 | | Re: So close, yet so far
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|
(...) But the hearbeat continues on the handyboard, and the software worked before I soldered the Futaba J connector on, hence my thinking that I hurt the board and caused a hardware failure. Could a hardware failure make the board crash at this (...) (28 years ago, 21-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: So close, yet so far
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|
This is almost certainly software. your i23o123.icb file is trashing the interrupt vectors and the board crashes. -f (...) (28 years ago, 21-May-96, to lugnet.robotics.handyboard)
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| | So close, yet so far
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|
AAaarghh. I soldered in the final connections for the outgoing pulse-trains from TOC2. I use the Handyboard to take in pulse trains on IC2 and IC3, massage the numbers, and output the massaged commands on OC2 and OC3. Only the signals go through the (...) (28 years ago, 21-May-96, to lugnet.robotics.handyboard)
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| | european handy board users census
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european handy board users, please send me an e-mail, i would like to ask you a few questions. ******** thanks in advance silvain pinot (living in france and wondering if yes or no he will build a handy board) (28 years ago, 21-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: your mail
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|
(...) Ghostscript for the Amiga is pretty unusable. I tried it quite a while ago, and got thoroughly sick of it. My solution was to start using my parents' Pentium. :-) (28 years ago, 20-May-96, to lugnet.robotics.handyboard)
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| |
| | (no subject)
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(...) OK, take a look at (URL) installed a link for you. Also, did you know the IC manual is on the web? It is at (URL) I am not sure, but I would bet there is an implementation of GhostScript for Amiga. Check it out. This would let you view (...) (28 years ago, 20-May-96, to lugnet.robotics.handyboard)
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| |
| | (no subject)
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|
Greetings! I am new to the handyboard, and am currently building my first robot. I am having a problem with docs.. I have icmanual.ps AND icmain.pdf.. The problem is that I am using an Amiga, and cannot read or decode either of these formats. Could (...) (28 years ago, 20-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: Digital Outs?
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|
(...) See the FAQ: (URL) Alternatively, are there any serial rs-232 facilities available on the (...) This would be easy to do; someone just has to write 6811 machine code to perform async serial out functions. you would be able to use any of the 4 (...) (28 years ago, 19-May-96, to lugnet.robotics.handyboard)
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| |
| | Digital Outs?
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|
How can I set up digital outputs from the handyboard? I would like to drive 3 or 4 LEDs on my robot. Can I make the digital ins outputs? Alternatively, are there any serial rs-232 facilities available on the handy board other than one used for (...) (28 years ago, 18-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: IC problems, part II
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|
(...) (28 years ago, 18-May-96, to lugnet.robotics.handyboard)
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| |
| | IC problems, part III!
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|
Alright, one more fun fact - the old shareware version of IC works fine, running under the Win 95 MS-DOS prompt. I think that eliminates any possibility of a hardware problem, meaning it's IC 3.1 at fault! Hbdl works fine as well, under Win 95. (...) (28 years ago, 18-May-96, to lugnet.robotics.handyboard)
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| | IC problems, part II
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|
Also, IC ctually _works_ if I'm downloading something with my internal modem. This is probably slowing down the transfers IC is making enough for them to work. Once the download stops, however, IC quits working again. Truly strange. (28 years ago, 18-May-96, to lugnet.robotics.handyboard)
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| | IC download errors
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Today, IC 3.1 has decided it no longer wants to communicate with my handy board. It detects the board, I select the Handy Board .icd file, and then it tries to download the default files to the board. However, it errors out on each retry, and gets (...) (28 years ago, 18-May-96, to lugnet.robotics.handyboard)
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| | IC for Win 95
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|
Has anyone heard of a release date for a new version of IC for Win 95? The bugs in the present beta are getting... irritating. Maybe I should write a $100 check to Newton Labs and see what happens, eh? :-) (28 years ago, 17-May-96, to lugnet.robotics.handyboard)
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| |
| | encoders w/sonar?
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|
After I slap a Polaroid sonar module onto my robot, I'd like to add some shaft encoders. However, it appears that the shaft encoder routines and the sonar routines both use some of the same ports on the digital headers. Is it possible to use other (...) (28 years ago, 17-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: voltage regulator current rating
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|
(...) Is there any current going directly into GND from the LM2931Z-5.0? If so, would this cause any "extra" heat other than from the current the HB draws? -Eric (28 years ago, 16-May-96, to lugnet.robotics.handyboard)
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| |
| | SPI Bus problem solved!!!!!!
