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Creality - Ender 3 Pro - Pin27 Rotary Encoder Fix

STDCreality - Ender 3 Pro - Pin27 Rotary Encoder Fix

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Creation time:2019-08-01 18:44:27Update time:2021-11-29 11:43:34

Description

This is a revised Pin27 Board, which breaks out Pin 27 for a BLTouch/other Sensor, and adds a Schmitd trigger to help fix the rotary encoder.
I have also added PCB Standoff holes, so you can buy/print 11mm standoffs to support the overhanging edge.

Ideally this would completly fix the extra noise and inputs that are detected while turning the encoder, but it doesnt. It helps a fair bit though.

Design Drawing

schematic diagram
PCB

BOM

IDNameDesignatorFootprintQuantity
1Female to MainboardH1DIP-2X5P-2.541
2Male to DisplayP1IDC-10MS (BH-10)1
3Male to BLTouchP2HDR-3X1/2.541
40.1uFC1,C2,C3CAP_12063
510kR1,R2,R3,R4,R5,R6RES_12066

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