 | | TI-92
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Have anybody link a TI-92 (Texas Instruments Calculator). Because I fail on my first try. And only got a cero value form the TI-92. Any Help? Thanks Daniel R (24 years ago, 11-Sep-00, to lugnet.robotics.handyboard)
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| | IR Reception
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I posted this question previously but got no reply so I am trying again. I have mounted the IS1U60 infrared demodulator on to the HB but I have realised that it can only recieve from a particular direction. Is it possible to mount another IS1U60 by (...) (24 years ago, 11-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Encoders
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IC can't sample the A/D converters that quickly. As long as you're generating a nice squarewave you could connect it to one of the input capture pins and write a custom interrupt routine to maintain the count. --Chuck (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Encoders
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Since some are on the subject of encoders, I have a problem I would like to get help on. I have a hall effect sensor dutifully counting pulses on a gear. The gear will rotate from 800-4000 RPM. I am running the signal through a 741 OP Amp to (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Encoders, what are you using?
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Jerry, go to: EE 401 - Electrical Engineering Design Course - 1999/2000 then to shaft encoders they have 16, 32, or 64 sections you can print out. bye, Terry G. ----- Original Message ----- From: "Jerry Normandin" <jerrynormandin@ne.m...iaone.net> (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | I fixed my slop!
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Hey.. I added a quick reverse drive to the moter.. it turns out my slop was the drive system coasting! I added brake and I am more accurate now!!!!!!! (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Encoders, what are you using?
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Hi, My homebrew quad hall effect encoder works, I'm learning from it. I get @ 1/4" resolution so there's plenty of slop. I can have the robot pace back and forth on a straight track for 6 passes or so then I start to veer off track. So I guess it's (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Robot Program for Rover so far...
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Hi everyone. Well I decided to go with a Quad Hall Effect encoder. I mounted 4 very small magnets on my 1" plastic drive gears and used the Hall Effect switch that Fred recommended. Here's the code I have and the results! For a 180 degree turn I get (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Sensor supply voltage & PC communication
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hi. you can certainly tap the 9.6v batt output to power the sensor (use J13), but make *sure* that the sensor does not put out more than 5v, or you'll blow your analog inputs. if you're not sure, put a 1K resistor in series with the sensor's output (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | External Motor Power
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I have read the FAQ on cutting the trace that supplies motor power from the Handyboard battery so you can use another power source but it doesn't address the issue of what to do if you have an expansion board. I am sure someone must have done this (...) (24 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
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| | Sensor supply voltage & PC communication
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Hi Everyone, I want to use a photoelectric sensor with my handy-board. The sensor require a 10 V supply voltage, while the digital inputs of the HB only supply 5 V. Can I simply use one of the motor outputs to supply the sensor, and plug the signal (...) (24 years ago, 8-Sep-00, to lugnet.robotics.handyboard)
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| | Newton Labs posted the pcode31 source back up!!!...!!!
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Hi everyone! I guess it pays to be polite and explain why you need something! Well Newton Labs posted the pcode source back on the web server. If anyone owns an Interactive C 3.1 license and you want to work with the pcode source, it can be found (...) (24 years ago, 8-Sep-00, to lugnet.robotics.handyboard)
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| | The Pcode Source -> working on an agreement with Newton Labs
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Hi Everyone. I am working on aquiring the source to pcode_hb.asm. I pointed them to the newsgroup posting that has Randy Seargent himself directing someone to download the pcode source from newton labs. I also informed him that if I am going to (...) (24 years ago, 7-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Newton Labs Not releasing PCODE source for 3.1
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That's why I Love OPEN SOURCE and the Linux Movement! OK, then I want to RETURN MY LICENSE and move on. (...) (24 years ago, 6-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Newton Labs Not releasing PCODE source for 3.1 -> Fred Help!
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Whew. I have encountered the same problem back when I wanted the improved PWM code in the new version of IC. Back then (about 2 years ago) I managed to find someone who actually had a copy of the 3.1 pcode. Don't ask me for it, I lost it long ago. (...) (24 years ago, 6-Sep-00, to lugnet.robotics.handyboard)
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| | RE: Newton Labs Not releasing PCODE source for 3.1
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Jerry- You didn't 'buy' IC 3.1. You paid for a license to use the software. I doubt that you were buying the actual source code, which probably took hundreds of hours for the programmers to write. That is their intellectual property, and it is their (...) (24 years ago, 6-Sep-00, to lugnet.robotics.handyboard)
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| | Any SPI bus gurus out there?
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Hi, I have a question. Does the sonar implementation that's suggested prohibit you from adding additional devices to the SPI bus? I know you can add as many SPI devices as you have enable lines. I'd like to add sonar, compass, and RTC / battery (...) (24 years ago, 6-Sep-00, to lugnet.robotics.handyboard)
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| | Newton Labs Not releasing PCODE source for 3.1 -> Fred Help!
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George Musser brought up a very good issue! Where the heck is pcode_hb.asm? This code was released in ver 2.86 and enhancements were made to the pcode from the user base. Newton Labs has tunnel vision and NO CLUE to how open source software can (...) (24 years ago, 6-Sep-00, to lugnet.robotics.handyboard)
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| | Pcode source code; disabling the LCD
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Hi all, Does anyone have a copy of the pcode source for IC 3.1? According to an earlier posting, it used to be available on the Newton Labs FTP site, but it's not there anymore. Also, has anyone ever completely disabled their LCD? Even after the (...) (24 years ago, 4-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Here's the Rover with handyboard
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Hello Jerry, Did not get the picture of the Mars Rover. Sounds like you have a good start on your robot, please keep us advised on the problems and solutions. Was it hard to convert the mice encoders?? should be very accurate, please post the (...) (24 years ago, 4-Sep-00, to lugnet.robotics.handyboard)
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