 | | Re: Over Charging
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Fred, We had the same problem and traced it to the resistor. We can try the ZAP mode, but for future reference we would like to know the value you used to replace the 47 Ohm 1/2 watt resistor. Any chance we could get that information? Thanks, Dan (...) (22 years ago, 11-Sep-02, to lugnet.robotics.handyboard)
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| | Re: Over Charging
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When the batteries are really run down, they can draw too much current through the on-board charging circuit. (I'm assuming you are plugging adapters directly to the HBs, rather than going through the serial interface/phone line charge ckt.) About 6 (...) (22 years ago, 3-Sep-02, to lugnet.robotics.handyboard)
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| | Over Charging
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I have a collection of HandyBoards I'm trying to prepare for class this fall. They're a few years old now and have seem some fairly heavy use. I'm having trouble charging them and am hoping there's a component to replace or something I can fix to (...) (22 years ago, 3-Sep-02, to lugnet.robotics.handyboard)
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| | Re: assembler time delay?
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Tomas, NOP is the easiest way while staying within a single program. If you want to measure long periods of time, you could attach some code to the 2khz interrupt timer (documented in the handyboard manual). Just setup a memory space to use as a (...) (22 years ago, 24-Aug-02, to lugnet.robotics.handyboard)
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| | assembler time delay?
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Hello, Is there any other way, than using NOP repeated times, to create time delays in assembler? Regards, Tomas (22 years ago, 23-Aug-02, to lugnet.robotics.handyboard)
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| | Rob Murray - Lego rotation sensor and sonar.c?
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Hi I am thinking of purchasing a couple of lego angle sensors for odometry purposes. I read in a previous post that some were having problems with these and the sonar.c file. Was this ever resolved? David. (22 years ago, 21-Aug-02, to lugnet.robotics.handyboard)
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| | PS2 mouse software for handyboard
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Almost two years ago I wrote PS2 drivers for the handyboard so I could use two optical mice on my robot. I got it working but its very buggy. The source code is something like 11 pages of assembly but could probably be shortened a bit. Some of the (...) (22 years ago, 21-Aug-02, to lugnet.robotics.handyboard)
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| | I2C
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Hi, I recently got a Daventech SRF08 ultrasonic ranging sensor, thinking it was the same as the SRF04, except with greater range. However it is not even close, instead of the echo and init lines it uses an I2C bus to communicate. So my Question is (...) (22 years ago, 20-Aug-02, to lugnet.robotics.handyboard)
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| | Cricket spoken here?
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Is this newsgroup suitable for Handy Cricket discussion? I guess I mean: 1. Would anyone object? 2. Would anyone listen? --Jack Gregory (22 years ago, 16-Aug-02, to lugnet.robotics.handyboard)
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| | SPI configuration
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How should I configure the SPI (master) in order to communicate with a slave that has a single bi-directional data line? I guess I should tie the MISO and MOSI pins together at the HB. Then what? Should I enable or disable the SPI? Or should I maybe (...) (22 years ago, 26-Jul-02, to lugnet.robotics.handyboard)
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| | Connect the ADNS-2030 optical mouse sensor to the Handy Board
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(...) (22 years ago, 15-Jul-02, to lugnet.robotics.handyboard)
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| | serial wiring problems
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Hi, I’d like to connect a PAK VI PS/2 coprocessor to the Handyboard using its serial port. I’ve taken a RJ-11 telephone cable and cut it into two pieces, so that I’ve got on one side the leads of the cable without the RJ-11 plug which I want to (...) (22 years ago, 23-Jun-02, to lugnet.robotics.handyboard)
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| | New blank Handy board PCB for sale
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HI I have some surplus Handy board (blank) PCB for sale. If you are interested have look at (URL) (22 years ago, 20-Jun-02, to lugnet.robotics.handyboard)
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| | Re: start_process question....
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(...) first off, "proicess_name" should be "process_name", but thats not your problem. You are trying to use an integer as an array in this snippet. You have "int process_priority;" and then try to treat it as an array in "process_priority[pid]=1;" (...) (22 years ago, 13-May-02, to lugnet.robotics.handyboard)
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| | start_process question....