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|
Hi-dee ho, I'm happy to report that I've successfully gotten a Handyboard to communicate to a Miniboard via the Synchronous Serial bus (SPI). The secret was (as I alluded to in my last post on the subject) setting the DDRD (Data direction for port (...) (28 years ago, 16-May-96, to lugnet.robotics.handyboard)
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| |
| | Available J sockets on Hboard?
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|
Are there any unused sockets on the Handyboard? For example, the bottom 2 sockets in J6 look to be unused, and I could use a couple of sockets to bring out some signals. Now that the thing is assembled, it's difficult to follow traces on the top (...) (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| |
| | Thanks for all the replys on the L293D
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|
Thank you Best regards Jakob Lunderg (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: Downloading without AC adapter
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|
(...) Yes. The interface will draw power from the HB's battery. Don't leave the HB plugged into the interface w/o the adapter for extended periods, because the interface will drain the HB's battery even if the HB is switched off. -Fred (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: Error Messages
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|
(...) What version of IC are you running? Are you by chance running the old DOS version 2.86x under Windows? -- Randy (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| |
| | Should I?
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|
Hi all, I am a young Dutch engineer assigned to build a prototype of a six-legged robot. I am considering to use the handy-board as the controller. There are however a few questions I have. First of all, is it possible to control six motors with the (...) (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| |
| | Downloading without AC adapter
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|
Is it possible to download pcode and programs to the HB with having the AC adapter plugged in? -John (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| |
| | Where can i buy L293D in Scandinavia
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|
I have the problem to locate a suplayer of the L293D needed for the motor output circuit. Can anyone tell me who i manufacturing the L293D. is there any alternate suplyer and which manufacturer is that. Jakob Lundberg mail: jakob.lundberg@atc.mil.se (...) (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| |
| | Error Messages
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|
Hi to all, Why do I get the following error messages when I load my files to the Handy-board? Thank you in advance. Armen Initializing interrupts Downloading 1840 bytes (addresses 8000-872F): 1840 loaded Downloading 78 bytes (addresses 8730-877D): (...) (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: 15' max measurement
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|
(...) I beleive "hard" rigid materials have high reflectivity of sound, such as metal and granite, etc. Pourous materials absorb sound, like brick and wood. You may have notised that sound absorbtions usually involve foam pads on the walls and (...) (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: 15' max measurement
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|
(...) I believe it would matter what type of material you reflect the pulse off of, I would guess. Different surfaces have differenc acoustical properties. Just like they have those silent rooms and echo chambers, etc. (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| |
| | 15' max measurement
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|
Yup, it looks like 15' is about as far as I can measure. In fact, if the distance is _too_ great, I start getting weird measurements, on the order of 8 or 9 feet. Strange. I turned the gain up a bit, which keeps those erratic measurements from (...) (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| |
| | sonar module
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|
Well, I finally got my Polaroid sonar module in the mail, and I got it working with my Handy Board tonight. My feelings thus far: This thing is pretty neat. However (of course), there are a few quirks that I'm trying to figure out. Distance (...) (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| |
| | Continuation of the quest to understand the SPI port
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|
Hi, Under Interactive C, something is resetting bits 6 and 4 of the SPCR register (0x1028). Whenever we try poke(0x1028,0x5C); and then do a peek(0x1028), we always get back 0x0C!!! Trying to figure out whether this was an instantaneous thing or (...) (28 years ago, 12-May-96, to lugnet.robotics.handyboard)
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| |
| | Menu.c converted for HB
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|
Just to make my tiny contribution to the Handy Board community, I decided to convert the menu.c file for the 6.270 board for use on the Handy Board. It is available in the ic_contrib/jkeyzer directory on cher, for anyone who wants to check it out. (...) (28 years ago, 11-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: Summary Re: Ordering from 6270 Technologies
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|
by the way What is 6270 Technologies email address? I've lost my reference to it. cheers ray (28 years ago, 10-May-96, to lugnet.robotics.handyboard)
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| |
| | Summary Re: Ordering from 6270 Technologies
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|
