 | | Re: PA7
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(...) no,this is wrong. The servo output is J2 - 9, not J2 - 15. (...) you need a 5 volt source to power the servo. The Handy Board 5 volt supply can be used, but this will put a lot of stress on the system regulator. It would be better to get a (...) (29 years ago, 30-Mar-96, to lugnet.robotics.handyboard)
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| | PA7
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Another Q or 2 about using the servo capabilities of the handy board. It has been established that the servo motor output is actually digital output 9 (J2-9) (position numbered 15 (on the silk screen) of connector J2) 1) Is there a separate (...) (29 years ago, 30-Mar-96, to lugnet.robotics.handyboard)
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| | Re: two servo code
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(...) Actually, none of the default functions in pcode_hb.s19 actually use the IR transmit line -- you have to load in someone's ir transmit icb file. so that line is completely up for grabs. mike, it shouldn't be too ahrd to work from Randy's (...) (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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| | Re: 600 mA
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Thanks. This helps clarify things about the motor features alot. I was looking into transistors for the first time. I was wondering if you can connect the L293D output to the base of a high current transistor. ...and the collector and emmiter in (...) (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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| | Re: two servo code
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(...) Fly-in-the-ointment: I'd still rather disable the IR Xmit function than the buzzer. My application would like to use the buzzer to communicate audibe condition codes. I appreciate Randy's effort to sacrifice the piezo buzzer so we can supply (...) (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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| | two servo code
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(...) Hey Randy, it would be cool if you could modify that code to use TOC3, which is free and available on the expansion bus, rather than disabling the piezo. Maybe somebody else wants to do this. -Fred (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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| | digital output
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Hi, I am wondering if there is any means of digital output other than the motor ports such as the miniboard has. The miniboard has the bank of digital i/o ports. The handyboard has the digital input but I am not sure about digital output other than (...) (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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| | Re: 1050mA Dc Motor
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With teh TI chips, you might get away with it, just do not stall the motor for long. It will not work with the L293Ds, they are rated at 600 ma ( they might work for awhile) (...) (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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| | pcode, libraries for two servos
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For people interested in using the piezo output line for a second servo, I've put libraries and new pcode's online at (URL) under "IC-related packages"). The new pcodes disable the beeper code in IC, and free up the line for other uses. The library (...) (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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| | Re: 600 mA Limit
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(...) from the L293D ground? yes, this would be correct. Well, there would be 2.4 amps running through the chip's power source, into the motors, and into ground. ...totaling 4.8 A runniing throught the entire chip fro m a power dissipation (...) (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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