 | | Re[2]: IR concept
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Chuck, I love the wire whisker! Have you got any more tricks and tips I could steal??? Richard ___...___ Reply Separator ___...___ Subject: Re: IR concept Author: cmcmanis@freegate.net at Internet-Mail Date: 29/03/97 00:58 Adam wrote: > An (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Digital Outputs
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Gordon, The steps on how to turn the SPI into 4 digital outputs are in the HB FAQ - off the top of my head I think it goes something like this.... poke (0x1009, 0x3c); /* set the 4 DDR bits for SPI (reg D) */ bit_set(0x1008, 0b00000100); /* set MISO (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Analog ports....
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To: Demian Bigelow <dbigelow@bu.edu> Subject: Re: Analog ports.... Cause I was wondering how well it works. To my understanding, analog phototransistors' outputs depend on intensity. I found that variations in the colors of surfaces reflect (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
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| | Re: AS11
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You have an assembler manual? I only have the HC11 reference. Where do you get one of those? Thanks! :) ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Servo encoder.
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Does anyone see a problem with using the pot in a modified servo and an encoder. I have modified it so that it makes contact once every revolution. Would this mechanical contact create any "bounce" that would interfere with the enoding ticks. (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | connecting Scott edwards mini-ssc to handy board
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Hi, Does anyone have any insight to offer on connecting the HB to the scott edwards electronics mini-ssc servo controller? I wanted to connect directly to the HB through the onboard rj12 jack. Looking at the schematics It seems I might be able to (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | LM2931
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Is it allright if I replace the LM2931 on the Handyboard Interface/Charger Unit with 78L05 (same package)? (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | re: IR frequency / o'scope adjustments
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(...) You want to trigger off of the signal, or maybe the line; the knobs to turn are generally marked "slope" and "level" or something close to this. I usually use a positive slope, I just like the signal to be going in a positive direction at the (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Digital Outputs
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(...) Adam, Have you thought about using a some of the Motor Chip driver digital output lines(if you don't need two motor driver chips)? If you pull one of the L293 chips you can free up 4 digital output lines very easily. It would, of course, (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Re: AS11
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(...) DW - Define word (intel assembler) FDB - Form Double Byte Constant (motorola assembler) Example: (in HC11 memory order) ORG $100 DW $1234 DW $5678 Memory dump start at address $100, you will find: Address Data $0100 $12 $0101 $34 $0102 $56 (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Re: your mail
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(...) The chip you are really interfacing with here is the HD44780 controller on the back of the lcd. It has a character set and a register. You write the register and the controller displays the appr. member from its char. set. There is some (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | where to get screens
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Does anyone know of a place to order LCD screens? I usually ordered them from Mouser but apparently the manufacter has discontinued that line. A would appreciate any help as to where to order them. Thanks in advance... (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Re: AS11
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DB - Define Byte ; allocates one byte of storage with initial value specified DW - Define Word ; allocates two bytes of storage with initial value specified (...) ---...--- Maria Pirsic IEEE Branch Treasurer 96/97 Carleton University (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Thanks to Chuck and Max
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Thankyou to Chuck and Max for the help with writing this code for reading square wave frequencies.If anyone else can use it here it is.Be careful though it resets the board every few seconds.I think that if this is a problem you could probably (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | cancel from mail list
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Please remove me from the emailing list. Thank you Nathan Marcantel nathanm@mail.utexas.edu 512-272-8024 6517 Carisbrooke Lane Austin, TX 78754 (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Re: AS11
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There is a command "DW" and "DB"? If so, what do they stand for? ---...--- 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 (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Re: AS11
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(...) FDB - Form Double Byte Constant (same as DW) FCB - Form Constant Byte (same as DB) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
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| | Digital Outputs (fwd)
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I'm interested in finding more on how I might digitally controll more devices from the HB. (...) (with some asm code) to drive TTL signals to the unused expansion header via A12 and A13 pins of the 6811. If this is possible.... What is envolved here (...) (28 years ago, 30-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Sonar Multi-XDucer Design
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(...) There is currently no occurances of ranging circuits failing due to the use of the multi-xducer circuit. Care should be taken when using the circuit. Before any pings are done check that the mxducer circuit works (ie. SPI signals are (...) (28 years ago, 30-Mar-97, to lugnet.robotics.handyboard)
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| | AS11
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What does FDB and FCB stand for? ---...--- 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 Art ---...--- (28 years ago, 30-Mar-97, to lugnet.robotics.handyboard)
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