 | | 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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| | Difference between designer and OEM Polariod kit
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Hi, What's the difference between the Designer and OEM polaroid kits. Which one do I need to hook up the polaroid sensors to the HB? Thanks (26 years ago, 10-Sep-98, to lugnet.robotics.handyboard)
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| | Questions for Fred
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I guess I should have learned by now, to investigate more before jumping out and asking. I examined the two versions of the lib_hb.c the difference in the analog is the absence of the following code in the smooth pwm code: int _raw_analog(int port) (...) (26 years ago, 10-Sep-98, to lugnet.robotics.handyboard)
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| | Questions for Fred
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Fred, or who every can answer this. I have implemented the smooth PWM routines and are very happy with them. I notice now that there is a fix for the analog sensor reading bug. One file that is replaced is the lib_hb.c file, which was also the file (...) (26 years ago, 10-Sep-98, to lugnet.robotics.handyboard)
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| | Re: bootstrap mode in assembling the HB
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yes, RP4 is four isolated resistors, and this being part of the serial line circuit, definitely explains your problem if you are using the common-terminal style. you can just install four 1K resistors if you don't have the correct r-pack handy. fred (...) (26 years ago, 9-Sep-98, to lugnet.robotics.handyboard)
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| | bootstrap mode in assembling the HB
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hi At present I am up to section 4.4, "serial line and stop switch". I have installed all the components as per the section but when testing by applying power and holding down the stop switch, the HB will not go into bootstrap mode. I have not (...) (26 years ago, 9-Sep-98, to lugnet.robotics.handyboard)
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| | Fw: Current Rating use on HB
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(...) that (...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | encoder use in stepper motor
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hi, How can i use my self build encoder to locate the position when my robot reach a position ? Is it suitable to use a self build encoder together with the stepper motor? The self build encoder consists a photoelectric reflector sensor mounted (...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | Re: IC dip 120 or Ic dip 210
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(...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | Current Rating use on HB
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Hi, What is the current rating allow to be use on the HD if currently I am using a stepper motor of rating 4.5V and current 3Amp ? Is it all right directly plug it into the HB? How should I increase the acceptable current rating on the HB? How (...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | IC dip 120 or Ic dip 210
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Hi, Is there anybody came across such IC Dip 210 or Dip 120 ? rgds, chia (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | using interupts from IC
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I want to drive 3 stepper motors form a handy board. I have the code running now as a dll under windows. What Im trying to gain from the HB is using interupts, so I can remain in connntact with the control while the steps time out- right now I just (...) (26 years ago, 8-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Serial Communication with HP48 calculator
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(...) not that i am aware of. you could connect to the HB's phone jack as long as you don't have to talk to interactive c and your calc at the same time. see the FAQ serial answer. (...) the SPI is for high speed SYNCHRONOUS comms (data and clock (...) (26 years ago, 7-Sep-98, to lugnet.robotics.handyboard)
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| | Bootstrap download mode
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Hi I have been trying to get the HB into bootstrap mode without much success. Following the instructions in the manual, I held down the STOP button while turning on the HB. The red and green LEDs were supposed to turn on for a short period of time (...) (26 years ago, 5-Sep-98, to lugnet.robotics.handyboard)
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| | Re: [LCD screen]
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Like this: printf("\n"); printf("\n"); That's all there is to it. (...) (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Bootstrap download mode
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see if you can get it to go into download mode when you don't have the phone cable plugged in. if this works, then you have some kind of probl with your serial connection. make sure you have a normal modem cable, and a telephone style RJ11 cable (...) (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | [LCD screen]
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Hello all, I know it's a pretty stupid question, but anyone knows how am i supposed to clear(in Interactive C) the LCD screen of the HandyBoard ? I've tried printf("\n"); printf(" "); but it doesn't work. Thank you very much. Marcelo Manjon (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | Re: Steppr motor pulse problem
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Phillip: In the process I was referring to, you do not use the Handy board, driver or anything to determine the step sequence. You only use the motor and a battery (after you finish with the Ohm meter). The idea is to learn what the motor is (...) (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | expansion board
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Hi, I was wondering how the expansion board is doing? Is out of testing? Any major glitches? Ilya (26 years ago, 4-Sep-98, to lugnet.robotics.handyboard)
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| | HB web servers down
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hi all, we had a filesystem upgrade last night and both of the Handy Board web servers (el.www.etc and lcs.www.etc) are presently down. Hope to have at least one of them running later today. Fred (26 years ago, 2-Sep-98, to lugnet.robotics.handyboard)
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| | HandyBoard for Sale
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If you are thinking about buying one... I have an extra HandyBoard controller board that I assembled and tested. Never used in a project. 68HC811E1 (2K EEPROM) 32K RAM 2 x 16 LCD 9 Digital Inputs 7 Analog Outputs IR Interface Nicad Batteries RS-232 (...) (26 years ago, 30-Aug-98, to lugnet.robotics.handyboard)
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