 | | stepper motor speed
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Hi, Recently, I have connected the wires out from the 4 motors ports on the HB and then directly connected to the driver L298.Next, the o/p of L298 is connected to the stepper motor which drawn 3A. I supply 4A parallel to the 2 motors. Hence, each (...) (26 years ago, 20-Sep-98, to lugnet.robotics.handyboard)
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| | Re: lcd screen pinouts
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the LCD should work fine. On the HB, pin 1 is on the top left, and pin 14 is on the top right. Just hook them up in order and you're all set. Fred In your message you said: (...) (26 years ago, 18-Sep-98, to lugnet.robotics.handyboard)
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| | lcd screen pinouts
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Hi I have purchased an lcd screen for the handyboard, however it's not the ridji-dij lcd. The pinouts are as follows pin symbol function 1 Vss 0v 2 Vdd 5v 3 Vo contrast adjustment 4 RS register select 5 R/W read/write 6 E enable signal 7 DB0 databit (...) (26 years ago, 18-Sep-98, to lugnet.robotics.handyboard)
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| | Handy Board expansion board
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As I am new to this mailing list, I wondered if anyone could tell me if it is possible to obtain expansion board pcb's, or is it still at the beta testing stage. Looking at the web pages it seems to give several more outputs/inputs. Any more info on (...) (26 years ago, 18-Sep-98, to lugnet.robotics.handyboard)
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| | Card readers
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Is there anyone familliar with magnetic card readers, I would like to know where I could get some information on them (communications, etc...) Thanks, Joe Hoffmann E-Mail jhoffman@it.sait.ab.ca (26 years ago, 15-Sep-98, to lugnet.robotics.handyboard)
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| | Re: <obstacles>
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Ok. If you used 2 motors in m1(right) & m3(left) , and your sensor was at the front (and only one), and in port 15, a short program for running it could be: /*Start of avoid.c */ void main(){ while(1){ /*Puts program in an infinite loop*/ fd(1); (...) (26 years ago, 15-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Re: <obstacles>
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I don't really know how to explain finite state machines (FSMs) or parse trees...(I'm not in computer science...) but my artificial life class's homepage is still up and the text is available through it in post-script format ((URL) everyone that (...) (26 years ago, 14-Sep-98, to lugnet.robotics.handyboard)
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| | Re: WARNING: +5 supply exposed
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I got my PCB from Miranda Robotics (mail to colin@prospero.u-net.com for more information) in England, and the trace is fully covered. Apperently, not al HandyBoard PCB's ar exactly the same. Thanks for the tip anyway. Jeroen van der Vegt. (...) (...) (26 years ago, 14-Sep-98, to lugnet.robotics.handyboard)
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| | Handyboard on 9V battery?
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Can it be done? I'm using the Handyboard to control my hexapod robot and weight is a problem. At the moment I have 8 AA batteries connected which are not particularly weight light. I'm not using any of the motor driving functions of the board, just (...) (26 years ago, 14-Sep-98, to lugnet.robotics.handyboard)
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| | Re:
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(...) There's many ways you can approach obstacle avoiding. There are neural nets, evolutionary code (incl. genetic programming and genetic algorithms), finite state machines, and there's hard-coding it into the program (which, of course is no fun (...) (26 years ago, 14-Sep-98, to lugnet.robotics.handyboard)
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| | (no subject)
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Hi,all I am trying to write neural-fuzzy code for avioding of obstacle. I am using handy board. I never wrote a code for fuzzy logic. can anybody suggest me any good site on web for fuzzy logic or any book or any code which he has written. Thanks in (...) (26 years ago, 14-Sep-98, to lugnet.robotics.handyboard)
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| | Manual reading
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Hi, Besides the source of manual on Interactive C from the internet, Is there any other sources on the IC software for me to find out more on IC , Eg book ? There are a lot of text book concern the software like C++, java , how about Interactive C . (...) (26 years ago, 12-Sep-98, to lugnet.robotics.handyboard)
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| | WARNING: +5 supply exposed
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Take a moment to look at your Handy Board. There is a thick trace along the top, right and bottom edge. This is your regulated +5 line. Now look very closely at the outer edge of this trace. It should be completely green (covered with solder mask). (...) (26 years ago, 12-Sep-98, to lugnet.robotics.handyboard)
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| | WARNING: +5 supply exposed
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Take a moment to look at your Handy Board. There is a thick trace along the top, right and bottom edge. This is your regulated +5 line. Now look very closely at the outer edge of this trace. It should be completely green (covered with solder mask). (...) (26 years ago, 12-Sep-98, to lugnet.robotics.handyboard)
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| | My problems with digital outputs
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Dear Mr Fred Martin, My project requires digital outputs and does not need to have motor outputs. I have also read your FAQ and one of them states that by adding a hc374 IC chip in a similar fashoin to the one driving the motor circuits, and (...) (26 years ago, 12-Sep-98, to lugnet.robotics.handyboard)
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| | Re: analog problems
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Dear Sam, It is so strange as you already replace all the chips. The "testanalogs()" is used to test A/D feature and analog port of MC68HC11. It will prompt you "Press START to test knob..." You then press START button and the reading of A/D port (...) (26 years ago, 12-Sep-98, to lugnet.robotics.handyboard)
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| | analog problems
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I am building my handyboard and have been unable to succesfully execute testanalogs(). testmotors(); and testdigitals(); work but when i testanalogs(); either the board displays the current position of the knob (1-256) and freezes, displays the (...) (26 years ago, 11-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Ramping up and down.
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(...) Not quite, but I made good use of the PWM to provide automatic, feedback-adjusted motor control for straight-line tracking. It might give you some ideas. My 'bot uses differential steering (it looks like a small wheelchair) and used to cruise (...) (26 years ago, 11-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Difference between designer and OEM Polariod kit
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(...) The OEM kit contains two transducers and two ranging circuit boards for about a hundred bucks or so. The designer kit contains only one each of the above, plus an experimental demonstration board with a digital display and driver circuitry, (...) (26 years ago, 11-Sep-98, to lugnet.robotics.handyboard)
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| | Ramping up and down.
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Does anyone have any code using the new smooth PWM motor routines to ramp up and ramp down the speed. I have tried a few things with out much successs. Thanks Bill James | work: 972.480.2306 Product Test Specialist | Pager: 972.598.6201 (...) (26 years ago, 10-Sep-98, to lugnet.robotics.handyboard)
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