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 | | driving 3v motors
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| (...) The best solution here is to replace the HB's 9.6v batt with a 6v one. Once you get past the L293's, you'll be giving around 4v to the motors, which should be fine. -F (29 years ago, 5-Feb-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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fred
(score: 1.028)
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| | Re: Sony IR Transmission Routine
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| a wireless serial link requires surgery to IC. the HB side woudn't be bad. on the ic side you'd have to plug into the board comms routines (probably most are stashed away in a single library) and substitute your own code that deal with transmission (...) (29 years ago, 20-Feb-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: My handyboard does not run.....
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| dlm is apparently having trouble. you've got the right COM port because it's able to get through the first phase of the download (the dots and dashes bootstrap). someone else had problems using dlm on a pentium. it's an aging dos program and i (...) (29 years ago, 21-Feb-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | if hbdl is giving you problems...
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| make sure all DOS shells, as well as any other program that might be using the serial port, is closed! hbdl can't get access to the serial port properly if some other program is using it. Jeffrey, please let us know if that was your problem. -F (29 years ago, 10-Mar-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: h-bridges, current info
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| (...) the fuse is rated for about 2.5A continuous. If that is not enough, get one rated for more current, or replace it with a wire and make sure not to short out the nicads, or you'll get 30 to 40 A flowing. -F (28 years ago, 13-Apr-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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fred
(score: 1.028)
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fred
(score: 1.028)
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| | Re: Digital Outs?
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| (...) See the FAQ: (URL) Alternatively, are there any serial rs-232 facilities available on the (...) This would be easy to do; someone just has to write 6811 machine code to perform async serial out functions. you would be able to use any of the 4 (...) (28 years ago, 19-May-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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fred
(score: 1.028)
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fred
(score: 1.028)
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fred
(score: 1.028)
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fred
(score: 1.028)
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| | (no subject)
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| (...) all sensor inputs have a 47K pull-up resistor. If you remove this (by cutting the trace between the sensor input pin and the 47K resistor pack), then the analog inputs are pretty high impedence, like a meg or so. You should get the "M68HC11 (...) (28 years ago, 7-Jun-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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fred
(score: 1.028)
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| | Re: How to disable ROM on E9 part?
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| Hi Curt, something is wrong with your board. 1stly, the red LED should be completely off when in boot download mode. this is stated repeatedly in the doc's, but i reiterate it here. 2nd, you should not have 1.4v on the CPU when pwr is off. i don't (...) (28 years ago, 2-Jul-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Handyboard LCD
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| (...) Go to the IC Source page, linked off the software resources page. This has links to the source code. YOu need the pcocde for the HB, the special as11 assembler, and a shell script facility for the as11_ic program. these are all pthere. look at (...) (28 years ago, 4-Jul-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | encoders
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| (...) if your counting program is written in IC, and not assembly lang, it might be too slow and occasionally miss counts. -F (28 years ago, 17-Jul-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Memory/Sampling Rate
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| (...) not easily. half of the lower 32k of the 6811 address space is consumed by the '138 circuit to generate 4 digital input and 4 digital output areas. it would be possible to have some kind of data memory area making use of the signals on the exp (...) (28 years ago, 31-Jul-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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| | Re: Charging the battery
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| Make sure your adapter is 12v, 500 mA. If you have a voltmeter, measure the open-circuit voltage (when it's plugged into the wall, but not operating anything); you should get around 17 v. -F (...) (28 years ago, 7-Aug-96, to lugnet.robotics.handyboard)
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fred
(score: 1.028)
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