 | | Re: dc motor output control? Please help!
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the short answer is that you can't use 3v motors with the handy board. the FAQ states this: (URL) you use the "separate motor power supply" hack, with a 6v battery, you might be able to get 3v motors to work. see (URL) your message you said: (...) (26 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | CHARGER BOARD PROBLEM(URGENT)
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hI FRed, anothony and others, I just plug in the RJ11 in the HD and charger board. It supposed that the red LED on the charger board should light up. It failed to light up. When I plug in the adaptor onto the charger board, the red LED light up but (...) (26 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | Merry Christmas!
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Merry christmas! Megan See you real soon, you rock my world! Justin thanks for the many rides to camp Erv Shine on you crazy diamond! Joel be careful! See you soon. Jeremy Don't work too hard, *laugh* Jacob See ya soon, take care. All my A-Rocket (...) (26 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | dc motor output control? Please help!
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hi everyone, i need some help on controling the output voltage of the dc motor ports. the o/p of the motor port is 12V. but my motor required voltage is only 3V. i like to know if there is any way to clamp down the voltage to 5V or lesser. i try (...) (26 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | servo motor
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Hello again, I am using a Tower Hobbies System 3000 servo motor on my expansion board. Does anyone know if the black, red, and white wire match up with ground, 5 volts, and control respectively for that particular brand of servo motor? Scott Sherman (...) (26 years ago, 24-Dec-98, to lugnet.robotics.handyboard)
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| | Source of Handyboard in UK?
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I have a small quantity of handyboard pcb's available for 16GBP the set, handyboard plus charger including the hard to find ZTX darlington. Post paid in UK, Visa and Mastercard accepted. This is a limited offer, once they are gone I will not be (...) (26 years ago, 24-Dec-98, to lugnet.robotics.handyboard)
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| | Happy Holidays
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Happy Holidays For All !!! (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | RE: expansion board - servo control
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I've had a similar problem, make sure your servo power is fully charged. An undercharged system will sometimes drive all the way one way. Mike Ross ---...--- From: shsc9801@condor.stcl...state.edu] Sent: Wednesday, December 23, 1998 8:04 AM To: (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | serial ports question
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hi, can i have 2 sets of serial communications at the same time with the handyboard? i have 1 set that is between the handyboard and the SSC via pa7. i want to have another channel, pc serial application to handyboard, in that one direction only, (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | RE: encoder and motor questions
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I am doing something very similar, but instead I am trying to follow a black line on a white background. Either way, I am using IR detectors and emitters. They are readily available and work very well. I'm sorry I have never used an encoder to know (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | Re: expansion board - servo control
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hard to tell what is wrong. do you have a scope so that you can view the servo control signal. fred In your message you said: (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | encoder and motor questions
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dear viewers here are some questions i need to ask: 1) my DC motor comes with a 10 pin optical encoder(supply current-10mA) pin 1- GND pin 2- Vcc pin 3- dir pin 4-standyby pin 5 and 6 - A1 and A2 pin 7 &8 - B1 and B2 pin 9 and 10 - Z1 and Z2 how do (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | expansion board - servo control
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Hello, I emailed this to the handy board list and got one response. I am mailing it back hoping that I can get some more responses from those on the list and perhaps fred. (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | charger board problem ( URGENT)
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hI Anthony and others, I just plug in the RJ11 in the HD and charger board. It supposed that the red LED on the charger board should light up. It failed to light up. When I plug in the adaptor onto the charger board, the red LED light up but NOT the (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | RE: expansion board - servo control
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I also saw a similar problem while experimenting with an Atmel microcontroller and a Futuba servo. My problem ended up being that I had forgotten to have a common ground between the controller and the servo. Once I connected the grounds everything (...) (26 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | new 6811 Downloader for PowerMac G3's!
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Hi everyone, I've built a new version of a 6811 Downloader application for Mac that works fine with PowerMac G3's. (It also works with older Macs.) You can download it from the Handy Board home page: (URL) (26 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control
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How about lifting pint 8 of the L293 chip and running a wire from it to a 7805 regulator (not the one used for logic). You could also run the wire to a separate battery pack. 4 NiCds in series gets you real close to 5V with no regulator. In motor (...) (26 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control
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On my first robot, I just took a resistor in-line and used that. It got very hot, though, and didn't work evenly (some of them must have started to burn out before the others did....) (26 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | Re: I need a poloroid sonar board pinout.
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Wayne Try this link. (URL) It shows modifications for interfacing the one step board to a microcontroller. I also have an old one step ($1 at a garage sale) but I have not tried the modifications shown for use with the handyboard. I have taken the (...) (26 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | RE: expansion board - servo control
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-----Original Message----- From: shsc9801@condor.stcl...dstate.edu [mailto:shsc9801@con...state.edu] Sent: Monday, December 21, 1998 1:39 PM To: handyboard@media.mit.edu Subject: expansion board - servo control Hi, I stopped working with the (...) (26 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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