Hi, I'm having an odd problem with my handyboard. After sitting over the summer, the board does not run on battery power at all. I replaced the batteries...
James Frye
frye@...
Oct 4, 2007 5:44 am
5420
Lets try to isolate the problem... Break out the multimeter, switch on the board, unplugged and post the following measurements: Voltage between ground and Pin...
... This sounds like your board has a short circuit or something. Mine takes about 20mA when running, and around 70mA with all the leds on. you would have to...
Pierre, Thanks for the quick reply. I'm not sure which of the pins is pin 1 - the diagram in Fred Martin's book doesn't show numbers, and if they're ...
James Frye
frye@...
Oct 4, 2007 5:35 pm
5423
Oops! Somehow the formatting of the voltages got messed up. Here's a corrected version: HB off HB on Battery: U13 1 0.82 8.45 2 0.42...
James Frye
frye@...
Oct 4, 2007 6:23 pm
5424
Well, it was correctly formatted when I sent it - and it gets correctly formatted again when I include the message in the reply?!?! Anyone know what the heck...
James Frye
frye@...
Oct 4, 2007 6:44 pm
5425
That looks like the unregulated side... Pin 3... Try the opposite side: This schematic might help: http://www.handyboard.com/schemv12/power.gif We are looking...
I thought I'd put in the voltage at all 3 pins? Is there a way to tell which is pin 1? (The only reference I have shows transistors as having E, B, and C...
James Frye
frye@...
Oct 5, 2007 10:49 pm
5428
Blown inductor will explain your symptoms. Usually it will blow if you short the pins inside the RJ11 connector. Replace this and you should be good! Fred...
That explains it! When I dug it out of the box this year, I found a small spring had fallen into the RJ-11 connector. That probably caused a short. But I'm a...
James Frye
frye@...
Oct 5, 2007 11:48 pm
5430
... I've been running IC on linux for years.... What sort of issues do you get?...
Generally that it often won't download code to the board, even though the communication check works ok. And I have to use my old laptop (which has a COM...
James Frye
frye@...
Oct 6, 2007 4:53 am
5432
... I threw IC out and went for standard linux tools instead.. have never looked back ;)...
... Yes, I've wanted to do that since the first time I tried IC, but have never found any good instructions on how to do it, and I just don't have the time to...
James Frye
frye@...
Oct 6, 2007 4:30 pm
5434
What Linux tools do you use? Last time I checked, the only compiler for the HB processor was closed-source and expensive...? Are you still using the IC...
... toolchain: http://m68hc11.serveftp.org/m68hc11_inst_ptc.php you only need binutils and gcc, gdb and newlib are optional. talker (to send programs to your...
Can the handyboard keep track of time? I am using two digital switches, one to start and the other to stop the motor. I am wondering if there is a way for the...
Hi all. I'm using the dual servo routine available on handyboard.com Yesterday, while testing my robot, the servo connected to the Port A bit 7 (digital 9...
Hello. yah. I forgot to mention that I've tried connecting other servos to it and they aint working too. Also tried connecting my current servo to the port A...
... You should be able to use any timer output, however there are only 5. One is used for the speaker, one is used for IR, one is used for LCD control, one is...
Hi Triffid! Thanks for the info you've provided. I don't think I need 16 servo ports, just need 1. So I'm thinking of getting rid of the IR timer u mentioned...
... the schematics in the handyboard manual show that TOC2 is available at pin 2 of U7, a 74HC132 quad AND gate. http://hc11-ide.funkmunch.net/board_layout.png...
Hi! thanks so much for your timely reply. My last question (yes i hope its my last) will be whether I can still use the servo_a7.icb file to control the servo...
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