 | | using the MC34064 LVI
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Hello, This is a warning for anyone considering using the Motorola MC34064 to replace the DS1233. I have just built a couple handyboards and I had some problems getting them working. I finally tracked the problem done to the LVI. I used the MC34064 (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Measuring PW
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Has anyone been able to successfully use Thomas Hauri's PW measuring routines?? For some reason whenever I try to load them they crash my IC. Any thoughts?? Joshua Stark j-stark@uiuc.edu Aspiring Computer Engineering Major (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | L293D
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where does the pwm go? ...the "cs" or the "in" pins? ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Speech Synthesizers
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I am wanting to add speech to the Handy Board. I am currently looking at interfacing a SPO256-AL2 speech synthesizer chip and have a very limited schematic that came with the chip many years ago. Does anyone have a nice set of schematics for doing (...) (27 years ago, 16-Feb-98, to lugnet.robotics.handyboard)
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| | Infrared port on the HB is not working: need help!
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hello! I pulled out my HB today and rtied playing around with the IR port. it does not work for some reasons. I checked the remotes: they are still transmitting! Here are the steps I took: am I missing a step? 1. loaded sony-ir.icb 2. sony_init(1); (...) (27 years ago, 15-Feb-98, to lugnet.robotics.handyboard)
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| | pa7 9600 serial output
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Hi, I'm trying to interface the FerretTronics Servo Controller Chip FT639, to the handyboard using PA7. How can i modify the pa7_9600.asm file to transmit at 2400 baud? thanks, phet (27 years ago, 15-Feb-98, to lugnet.robotics.handyboard)
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| | Re: 68HC11 modes
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The handyboard has to stay in special test mode so that it can switch into and out of 'single chip' mode at will. This is necessary to operate the LCD (which uses either a clever or gross hack depending on your taste). If you are writing code using (...) (27 years ago, 14-Feb-98, to lugnet.robotics.handyboard)
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| | RE: encoders
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(...) In my experience, it doesn't matter how slow the pulse is. The count is increased each time the analog port value crosses outside of the middle range defined by the two threshold values as shown below (please note that you'll need to view this (...) (27 years ago, 14-Feb-98, to lugnet.robotics.handyboard)
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| | RE: encoders
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-----Original Message----- From: Will Bain [SMTP:willbain@cs.umt.edu] Sent: Saturday, 14 February 1998 12:50 To: handyboard@media.mit.edu Subject: Re: encoders (...) trouble.When I try to load the file fencoder0.icb I get a message that ic cannot (...) (27 years ago, 14-Feb-98, to lugnet.robotics.handyboard)
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| | Re: encoders
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(...) trouble.When I try to load the file fencoder0.icb I get a message that ic cannot find the file.Any hints? (...) pulse or what dictates how the count is incremented. I think the file is named fencdr0.icb by default (not fencoder.icb). Maybe (...) (27 years ago, 14-Feb-98, to lugnet.robotics.handyboard)
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| | public apology
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Yes -- I didn't think very hard and in retrospect it's fairly evident that Jan-Sipke's code is just the starting step. Sorry for being such a blunderhead. (Jan-Sipke and I have been exchanging some private messages and I think he's closing in on a (...) (27 years ago, 14-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Sonar
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If the diodes are getting hot, it does indicate a short. Fred In your message you said: (...) (27 years ago, 14-Feb-98, to lugnet.robotics.handyboard)
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| | Re: 9v lego motors
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Everyone is complaining about the price of LEGO motors. There is a new product, a gear reduction motor, that is a great value. It is a super efficient DC motor with a built in gearbox that can be used for direct drive, or with one stage of gear (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Interrupt for serial data
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(...) Sipke obviously realizes that more work is needed, and justs want to get to step 1 first by recognizing the interrupt. That is exactly what I would do too. I've been thinking about writing an interrupt-driven serial receive routine too, but (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Interrupt for serial data
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Jan-Sipke, You're really pretty far away from having this work. It's not just a matter of redirecting the serial interrupt; when you get there, you have to: * store incoming character in a buffer * advance the buffer pointer * check the buffer for (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Re: 'uploading' data?
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(...) Yes, this is very possible, and I've done a fair amount of work for various experiments where I needed to get data back from the board. First, you should check out (URL) the routines that the 6.270 and Handy Board that let you disable the (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Lego 9V motors work well?
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In article <v03007807b10a2f11bb...4.217.7]>, Greg Starr <starr@unm.edu> writes (...) I've used lego motors and have found them much better than other motors i have tried for torque. The ease of integrating them into lego buggies is obviously a major (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Sonar
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In article <v03020900b10948ab85...2.4.189]>, Michael S. Reiling <macman@inreach.com> writes (...) Did you remember to solder the C7 capacitor in? ___ IAN | |__ _______ ______ ___ ______ ___ ___ | _ \| _ | ___| | | _____|\ \/ / | |_ ) | _ | |_--- (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Lego 9V motors work well?
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Hi Greg, I have been using LEGO 9v motors for a few years and I am very pleased with the results. I run freshman and sophomore engineering design and computer science courses using LEGO kits and HB's. The motors are well worth the price if you are (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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| | Re: Lego 9V motors work well?
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LEGO motors work great. Fred (...) (27 years ago, 13-Feb-98, to lugnet.robotics.handyboard)
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