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I am writing a program based mainly on Fred Martin's book. The code is prety close to his program, but when I try to load I keep getting the following error codes, "attempt to use <int> as an array", and, "too many argumentd given to , (...) (22 years ago, 13-May-02, to lugnet.robotics.handyboard)
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| | is it possible to use the lego vision command with the handyboard?
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I'm interested in using the lego vision command with my handyboard. But it seems to use a (usb) port. So is there a way to use a (usb) with the handyboard? And has anyone ever attempted to hack the lego vision command for their handyboard? Also does (...) (22 years ago, 4-May-02, to lugnet.robotics.handyboard)
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| | external power source with expansion board
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Hi, I know this has been asked before, but I was unable to find a deffinitive answer. I cut the trace on my handy board in order to externally power some larger dc motors with two 6 volt gel cell packs wired in series for 12 volts. Unfortunately, (...) (22 years ago, 2-May-02, to lugnet.robotics.handyboard)
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| | Re: Robot Positioning using Beacons
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Would a HandyCricket be good for driving the beacons? "Chris Steiger" <csteiger@comcast.net> wrote in message news:GvGHKu.2wr@lugnet.com... (...) the (...) (22 years ago, 1-May-02, to lugnet.robotics.handyboard)
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| | Re: Robot Positioning using Beacons
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That sounds good, but what do I use to drive each beacon, (e.g. send out the coded IR signal and sonar ping). Using a full blown microcontroller like the handyboard for each one would be incredibly expensive and wasteful. I only need a controller (...) (22 years ago, 1-May-02, to lugnet.robotics.handyboard)
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| | Re: optical mouse as sensor?
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Hi Scott, You should consider taking the mouse appart and hooking up directly to the sensor. Most (all?) optical mice use sensors made by Agilent Technologies (formely part of HP). The early mice used the HDNS2000 sensor which had a PS/2 mode and a (...) (22 years ago, 1-May-02, to lugnet.robotics.handyboard)
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| | Re: Robot Positioning using Beacons
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The problem with IR is that it tends to get everywhere, reflecting off of surfaces etc, so it's hard to triangulate. May I suggest a related but different approach. Make your beacons out of hybrid IR/sonar transmitters. The beacons will periodically (...) (22 years ago, 1-May-02, to lugnet.robotics.handyboard)
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| | Robot Positioning using Beacons
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I am beginning to design a handyboard robot that, for starters, can navigate around a room. The idea is that it will travel to objects whose coordinates within the room are predetermined and interact with them. I plan to do this by triangulating the (...) (22 years ago, 1-May-02, to lugnet.robotics.handyboard)
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| | Re: optical mouse as sensor?
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I believe that some research work in autonomous vacuum cleaners in the late 90's determined that a random walk over the course of a few hours was just as good as a methodical path. I'll see if I can dig up the reference... (...) --- Karl ___...___ (...) (22 years ago, 24-Apr-02, to lugnet.robotics.handyboard)
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| | optical mouse as sensor?
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HI, I am currently working on a handyboard based dust buster bot(goofy, I know) and have been trying to design an algorithm where my vehicle could methodically cover all the area in a given room, starting by following along the perimeter walls and (...) (22 years ago, 24-Apr-02, to lugnet.robotics.handyboard)
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| | IR Transmitter
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Where can I find the proper transmitter for the IR Transmission port on the Handyboard. What must the transmitter's specifications be? (22 years ago, 19-Apr-02, to lugnet.robotics.handyboard)
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| | .lis files
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I am working on a program that will envolve several different files. So I have been trying to figure out how to creat a (.lis), file that could be used to load all the files together; lessing the pain on loading them one, by one. Anyway, I can't (...) (22 years ago, 16-Apr-02, to lugnet.robotics.handyboard)
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| | Re: Overcharged NiCd Batteries?
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Aha, I know nothing about Handyboards, only about NiCads. I don't see why you need a larger power supply to charge slightly larger cells. Your handyboard is probably only drawing about 75 to 100 mAh to charge at 50 mAh, so a bigger power supply (...) (22 years ago, 10-Apr-02, to lugnet.robotics.handyboard)
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| | Re: Overcharged NiCd Batteries?
