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by gertlex 413 days ago
Curious: what is an example of a robotics servo motor with one-directional control?

My experience around such started with pwm hobby servos, includes dynamixels, and I've worked with larger stuff using harmonic drive gearboxes. Can't recall encountering a "servo" that is one-directional.
1 comments
theamk 413 days ago
PWM-controlled hobby servo (1-2mS pulse evert 20mS or so) is the one-directional control I had in mind. When you are under $100 range a surprising number of servos use the same simple 1-wire protocol, even large-ish 150 kg-cm / 100W units.

Dynamixels are two-way, and they are an exact thing I'd wanted to see in search results.

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gertlex 413 days ago
Ahh, you seem to be referring to two-directional (two-way) communication, and I took it to mean rotational direction. Was imagining servos analogous to devices that simply power a motor in on/off states, so can't reverse.
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