Hello All!
Im managed to setup Epson printer rotary encoder to read with an Arduino Uno and drive Stepper motor also from old Epson printer via Adafruit MotorShield.My problem is: encoder have 13000 lines/pulses per rotation and motor is 200 pulses per rotation.I need set it up 1:1 but dont know how because i`m absolute beginner wit arduino and coding.Also my question is it stepper best solution? Thanks!!
This is video link of setup:
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You cannot set it up 1:1, they are a factor of 65 out! And why would you want to?
The way this works in the printer is that the stepper is driven at a steady rate as the printhead scans and the encoder
generates the timing pulses for the individual pixels. This gives precise position to ink drops, but you can't stop the motor
at higher resolution just because there's an encoder. The best you can do is use a microstepping driver and get
perhaps an accuracy of a few thousand positions per revolution.
With a stepper motor the only use for an encoder is to detect mis-steps or generate timing pulses.
Hi MarkT! Thanks for replay!
I`m trying to make flatbed printer from old epson.Setup is not for printhead.Original epson motor is to weak to move flatbed platen on linear rails with timing belt puley.Idea is to replace weak dc motor with something stronger.Steppers is stronger and very precise.
With a stepper motor the only use for an encoder is to detect mis-steps or generate timing pulses.
You are 100% right!In this case arduino would read original encoder signal and send pulses to stepper (or somthing better if...).I have solution to attach extra 200 pulses rotary encoder to ASF shaft but i`m not shure is it solving my problem.
Have you find the solution of problem.
vickyindore:
Have you find the solution of problem.
You have attached yourself to a 2-years dead Thread.
Start your own new Thread and explain your problem.
...R