 | | Reflectance sensor hook up??
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I was looking on the Handy Board web page instructions on howw to wire sensors and motors to the HB. I thought that the two smaller ends went to ground and the longer transmitter side with a 330ohm resistor went to the 5v port and the longer recever (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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| | (Handy-B) wrong connection...
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Hello, I made a terrible mistake. By mistake I connected the pos. side of the powerheader (10 V) to the middle row of the digital ports (Vccc ; 5 V , (if I'm not mistaking)). With this action I probably blew up (a) component(s) on my handyboard. I (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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| | memory fault
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I was working with IR detectors this morning when this happened.... one detector was connected to the special detector port provided in the handy board. There was a second one connected to the first digital port. They were working fine and i was (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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| | Handyboard testing
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Have just got to the testing stage this lunch time and have a few problems. 1) When testing the motor ports the LEDs light up in the sequence M0 green - M0 red - M1 red - M1 green - M2 green - M2 red - M3 red - M3 green. This differs from the (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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| | handyboard stuff
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I,ve just received my Handyboard pcbs from Douglas Electronics and they were very quick in getting them over to me in the UK. I,ve just about got them chiped up and will be testing today. Books: In looking around for relevant books on the 68HC11 I (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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| | Blown Board!
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Hello! Boy do I feel silly! I'm captain of a robotics team here at Washington University and I ran into a problem tonight while soldering up my board. We've been building the board from the kit and all has been well until now. My assistant and I (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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| | Re: more downloading
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Hi Dave, can you try the DLM.EXE (not hbdl) program off the software resources web page? you will have to use the "-256" flag because it defaults to -512 for the e1 version of the 6811 which is probably not what you have. also, if you have windows (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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| | Re: Polyswitch Fuse
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Not a real systematic one -- that seemed to be enough to let motors blast away, but stop real damage from happening if the nicad pack got shorted out. remember, shorting nicads is a real hazard - 50 to 100 amps -- could almost start a car. -fred (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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| | more downloading
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Hi everyone, I posted a message a day or two ago about a downloading problem I am having with my HB. I have gotten my hands on a copy of hbdl.exe and it too fails to download pcode_hb.s19. I believe that I am following all instructions properly. (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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| | Polyswitch Fuse
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I looked up the part in DigiKey Catalog. Is there a reason for choosing a fuse rated at 2.5A with a trip of 5.0A? (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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