4 ms·
> Where did they get a shaft encoder with over a million counts per rev? They didn't. They use a wheel with fewer counts per rev, read an analog value, and int
by ohazi 8y ago
> Where did they get a shaft encoder with over a million counts per rev?
They didn't. They use a wheel with fewer counts per rev, read an analog value, and interpolate. It's like micro-stepping a stepper motor.
https://hackaday.com/2018/11/15/an-in-depth-look-at-dexter-the-robotic-arm/ https://hackaday.com/2018/11/15/an-in-depth-look-at-dexter-t...
- Animats 8y agoOh, like a daisy-wheel printer.[1] The daisy wheel is mostly driven as a stepper motor, but fine positioning uses an analog sensor. [1] http://laughtonelectronics.com/oldsite/comm_mfg/commercial_diablo.html http://laughtonelectronics.com/oldsite/comm_mfg/commercial_d...