The 6.270 2.21 board set was gratuitously received on May 8th; although the original email query was sent out 11/28/95 and the check sent out on 12/5/95. The general responses that I received from people responding back is similar to the (...) (28 years ago, 10-May-96, to lugnet.robotics.handyboard)
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| | infos
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|
I'm a newbe in this list, not having already built my first HB (but my PCBs are on the way...) and I've some questions: - I think to try to use also ASM on the Handy ... will it be possible? and if so, as i think, where can I get infos on, by (...) (28 years ago, 10-May-96, to lugnet.robotics.handyboard)
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| |
| | A Project In Planning
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|
Hi Ya, I am a team member of a team that is planning to build a robotic platform for a research project. What we want to do is build a platform with a Handy Board and a PC on it. The HB will deal with the drive motors (through and interface card to (...) (28 years ago, 10-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: handy board kit research & robot
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|
Handy Board main web page is: (URL) there are many links to all important information on hardware and software. Handy board is well worth the cost. I love it. An excellent company to buy from here is 'Digital Micro Systems'. I don't beleve there is (...) (28 years ago, 9-May-96, to lugnet.robotics.handyboard)
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| | handy board kit research & robot
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i search a handy board kit ??? Where i can find it and how cost it??? Can i found it in Europe or France ??? where can i found information about small robot with handy board herbron@aar.alcatel-alsthom.fr (28 years ago, 9-May-96, to lugnet.robotics.handyboard)
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| |
| | Expansion board code
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|
Can anyone tell me where I can find the code to activate the beta expansion board? Larry ***...*** Larry Randall ***...*** If it works Don't fix it! ***...*** lrand@cts.com ***...*** (28 years ago, 9-May-96, to lugnet.robotics.handyboard)
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| | ni-cads in parallel
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|
(...) We've had a debate on this issue a couple of times on the rec.models.rc.air newsgroup a couple times recently (check out www.dejanews.com) and the consensus seemed to be that parallel packs should not be a problem. (...) You should definitely (...) (28 years ago, 7-May-96, to lugnet.robotics.handyboard)
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| | Re: ni-cads in parallel
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|
(...) Yes. My problem is that my motors draw somewhere around 2 amps average, and the AA pack I have is rated at 600mAh. This isn't much fun, I'm tempted to leave the thing plugged in instead of charging it every few minutes! It's really not tooo (...) (28 years ago, 7-May-96, to lugnet.robotics.handyboard)
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| |
| | new project announcement
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|
"the book of ruins and desire " an Interactive Kinetic Sculpture by Pamela Jennings Thesis Presentation public slide/talk: Thursday May 9, 1996 6:30 SVA MFA Computer Arts Thesis Show: May 31 - June 15 1996 Visual Arts Gallery 137 Wooster Street, New (...) (28 years ago, 7-May-96, to lugnet.robotics.handyboard)
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| | Re: ni-cads in parallel
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|
Don't do this. First off, you won't get more current, nicads already can deliver gobs of current, enough to be dangerous. You want more amp-hours, not more instantaneous amperage. Secondly you will have problems with cells charging each other. I (...) (28 years ago, 6-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: ni-cads in parallel
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|
(...) This is generally not a problem. If you get a 7.2v strip of C-cells from a hobby store (this is a 5 cell battery) they can deliver about 150 amps for a short while. You are correct that charging NiCds in parallel has issues. I guess the (...) (28 years ago, 6-May-96, to lugnet.robotics.handyboard)
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| | using ni-cads in parallel
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|
Ni-cads have really low internal resistance. If the two packs start off at different levels of charge, you may have a problem with lots of current flowing between the packs when you first connect them. I'd recommend moving to a larger pack rather (...) (28 years ago, 6-May-96, to lugnet.robotics.handyboard)
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| | ni-cads in parallel
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|
Does anyone know anything about connecting Ni-Cad packs in parallel to get more current? I'm trying to connect two 6V packs in parallel for driving my motors and sonar, and I also need to make a 4.8 tap to drive a servo. I'm not sure how Ni-Cads in (...) (28 years ago, 6-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: voltage regulator current rating
|
|
(...) The rated total is 1 amp. The HB itself draws 100 to 200 mA? I'm not sure, I haven't measured it exactly. Since the HB's battery is 9.6v, and the output voltage of the regulator is 5v, the thing drops 4.6v, and at 600 to 700 mA of current that (...) (28 years ago, 6-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: Assembler
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|
Hello all, I'm working with a friend of mine in the Robotics lab at the UofM to try to interface a Miniboard with a Handyboard through the SPI bus. We're having a fair amount of troubles trying to do it through interactive C. I figure we'll have to (...) (28 years ago, 4-May-96, to lugnet.robotics.handyboard)
