 | | RE: IR outputB
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I heard that radio waves do not need "line-of-sight" like IR does. Can someone with more exerience verify or dispute this? It makes sense since longer wavelengths of EMR can bounce off surfaces easier. So maybe your Lynx device is better. ---...--- (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | RE: IR outputB
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So, it seems like the short answer to this question is no one knows what to attach to correctly and safely (to prevent HB damage) allow IR transmissions from the HB :) I understand the receiving capabilities, as they are documented and have routines (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Another IC error: "Out of memory"
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Hi everyone: I went back and rethought this: (...) I played around it it some more, removed the 'scamper' gait, and got the size of code IC loads down to 12500 bytes, and the error is gone. I'm not sure if this means I have some 3k of variables, or (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | Another IC error: "Out of memory"
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Thanks again for all the help with the "yacc" error I experienced before. I'm having new code resourcing problems now: mainly a problem with my 1994 version 2.851 interactive c. It loads my libraries, and I'm getting an error: "Out of memory (tried (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | RE: IR outputB
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(...) It is not the bouncing off of things but the passing through them that makes RF able to operate without line of sight. Line of sight gives greater distances, though, even with RF. The Lynx Tx/RX will definately have a greater range than the (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | Re: How to measure the signal Voltage ?
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not knowing anything about the sensor, but guessing (hoping) that it behaves like an open collector gate, this is what i would do--fool with the sensor on the bench to determine how it works before i let it near the HB. 1. power up the sensor, (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Print to LCD
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I certainly do! Spent a lot of effort working developing a machine code interface for the Handyboard. One of the biggest hurdles was getting messages to the LCD display. If you look on the Handyboard home page, in the contributed section: (URL) will (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Parts availability
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(...) I was able to follow the parts list and get most of the things from the suggested supplier. (...) (eqivalent?) (...) I thought that I got the memory from Jameco, but I think BG-Micro sells it was well. I would also think they both might carry (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: IR outputB
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Is the IR reciever on the HB the same thing as in the robot in MR:ITI book? I though it would be different. In any case, you can but...the reciever is more effective as a "wireless communication" device that can recieve various IR codes which you (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: IR outputB
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(...) o Hi Did anyone receive an answer to this. I ant to connect a Radio Shack (276-143) IR LED to the IR output and am wondering what resistance to use. Also, I saw a design in Mobile Robots..Inspirition where they use two IR LED (one on each (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Parts availability
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To all: I am constructing the Handy Board from 'scratch', since many places want upwards of $200 for a built (and tested) board. I have located most of the required parts, but have not located the following: the 1 uH iron core inductor the 5W 47ohm (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | How to measure the signal Voltage ?
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Hi Everybody, I am using the retroreflective sensor to an object . The sensor is came from Masushita NAIS brand name. It has 3 wires . ONe for the +ve supply , one for the -ve supply, one for the output signal line. The sensor is using a NPN type. (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Print to LCD
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Hi everyone, Does anyone know how to print messages to the LCD in assembly language. Thanks (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | RE: External Motor Power and the Expansion board.
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I noticed this to when I built mine, I just bridged the gap I had cut with solder and now use an H-bridge to control the motors. Clancy (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Problem resolved?
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To all, Regarding my previous... I am not sure if it was a soldering connection, but after retesting the output voltages it is very close.. Fred says that the voltages should be between, say, +9 and +10, but I'll get a 8.7.. Is this good enough? If (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | MAX232 Chip
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To all: I am constructing my first Handy board. I am currently building the interface board, but have hit a small 'snag'. While performing 'step 2', installing capacitors and MAX232, and then testing, I did not recieve the correct voltage outputs. (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: External Motor Power and the Expansion board.
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ahah, good question. the exp bd grabs the 9v motor power for the servos, sonar, and 9v lego sensors. if you're not using any of these, you could leave connector off the exp bd and you'll have no probs. if these are important, you need to reconnect (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | External Motor Power and the Expansion board.
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Greetings all! I just got the kit for the expansion board in the mail, and I realized something: I modified my handy board to accept external power for the motors through the power expansion header, using the instructions at: (URL) and now I don't (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: electronics question please help
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The modulation frequency of the IR diodes must match the sensor (depending on exact part number, around 38 KHz) within +/- 3 KHz. As you move away from the center frequency, detection drops off sharply. Are you able to confirm the modulation (...) (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
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| | ICC11v5 - interrupts
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I have a HB (running under IC3.2) that is linked to a 'slave' TCOMP board (68HC11E1, 32k ram) which is programmed using ICC11v5. I need a function similar to 'msleep' on the TCOMP unit. I am trying to use portions of Chuck McManis' HB library for (...) (26 years ago, 23-Feb-99, to lugnet.robotics.handyboard)
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