 | | 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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| | Re: To step or not to step
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Russell , Having that encoder will help you a lot. One of the biggest problems with using steppers is that they will stall when you get to higher speeds. What ever program you use to drive the steppers should have a part that asks "has it made the (...) (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Science Interest
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Although not sure, I think that a wearable could perform better then a palm pilot for the firefighting task. Here are some pointers: [Georgia Tech] (URL) Lab] (4 URLs) [UoToronto] (URL) it helps, Ozan (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Follow-up on DS1233 problem
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Hello, all: Just following-up on yesterday's message about the HB resetting during the initial download. Removing the DS1233 and replacing it with a reset switch produces a working configuration. There was also one stuck digital input, but swapping (...) (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: nicad battery
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It might take a bit longer to charge but I don't see a problem I actually use a 12V 3AH gell cell to power my robot and Handy Board -----Original Message----- From: Pat Benoy <benoy@SLU.EDU> To: handyboard@media.mit.edu <handyboard@media.mit.edu> (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Re: To step or not to step
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I encountered the same problem with the DC motors I use on my robot. I used a reflective type encoder that read a black and white stripe of the driving wheels, but did not work reliably due to lack of resoulution and interference from ambient light. (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Re: nicad battery
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(...) I'm sure that would be fine. The important things seem to be the 9.6 volts and the relatively high current capacity that nicads provide. The larger the amp-hour rating, the longer you can go before recharging. -- Will , , __@_/ \_@__ |/ | /__, (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Some Parts
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I read somewhere that someone was selling the "hard to find parts" of the HB including the DS1233, HC11, motor controllers and an LCD. I can't find it now... does anyone know of such a thing??? It would help. P.S. - to anyone who is considering (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Science Interest
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Dear Capt. Rutledge, Your ideas sound very interesting! May I suggest that you join the following mailing list. It's a hotbed for this sort of discussion: (URL)Dear Professor Berg, (...) ***...*** Robbie Berg Department of Physics, Wellesley College (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | nicad battery
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Is it ok to use a 9.6 volt 700 mAh RadioShack batttery instead of the 500 mAh battery specifed in the instructions?? (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | To step or not to step
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Hi all, Iam trying to make up my mind on which type of motor to use on my robot, I have got two stepper motors with built in quadriture encoders and also two 12v 2amp D.C. motors with gearbox's. I have made a test bot built from Lego with two 9Volt (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | smooth motor output
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(...) My IC 3.2's do not include the smooth PWM but the code from the handyboard web site works OK. I say "my IC3.2" because although the disc says 3.2 the handyboard says 3.1. Does anybody know if the bug fix concerning the analog inputs on the web (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | DS1233 Problem?
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Hello, all: I am having problems downloading the pcode_hb.s19 file. Here's the symptoms... My HB passed all of the construction tests as outlined in the manual, including the DS1233 power monitor. The HB goes into bootstrap mode no problem, but the (...) (26 years ago, 5-Nov-98, to lugnet.robotics.handyboard)
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| | Flow Control
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Hi, Does the Handy Board use flow control? Thanks. Cheers, Ron (26 years ago, 5-Nov-98, to lugnet.robotics.handyboard)
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| | message from france
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Hello, my name is thierry and I am student in a high school of engineers in toulouse in France. I send you this mail because I have a problem to download a program to board with 68hc11a1fn. In France, I bought a book of joseph l.jones and anita (...) (26 years ago, 5-Nov-98, to lugnet.robotics.handyboard)
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| | Digital Output
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Hi, I am having problems with one of the converted SPI pins, specifically the MOSI pin. This is what I did, poke (1009, 0x3c); bit_set (1008, 0x08); I then checked the pin with a logic probe and got a low. I sifted through the other pins and they (...) (26 years ago, 4-Nov-98, to lugnet.robotics.handyboard)
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| | message from france
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Hello, my name is thierry and I am student in a high school of engineers in toulouse in France. I send you this mail because I have a problem to download a program to board with 68hc11a1fn. In France, I bought a book of joseph l.jones and anita (...) (26 years ago, 4-Nov-98, to lugnet.robotics.handyboard)
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| | message de france
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Hello, my name is thierry and I am student in a high school of engineers in toulouse in France. I send you this mail because I have a problem to download a program to board with 68hc11a1fn. In France, I bought a book of joseph l.jones and anita (...) (26 years ago, 4-Nov-98, to lugnet.robotics.handyboard)
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| | RE: AS11_IC
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From: Hector Noriega Date: 3OCT98 to: makarraj@cse.msu.edu To Integrate Assembly Code into a "C" Program The variables declared here become globals in C. A simple example to double a number entered from a "C" program, multiply it in assembly code, (...) (26 years ago, 4-Nov-98, to lugnet.robotics.handyboard)
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| | adc blues
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im working on a project for school, a digital oscilloscope for your pc, but im running into some trouble concerning the ADC part of the project, specially with the noise introduced by the ADC itself to the signal being digitized, (im using a Harris (...) (26 years ago, 3-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Using sonar to approximate RADAR?
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Richard A. Cini, Jr. wrote: <snip> (...) That ought to work fine, provided the cop is almost directly in front of or behind the "perp"; then no correction for angle is necessary. The Polaroid sonar detects objects within about a 10-degree cone. It (...) (26 years ago, 3-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Cool robot platform and a question...
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Clem, In a message dated 98-11-03 01:04:33 EST, you write: << I started probing around for continuity to try and figure out what's what and I didn't get very far. >> This is the right place to start. If you can see the circuit traces, copy them to a (...) (26 years ago, 3-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Line follower kit
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Hi Dave, I have a line tracker kit and also the IRPD infrared proximity detector kits from Lynxmotion constructed but do not know how to connect them to the handyboard. I contacted Jim Frye with Lynxmotion but he said he was not familiar with the (...) (26 years ago, 3-Nov-98, to lugnet.robotics.handyboard)
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| | Cool robot platform and a question...
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Thanks to the help of Todd Graham (thanks Todd), I've found a really cool, low cost, RC robot platform. It's the same platform used by USC's 1997 RoboCup entry, the Nikko Hercules! It has 4 hard plastic drive wheels, dual drive motors, differential (...) (26 years ago, 3-Nov-98, to lugnet.robotics.handyboard)
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| | Using sonar to approximate RADAR?
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Hello, all: <DELURK> I've been following this list for some time now, but since I didn't have an HB, I didn't contribute to the discussion. Now, I've just ordered my HB because I plan to start building. But I have a question... I have a model police (...) (26 years ago, 3-Nov-98, to lugnet.robotics.handyboard)
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| | robot navigation.
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Hi all, My robot has come to the stage where its time to start writing the basic navigation routines. I have two encoders on each rear drive wheel and two caster type wheels on the front.I have been trying to put some basic software modules together (...) (26 years ago, 2-Nov-98, to lugnet.robotics.handyboard)
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