 | | 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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