 | | Re: Servo DEinitialization.
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I'd go for the Coke can idea. Sounds like a surer shot. I thought init_expbd_servos(x), where x = integer from 0 to 5, was used to initialize the servos individually. Stupid me. I've been using init_expbd_servos(5), and, since I only had #5 hooked (...) (25 years ago, 13-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Servo timing...
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Hi Doc, The function call "init_expbd_servos(0);" turns them off, "init_expbd_servos(1);" turns them on. Something like "servo5=2300;" commands a servo to a position, but only if the servos are initialized as per above. Maybe I used a confusing term (...) (25 years ago, 12-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Desgning H-bridge
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The motor driver circuit is a bipolar push-pull current amplifier. It's really cheap, easy to build and works well with the Tamiya motor/gearbox kits available from (URL) or (URL) I'm sure it has its limitations, but works for small robot projects. (...) (25 years ago, 12-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Servo timing...
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How do you "de-initialize" a sevo? I am only familiar with the init_expbd_servos(x) command and with reassigning the servo(x) global variable to effect servo repositioning. Ross M. Tonkens, M.D. Medical Director Primary Care of Nevada 100 North (...) (25 years ago, 12-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Servo timing...
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(...) I don't know about the servo routines on the HB, but servos *do* start to jitter when the pulses get much below about 20Hz. This is not due to the pulse width 'fluctuating', it's because the refresh rate is dropping. It certainly is possible (...) (25 years ago, 12-Apr-99, to lugnet.robotics.handyboard)
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