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| |
| | voltage regulator current rating
|
|
Does anyone know the current rating on the 5V voltage regulator located next to the power switch? I am using a bunch of IR sensors, and am supplying power to them via the +5 V bus, but my VR seems to be getting quite hot. The sensors draw around (...) (28 years ago, 4-May-96, to lugnet.robotics.handyboard)
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| |
| | new project announcement
|
|
"the book of ruins and desire " an Interactive Kinetic Sculpture by Pamela Jennings Thesis Presentation public slide/talk: Thursday May 9, 1996 6:30 SVA MFA Computer Arts Thesis Show: May 31 - June 15 1996 Visual Arts Gallery 137 Wooster Street, New (...) (28 years ago, 3-May-96, to lugnet.robotics.handyboard)
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| |
| | Ordering From 6270 Technologies
|
|
Fellow Roboticists, I am having a great deal trouble in getting my already "paid for" board sets from 6270 Technologies and Panji (P.K.) Oberoi. Back on the first week of Jan 96, I ordered and paid for a 6.270 ver 2.21 board set. During this time I (...) (28 years ago, 3-May-96, to lugnet.robotics.handyboard)
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| |
| | updating the FAQ
|
|
Hi Fred, In the ICB faq, could you change: Please note one big GOTCHA with ICB files. On the MS-DOS platform, the ICB files must have Unix-style line termination. OK, what does that mean. to something like: Please note one big GOTCHA with ICB files. (...) (28 years ago, 2-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: sony-ir.icb problem
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|
(...) First, check the FAQ before posting! One solution to problems with ICB files are already answered in: (URL) is a copy of the answer for your convenience. If this does not solve your problem please follow up. -Fred I'M USING MS-DOS AND IC WON'T (...) (28 years ago, 2-May-96, to lugnet.robotics.handyboard)
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| |
| | Controlling the H-Bridge Circuit with the HB
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|
Hello all, I was wondering how the HB can control an H-Bridge? I was hoping to use a IC that already has H-Bridges on it. These IC's only need a TTL signal. So if someone could tell me what all needs to be physically done to the HB to accomplish (...) (28 years ago, 1-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: IC beta for windows
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|
Our Web page ((URL) has a new key which will allow you to keep working with IC 3.1 Beta 1: 24474-49110-8743-49275-2 Just type this key into the registration dialog box; leave the "user" field the same. I'm sorry I haven't gotten around to a new beta (...) (28 years ago, 1-May-96, to lugnet.robotics.handyboard)
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| |
| | FW: IC beta for windows
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|
Does anyone have an answer to the below questions? Larry ---...--- From: Randall, Larry (SD-MS) To: ic Subject: IC beta for windows Date: Tuesday, April 30, 1996 11:04AM The key to IC Beta runs out in a couple days. Any word on v3.1? Do we just stop (...) (28 years ago, 1-May-96, to lugnet.robotics.handyboard)
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| |
| | sonar for obstacle avoidance
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|
Ok, it seems that everyone thinks the Polaroid sonar module is pretty nifty. However, how is it for _obstacle avoidance_? My new robot has a dire need for a way to keep from crashing into things all the time, and sonar would seem to be a nice (...) (28 years ago, 1-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: sonar for obstacle avoidance
|
|
You mean besides making it 'crawl'? In my robotics class were were programming autominus vehicle equipped with a servo mounted sonar on the front. The basic process is this: 1) scan 2) analyze data... (aka look for wall shaped thing) 3) adjust (...) (28 years ago, 1-May-96, to lugnet.robotics.handyboard)
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| |
| | Re: sonar modules
|
|
(...) Ahh, ok, that's pretty easy for me... Did you mount your array on a servo or anything? Are the transmitter and receiver both part of one module? (28 years ago, 30-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Re: sonar modules
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|
(...) Where does it get it's power from? The handy board? I just might go out and buy one of these, since I'm getting tired of my robot smashing into walls! :-) (28 years ago, 29-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Re: sonar modules
|
|
Can I get more details on the wiring? I am using the description by kent I believe. Connecting BINH is preventing it from working. It clicks but the echos immediately (0 inches). without BINH, I get it to run but with minimal distance of 18". Maybe (...) (28 years ago, 29-Apr-96, to lugnet.robotics.handyboard)
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| |
| | sony-ir.icb problem
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|
Hi! I just unpacked my new Handy Board and tried some stuff I found in the IC manual. What can you say about the following error? C> load sony-ir.icb Loading sony-ir.icb. Fatal internal error: Illegal line in .s19 file -martin + Martin Frischherz (...) (28 years ago, 29-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Re: sonar modules
|
|
Hi Jeff, The Polaroid sensors work pretty darn well. I've been able to get 1" resolution from 8" to 130"++ (reportedly they work to 35 ft - my room's not big enough to try this out). I was able to get mine working in about 10 minutes. Basically, (...) (28 years ago, 29-Apr-96, to lugnet.robotics.handyboard)
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| |
| | excessive motor current?
