upon running the "test encoders" program, I realized that my J2 encoder value does not change from 1000, it merely flickers between 1000 and 999 when I move the motor. All motors and all other encoders work fine. I spliced the encoder cable near the encoder and found that when the teensy is plugged in, the voltage difference between the red and black encoders near the encoder is 4.8V. I then decided to directly wire the blue encoder cable to pin 16 on the teensy, and the brown encoder cable to pin 17. However, the encoder is still not working. Is there any other checks that I can do or should I conclude that the encoder is broken?
Thanks,
Yifei
the encoder was broken and after getting a replacement, things are working again. I think I applied too much pressure to it while assembling the robot
I directly wired the encoder cables to the teensy board, bypassing the mess of wires and connectors in between for the standard wiring. Once I verified that that wasn't working, I can only conclude that the encoder is broken.
If you email Stepper Motor Online, they can mail you just the encoder without the stepper motor.
@angus.muffatti I had the exact same issue, where it flickers between 1000 and 999 when I move the motor. The issue is that the coupling in the gearbox is not locked tightly or at all. This is actually noted on the StepperOnline website for the J2 stepper motor. Tightening those screws fixed the problem for me!
Hi All, I've just assembled my robot, and I'm getting the same issue on the J2 encoder. All other encoders are OK, but J2 is dead / changes only between 1000 and 999.
I've followed your advice, opened the J2 cover and tightened one of the bolts
