Handles (set of all 3) €75.00 Quick View Extra cooling tray from €100.00 Quick View Led-light for the drum window €100.00