|
|
I just managed to convert a Cat D10 toy into a robot. In doing so, I've converted the power source for its motors from Alkaline to NiCads. One thing I've noticed is that the NiCads make the robot seem A LOT more powerful. I measured the current (...) (28 years ago, 29-Apr-96, to lugnet.robotics.handyboard)
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| |
| | sonar modules
|
|
How well do the Polaroid sensors everyone's using work? Do they require much external circuitry or any modifications to the handy board? I'm interested in them since I'm finally managing to get a nice working robot going... (Yeah everyone, I (...) (28 years ago, 29-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Code for simple robot
|
|
It is possible that there are those out there that may be as bad at 'C' as I am, so for what is worth, here is my code that is working. My bot, Rug-Runner, with HandyBoard, has been wandering around my house for about half an hour now without (...) (28 years ago, 28-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Re: IC Timing
|
|
(...) I don't know if this is really the best way to do it, but I hacked this up real quick for a previous project. You put the stuff you want to time inside the loop. It will print out the numer of times the loop executes per second. The display is (...) (28 years ago, 27-Apr-96, to lugnet.robotics.handyboard)
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| |
| | IC Timing
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|
How do you time a running process? I would like to prune the running time of a part of my IC program running in the HandyBoard, to improve the response of my sensor testing. I assume you could set a clock and then sample it later but I am a little (...) (28 years ago, 27-Apr-96, to lugnet.robotics.handyboard)
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| |
| | 'Cher' responses
|
|
Ok, I got it. Apparently my service provider wasn't keeping any of my mail, so I didn't get any of your first responses to my question. Anyway, thanks to all of you for replying a second time. Patrick (28 years ago, 26-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Re: "cher" archives
|
|
Hi Patrick, I don't know if cher has a web server on it, but you can ftp anonymously to: cher.media.mit.edu login: anonymous password: <your e-mail address> Check in the /pub/projects (I think). Good luck! - Prabal (...) (28 years ago, 26-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Re: "cher" archives - Resend
|
|
Well, I tried to send this out when Patrick first asked, but apparently it didn't make it -- here's the second try: (...) (28 years ago, 26-Apr-96, to lugnet.robotics.handyboard)
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| |
| | "cher" archives
|
|
(...) but here goes: I've noticed more than a few referrals to "the cher archives" since I've been on this mailing list, but I haven't figured out how to get there. Can someone give me the URL, and maybe tell me if there is a way to look up specific (...) (28 years ago, 26-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Re: Thanks for HandyBoard
|
|
(...) This may not be EXCATLY what you have requested, but it is a close as I've come! Check out how I've added contrast control to my LCD panel. (URL) *Brian Schmalz /---...---+---...---\ | Brian Schmalz | Building autonomous | | 723 E. John Street (...) (28 years ago, 25-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Thanks for HandyBoard
|
|
I am a vetern kit builder with my roots in the hayday of HeathKit, and I would like to take the opportunity to thank all concerened in the design and production of the HandyBoard. Of all the controllers I have purchased this one has been the most (...) (28 years ago, 25-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Forth on HandyBoard?
