I'm trying to find suitable motors to drive the HB around.. but I'm afraid that under a load my motors will blow the motor drivers. under only the load of the...
Hello, I would like to know what is the period (or frequency) of the HandyBoard PWM motor driver signal ? I know that the duty cycle corresond to the motor...
Ok, I'm getting ready to connect my CMUcam to the HB, just to make sure so I don't fry anything... I have a question... Even if I'm not powering the cam from...
Correct, The common grounds are required for the serial communication. page 7 of the CMUcam version 1 manual shows the three serial communication lines as...
Sorry to keep bothering you kind folks, but I've got another question. I can't seem to get this Sharp IR Ranger working, I've got it wired up like so GP2D05...
I believe that device is a threshold sensor, that is it will signal low until an object is within the the threshold range. The range can be set anywhere from...
Ok Jim, I'll give that a shot and see how it goes.. I really appreciate all your help. -Josh ... low ... set ... bit ... loop ... forth ... around ... the ... ...
Hi all My name is khaled os: windows xp I am having a problem , I have bought a new handyboard and I have been trying to download the pcode_hb file but it...
Figured it out! the demo code on acroname is wrong... it does bit_set(0x100,0x80) and bit_clear(0x100,0x80) when it should have been 0x1000 rather than...
I'm assembling the handy board using the HB assembly document on handyboard.com, and i have reached to step 4.4 in which the test is to try to download the...
the m68hc11's "bootstrap" mode accepts 256 bytes of program and puts them into the m68hc11's internal ram, then runs the program. That is the first stage. The...
Do you mean that the firmware is actually downloaded in the ram and a small program on the 68hc11 runs it? I've connected the handy board to the PC on serial...
... You Built the interface charger board in step 3. You should be using it to connect to the Handyboard via the RJ11 cable. Be sure you have a four wire RJ11,...
Hello, I don't know if you are using the right power on the Handyboard. ARe you using 8xAA batteries or DC adapter with at least 12V and 500mA? Best Regards, ...
I've already connected the handyboard to the interface using the RJ11 & I'm sure that it is a 4 wire cable. I'm supposed to connect the interface to the ...
... not quite. In "bootstrap" mode, you can only download into the 68hc11's 256 bytes of internal ram - the external sram isn't accessable. A small "bootstrap"...
Hello ! I am facing a problem in assembling the handy board, in step 4.4.2 in the assembling manual , it is stated that on entering the bootstrap mode the...
I worked out that it was the LM2931Z-5 "low dropout" voltage regulator, constantly eating several milliamps. I removed it, connected a diode from the normal 5v...
HI all My name is khaled I have bought a new handyboard and tried to move with its motor drivers some dc motors. However, I found that with some motors fd(3) ...
either the motor is too big, or your batteries can't supply the necessary current or the battery leads are too long. the motor is drawing so much power that...
Hello all, I have found the link explaining how to give an external power to motors in the handyboard. http://handyboard.com/mods/hbmcut.html . I just want to...
I wouldn't feel good about pulling more than 100mA or so through it when it's in a socket and has no heatsink. with a heatsink it should be good up to 600mA,...
actually that 50 C/W figure is for the SO package.. it's 80 C/W for the DIP package used on the handyboard, putting your worst case temperature at ambient +...
I've got two RC car motors/gearboxes but I don't think they're going to work out(pull too much amperage, too big)... so I'm looking into other solutions... I'm...
Hi there I've some problems with handyboard First, in Test 4.4.2 in the Assembling the handyboard document, the board doesn't get into the bootstrap mode and...
try to replace the ram chip and the chip under the ram especially if there is heatings engineer Mohammed Atiyyat "Mohammad A. Khairy" <mdkhairy@...>...
Hi there Thank you for your reply...but I still have the problem... I think the ram chip and the one under it aren't defected, and they didn't get hot what's...
I just joined this group because I couldn't find a RoboJDE or Intellibrain/Ridgesoft group to join. If anyone knows of a better group for me, then please let...
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