 | | Any web resources for Devantech SRF04 UltraSonic Ranger?
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Can anyone provide some information and applications of the Devantech SRF04 UltraSonic Ranger for me? I am interested to use this sensor on my robot since it has a minimum 3cm ranging distance. (URL) (23 years ago, 12-Jul-01, to lugnet.robotics.handyboard)
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| | Handy Board For Sale!
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I am selling my Gleason Research HB, it was only used for my design project. Total time of use would be about three months weeks. Comes with all the cables, charger/interface box, charger power supply, and Fully licensed Interactive C. I am the only (...) (23 years ago, 12-Jul-01, to lugnet.robotics.handyboard)
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| | Re: Power and Reset
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Nichola's suggestion is a simple and raw method to supply enough current for the motors, but it seems difficult to imply if your handyboard has an expansion board attached... The height between the two boards is not enough to fit 2 ICs, and this (...) (23 years ago, 11-Jul-01, to lugnet.robotics.handyboard)
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| | Re: Power and Reset
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I think your trouble come from the H-bridge chip (L293D), it doesn't support more than 600mA of current draw, and reset or crash the board then this value isn't respected. To solve this trouble, I used instead the L298N, it support up to 1A. In (...) (23 years ago, 9-Jul-01, to lugnet.robotics.handyboard)
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| | Power and Reset
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Hi All, I Just created a (my first) mobile bot with two motors using differential drive. At random moments, during motor activity, one of the motors (or both) seems to go wild and soon after that the BATT led blinks and then the board is reset. I (...) (23 years ago, 8-Jul-01, to lugnet.robotics.handyboard)
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| | Re: my Polaroid
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Please get the Handy Board Technical Reference at (URL) . Then look on page 2. It's the item labeled #19, power expansion header. sorry for the inconsistent naming. Fred (...) (23 years ago, 6-Jul-01, to lugnet.robotics.handyboard)
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| | my Polaroid
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hello people :) I have refered to this site regarding my Polaroid's (ranging system) interface of the H.B, (URL) what I do not understand is the phrase..." To Handy Board Motor Power Connection" on the schematic...where do they mean by that?! by the (...) (23 years ago, 6-Jul-01, to lugnet.robotics.handyboard)
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| | Java and the HandyBoards
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Hello. I am trying to get java to work on the handyboards using the things provided from the simpleRTJ webpage. If anyone has had success getting java to work on the handyboards, either the regular or the expansion boards, using simpleRTJ, please (...) (23 years ago, 3-Jul-01, to lugnet.robotics.handyboard)
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| | Re: SOS: How can I get my robot moving straight?
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Hi Zhengrong, I think it is possible. Your Handyboard has to give a pwm signal to your gyroscope. The gyroscope lengthens or shortens this pwm and gives it back to the Handyboard. I haven’t ever seen drivers for a gyroscope, so you’ll have to write (...) (23 years ago, 3-Jul-01, to lugnet.robotics.handyboard)
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| | Re: SOS: How can I get my robot moving straight?
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I am also designing a similar car or truck, my idea is use a rotation sensor and worm gear to rack and pinion, then control it keeping straight base on rotation value, is it possible? Zhengrong (...) (23 years ago, 29-Jun-01, to lugnet.robotics.handyboard)
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| | SOS: How can I get my robot moving straight?
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Hi, I’m trying to get my robot moving straight, but it doesn’t work. My robot is configured for differential steering and I have shaft encoders installed on each one for feedback. The encoders are working with the encoder library from the Handy (...) (23 years ago, 28-Jun-01, to lugnet.robotics.handyboard)
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| | java and the handyboards
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I am a student doing a summer research project for my school that is focused on using java on the handyboards. I have been using the things from the simple real time java page, and am having three problems. Any help would be utterly appreciated. The (...) (23 years ago, 21-Jun-01, to lugnet.robotics.handyboard)
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| | DC motors and expansion board
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How many 9v DC motors can I attach to the handyboard with the expansion board? Where should I attach them to the expansion board and how do I code for them in IC? Thanks, Elliot Anderson Assistant Professor of Art, Electronic Media Art Department (...) (23 years ago, 20-Jun-01, to lugnet.robotics.handyboard)
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| | my Polaroid again!
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I have checked this link regarding the interface of the Polaroid ranging system to the HB. (URL) I don’t get is the term “To Handy Board Motor Power Connector” on the connection schematic…what is actually meant by that; is it to the four motors (...) (23 years ago, 18-Jun-01, to lugnet.robotics.handyboard)
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| | E-mail authentication during posting
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The Quick Summary ===...=== Effectively immediately, all LUGNET News posts now require e-mail authentication after posting, in order to prevent the continuance of forged messages. An exception to this rule is if you are a member and signed-in (...) (23 years ago, 18-Jun-01, to lugnet.announce, lugnet.admin.nntp, lugnet.general, lugnet.lego.direct, lugnet.robotics, lugnet.robotics.handyboard, lugnet.cad) !!
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| | Re: How many 5 wire steppers?
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Hello, From the book "Mobile Robots -- Inspiration to implementation", there is a circuit that used to sample the noise level from the mic. It also comes with Interactive-C source code. I guess this is what you are looking for. Thanks. Patrick Hui (...) (23 years ago, 14-Jun-01, to lugnet.robotics.handyboard)
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| | Phasing Errors and as11
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Has anyone managed to sort out all the "phasing errors" you get when you try to reassemble pcode v3.1 using as11? Thanks, George Musser georgejr@musser.com (23 years ago, 13-Jun-01, to lugnet.robotics.handyboard)
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| | How many 5 wire steppers?
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I have a Handyboard with the expansion board. I'm building an interactive sculpture with the board. This is my first use of my Handyboard. I would like to hook up five or six stepper motors to the board. The motors I'm using are scrapped from old (...) (23 years ago, 13-Jun-01, to lugnet.robotics.handyboard)
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| | Re: Beginners Quest.
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The E1 chip works with the Handy Board. Actually, any of the 52-pin PLCC 6811s will work. You may have to change the CONFIG register to get Interactive C to run. Fred (...) (23 years ago, 13-Jun-01, to lugnet.robotics.handyboard)
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| | Pyro sensor
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Hi! Does anyone has implemented a person following behavior? If so I would appreciate any hardware or software details. If I'm not wrong, I can modify one of those PIR detectors used with burglar alarms as it has the sensing element and amplifiers (...) (23 years ago, 13-Jun-01, to lugnet.robotics.handyboard)
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