Taz5-6 Stepper Encoder

thingiverse

This is a quadrature encoder that can be easily mounted on the spare hole of the TAZ5-6 extruder stepper. Simply stick on the pattern and secure with one 3mm screw. This versatile encoder is designed for my filament length creation project, but it may also be useful in other applications. I attach an encoder pattern to the stepper drive gear of my Taz5 and mount it to OPN761N opto's to create a quadrature encoder that provides 24 steps per revolution. The sensors run at 5 volts, while the open collector outputs drive a 3v3 volt micro with pull-ups enabled. The pattern is based on 30-degree segments, and the encoder's opto's are set 60 degrees apart plus 15 degrees to ensure that the encoder transitions occur at different times. This approach seemed to be the most reliable, given the relatively broad beam of the opto's used. To use this encoder, print the pattern from the included PDF file using a double-sided tape attachment on the bottom of the gear. First, apply the white leader and then wrap it around. For your convenience, the board is available for purchase through Oshpark.com. <a href="https://oshpark.com/shared_projects/ReDJZTA1"><img src="https://oshpark.com/assets/badge-5b7ec47045b78aef6eb9d83b3bac6b1920de805e9a0c227658eac6e19a045b9c.png" alt="Order from OSH Park"></img></a> Best regards, Kissys