 | | RV: The Spi port is fragile?
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Anyone can help me? I have a ASAP proximity reader connected to the SPI port. I find some 68HC11 never detect signaling coming from Asap to the SPI port. Others work excelent. Except at 2 or 3 months begin working that fail definitively. I replace (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Unix sources for dl for E1
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I have been using various boards (6.270, Handyboards and fingerboards) for a long time and on various platforms (Macintosh mainly). I am willing to use my handyboard from linuxPPC on my macintosh, so i recompiled dl, ic and mon. It works fine with (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | RE: Charging Batteries
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The HB wall plug charger MIGHT do the job, sort of... Generally you need a charger that makes about 15V under load to charge a 12V (nominal) battery pack. Do NOT use an auto battery charger unless you have a way to reliably control the CURRENT to (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Charging Batteries
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No. You need to limit the current going through the nicad when you charge it. Typically it's some relatively small fraction the the current the battery can supply. Car battery chargers can supply a LOT of current. Hooking a small nicad to a car (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Serial communication between HandyBoards
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Hello, everyone: One of my students and I have been trying to get two HandyBoards to talk to each other over their serial ports, but we are having trouble. We first wired a 4-wire modular connector the way the FAQ says to. No smoke -- a good sign. (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Great Battery Opportunity!? & External Motor Power Question.
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Hi all, I just got my Tech America catalog in the mail (1-800-877-0072). On the back cover they have this 'portable power' thing which just might be able to be used for a robotics application...for only $30!!! Here's the specs: 8 Amp Hour sealed (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | Charging Batteries
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Hi all, Just a quick question on charging different types of batteries. I have got a 6Amp 12Volt Nicad battery out of a security alarm panel, can i charge this using a normal lead acid charger that normally charges car batteries, If not what is the (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | RE: IR output connection
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The GPIU58X is not an IR proximity switch but the hack provides an analogue level relating to the intensity of the received signal. Novasoft also sell the IR receivers (it's where I got mine from and I'm based in the UK). The address of Novasoft is (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | RE: IR output connection
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Hi John, Just read your message about IR ranging. Do you have a site address as I can't seem to find the site using a web search, also what is the usual working range for standard IR collision detection as I have been looking through some catalogs (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | RE: IR output connection
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Using a 'hacked' GPIU58X (see Novasoft website for acrobat file describing changes required) you can get an analogue reading relating to the distance from an object. The transmitting LED has to be modulated at the correct frequency and should be (...) (26 years ago, 10-Nov-98, to lugnet.robotics.handyboard)
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| | IR output connection
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Hi All: With a lot of help from you all , I am finally able to send out a modulated signal from one HB which the other can recognize. :) Now I am trying out obstacle avoidance using the IR. I tried to use the standard ir_detect() function with the (...) (26 years ago, 9-Nov-98, to lugnet.robotics.handyboard)
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| | Machine vision -Reply
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(...) Has anybody had any experience interfacing machine vision systems to a robot controlled by a handyboard? The German company Joker Robotics does something using a QuickCam style camera interfacing an HC11 board robot. I think they use the (...) (26 years ago, 9-Nov-98, to lugnet.robotics.handyboard)
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| | Teaching IC
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Does anybody know of a emulater for IC that can be used to teach IC without having the board connected? ___...___ Ian Roberts Mechanical & Manufacturing Engineering Swinburne University of Technology Hawthorn, Vic 3122, Australia. phone (61)(3) (...) (26 years ago, 9-Nov-98, to lugnet.robotics.handyboard)
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| | Machine vision
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Has anybody had any experience interfacing machine vision systems to a robot controlled by a handyboard? (...) (26 years ago, 9-Nov-98, to lugnet.robotics.handyboard)
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| | The Spi port is fragile?
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I have a ASAP proximity reader connected to the SPI port. I find some 68HC11 never detect signaling coming from Asap to the SPI port. Others work excelent. Except at 2 or 3 months begin working that fail definitively. I replace the 6811 but nothing (...) (26 years ago, 8-Nov-98, to lugnet.robotics.handyboard)
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| | Lasers
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Hi: Has anyone ever worked with laser beams and making handyboards recognise them? I think the wavelength is around 600 nm but I haven't been able to come up with a sensor which could recogonise the laser signal alone and no other signal. Rajbala (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Science Interest
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(...) This idea sounds very interesting, but I see 2 problems... First, a GPS reciever doesn't actually contain a compass, so it cannot correctly point you to another location while you are standing still. To determine what direction its facing, a (...) (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | RE: Some Parts
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Drew, I just got through finding all of the stuff during the last 2 weeks: B.G. Micro has the 68HC11 and the 32K static (great prices, too). Newark has the Dallas Semi voltage monitor and the TI motor drivers ($20 minimum order). One other option (...) (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Science Interest
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Robbie Berg and Capt. Jack Rutledge: I'm a big fan of the Handy Board, but you might want to also consider using a 3Com PalmPilot. The current model, Palm III, has a backlit 160x160 graphics display, a 2MByte memory, and while I haven't used it, (...) (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Some Parts
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Drew, Last year I was involved in getting parts for the Missouri Area Robotics Society. We were making boards as a club project. I found most of the parts from Digi-key and Mouser Electronics. The rest came from: Wirz Electronics, JDR Micro devices, (...) (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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