Squirrels have fuzzy tails.
0 Members and 2 Guests are viewing this topic.
I can not find any on google either. Could anyone please give me an example code of how to do this or a link to one.
actually has little to do with the mcu and 1.5ms rarely works to stop a servo. removing pulses entirely is the best method. most srvos will stop dead.
its impossible for an avr/arduino type chip to supply 20ms frame rate with any useful degree of pulse resolution
as far as torque an unpowered servo has plenty
removing pulses is not only the best but actually the only way to stop a robot completely
there is no such thing as starving servos. 50hz (20ms) is a myth.
a robot will stop instantly when power or pulses are removed and its wheels will appear to be locked. solid.
What? Analog servo only receive power during a pulse. If pulses are spaced out too much the servo will loose it holding power.
a robot will stop instantly when power or pulses are removed and its wheels will appear to be locked
For some hobby servos, you'll actually break the output gear before you manage to move the inert motor through the gear box.
Quote from: jwatte on May 01, 2013, 11:23:46 PMFor some hobby servos, you'll actually break the output gear before you manage to move the inert motor through the gear box.Do you have an example in mind? I probably have a dozen or so different models of servos but I have never found one that wont let you turn the motor my turning the servo horn. One does need to start moving servos slowly (and some very slowly) but I haven't found a servo that wont move at all.
I've managed to do that to some Dynamixel MX-64s, which was not a fun experience :-/
I think we are all actually meaning the same thing, and just discussing the accurate description of how it works.
i do find these devices one of the most interesting aspects of buidling small robots. other interesting discussions might deal with how to modify for continuous rotation and also providing optical or hall position feedback. imo robots, like rc models, are among the most fun and educational hobbies. it seems to mix so many interesting technologies.