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I'm sorry, I didn't explain myself well enough. I meant to say that I used the 500mA 12V power supply (block AC to DC transformer) by connecting it to the handyboard. From the specifications, the handyboard is supposed to be able to charge 800mAh (...) (22 years ago, 9-Apr-02, to lugnet.robotics.handyboard)
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| | Re: Overcharged NiCd Batteries?
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Jeremy, You hooked it straight to a 12V power supply? That's kind of a brutal way to charge NiCad's. Who knows what that's going to do. If it's regulated at 500mA, then it should take just a little over two hours to charge a 1000mAh pack, which is a (...) (22 years ago, 9-Apr-02, to lugnet.robotics.handyboard)
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| | Re: Handy board for sale
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For how much are you willing to sale it? _José (22 years ago, 9-Apr-02, to lugnet.robotics.handyboard)
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| | Handy board for sale
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I would like to sell a working handyboard to anyone interested. It works fine I just don't have time to play with it anymore. (22 years ago, 9-Apr-02, to lugnet.robotics.handyboard)
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| | Overcharged NiCd Batteries?
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Overcharged NiCd Batteries? Hello, I recently built a handyboard and bought a set of 8 1000mAh NiCd batteries for it. I charged the batteries using the handyboard and a 12V 500mA DC adapter from radio shack. I only charged the batteries for (...) (22 years ago, 9-Apr-02, to lugnet.robotics.handyboard)
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| | Pcode loading woes (on Mac)
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Dear Handy Board users, I have just assembled a Handy Board from components + PCB, and have verified that the 68HC11 is operating, the memory chip is receiving pulsing on its address / clk lines, and that the Charger / Serial board is working. (...) (22 years ago, 7-Apr-02, to lugnet.robotics.handyboard)
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| | LEGO Remote with IR routines ...
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Hello, I have downloaded and installed Max Davies IR routines in IC 4.010, and have used the test.ic program to try to get data on the LEGO #9738 Infrared Remote. The program seems to read the remote once every ten or so attempts. The data for the (...) (22 years ago, 30-Mar-02, to lugnet.robotics.handyboard)
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| | Servo motor with external power supply
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Hi, I have tried to run a servo motor with an external power supply (4.8v).I have connected the ground lead of the servo to the motor ground port (Motor Power Jack) and the signal lead of the servo to digital 9.(Like descibed in Fred Martin's book: (...) (22 years ago, 28-Mar-02, to lugnet.robotics.handyboard)
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| | USB 1 with Handyboard.
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I am a member of CAD CAM EDM DRO group on Yahoo There is an ongoing dicussion about developing a black box for controlling Hobby CNC machines. Currently machines are controlled by the LPT printer port. This has two disadvantages 1) PC are always (...) (22 years ago, 27-Mar-02, to lugnet.robotics.handyboard)
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| | max 232 ???
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I,m in the begining stages od building my handyboard kit. But I seem to be having trouble with the charger card. It was while doing the testing for the max232 serial ic. At first all the test seemed to do okay. Pin#2 was at 9.6v, pin#6 was at -9.7v. (...) (22 years ago, 27-Mar-02, to lugnet.robotics.handyboard)
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| | Re: IC4.0 and library files
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Sam & Victor, Thanks for the prompt replies. I was led astray by the fact that I got a graphic image when I first opened that file (lib_hb_exp.ic). Once I 'cancelled' the image, the needed file text was there. Once again, thanks to the group. John (...) (22 years ago, 26-Mar-02, to lugnet.robotics.handyboard)
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| | Re: IC4.0 and library files
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Hi John. There's another file that does it... I think it's an .IC file, but not sure. Since I'm at work, I can't check (No IC), but I found it simply by opening up various .IC files in the Handyboard directory. Eventually I came across a file that (...) (22 years ago, 26-Mar-02, to lugnet.robotics.handyboard)
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| | IC4.0 and library files
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I've been experimenting with Interactive C 4.0 and have run into a problem. I am unable to modify the list of files which are downloaded when IC4.0 is initialized. With IC3.2, I simply modify the lib_hb.lis file. With IC4.0, modifying 4.0's (...) (22 years ago, 26-Mar-02, to lugnet.robotics.handyboard)
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