|
|
Is it possible to program the HandyBoard in 'Forth'? If so how does one go about it? I assume the compiled Forth program must be further converted into a PCode. Is there a version of Forth that does that at compilation? Anyone know where to look? (...) (28 years ago, 25-Apr-96, to lugnet.robotics.handyboard)
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| |
| | thanks! (problem fixed)
|
|
Thanks to all the extremely useful information everyone was able to provide me, I have been able to fix my COM port problem. I changed some CMOS settings, moved the internal modem's IRQ to 10, and configured the new port as COM2, with a new IRQ. (...) (28 years ago, 24-Apr-96, to lugnet.robotics.handyboard)
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| |
| | REC80 Transmit
|
|
Folks, After writing code to decode REC80 signals I got inspired to write code to transmit them as well. But I sat on the idea for quite a while and didn't get around to it until now. So this weekend I worked on the idea and it is now complete. What (...) (28 years ago, 24-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Edit within IC
|
|
How can we edit file without quit IC, I don't have emacs in computer, so can i use like the ms-dos edit. Thanx. Hachemi (28 years ago, 24-Apr-96, to lugnet.robotics.handyboard)
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| |
| | adding a third serial port
|
|
(...) I agree that this is a most annoying problem. On the other hand, other types of computers get away from this problem by not being so expandable. Some day, when "plug and play" actually is implemented by most of the hardware vendors, some of (...) (28 years ago, 23-Apr-96, to lugnet.robotics.handyboard)
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| |
| | Re: pc com port woes
|
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(...) Yes, you need to use a serial card inside your computer that offers add'l com ports. It isn't clear from your message if that is what you have. If so, the trick you are missing is that multiple com ports cannot share the same IRQ. Most or all (...) (28 years ago, 23-Apr-96, to lugnet.robotics.handyboard)
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| | Re: pc com port woes
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There is away around this. Configure your com ports to use a different IRQ. Typically the second parallel port IRQ (5) is available. If neither your modem nor your com ports will do this then you will need to buy a new com port board that has (...) (28 years ago, 23-Apr-96, to lugnet.robotics.handyboard)
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| | Re: Using low voltage motors
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In your message you said: (...) What do you mean, "from the 20V range"? the HB supplies about 8 to 9v to its motor outs. a 30 ohm resistor would be about right for the 200mA current level. The resistor would drop 6v leaving about 2 for the motors. (...) (28 years ago, 23-Apr-96, to lugnet.robotics.handyboard)
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| | pc com port woes
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Today, for the first time, I decided to actually try out the new version of IC on my new Pentium, running Win 95. To make a long story short, it doesn't work. Why? Because I've got two devices, my mouse and my internal modem, which are always (...) (28 years ago, 23-Apr-96, to lugnet.robotics.handyboard)
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| | Using low voltage motors
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I'm using two low voltage motors that come attached to a really cool gear box. Or rather I want to use these motors. Each seems to work best at about 2.0 V. When running they draw about 200 mA. I tried running them in series with a 40 Ohm resistor (...) (28 years ago, 23-Apr-96, to lugnet.robotics.handyboard)
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| | Re: HB pins ?
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(...) Each sensor "connector" is a column of pins in the following format, where "X" denotes a pin position: X X X So, if you look at the lower edge of the HB, you have 16 positions in a bank of 9 and 7: XXX...XXX XXXXXXX XXX...XXX XXXXXXX XXX...XXX (...) (28 years ago, 22-Apr-96, to lugnet.robotics.handyboard)
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| | Re: HB pins ?
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(...) Check out a diaram that I uploaded to cher. It's in postscript as well as GIF format. It has all of this suff on it (and more). I made it out of frustration while I was working on my HB! It's at ftp://cher.media.mit...b/schmalz/ as well as a (...) (28 years ago, 22-Apr-96, to lugnet.robotics.handyboard)
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| | Re: HB pins ?
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Go to the Handy Board web page and follow the links to the schematic diagrams. These will probably answer most of your questions. I have to look them up myself, every now and then. Larry (...) (28 years ago, 22-Apr-96, to lugnet.robotics.handyboard)
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| | Re: HB pins ?
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(...) You might want to check the handy board web site, at (URL) as it gives a diagram of the function of each connector on the board. Also, there's a document about interfacing sensors to the handy board which will give you a pretty good idea of (...) (28 years ago, 22-Apr-96, to lugnet.robotics.handyboard)
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| | HB pins ?
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So far, I don't know wihch is which in the HB I/O pins, I know that 0 to 6 are analog in, and 7 to 15 are dig. in, but I want to know which one is PA1, TOC1, ... and also what does the first row means, the second , the third, and for some of them (...) (28 years ago, 22-Apr-96, to lugnet.robotics.handyboard)
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| | Re: "cher" archives
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(...) Patrick, the URL you're looking for is: ftp://cherupakha.media.mit.edu This is the ftp archive of the Epistemology and Learning Group at the MIT Media Laboratory. The Handy Board information can be found in this folder: (...) (28 years ago, 22-Apr-96, to lugnet.robotics.handyboard)
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| | Sign me up to mailing list
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-- Eric Eisenhower Chief Technical Officer Intelus - a SunGard Company 9210 Corporate Blvd #400 Rockville, MD 20850 ee@intelus.com 301-990-6363 x230 301-330-6707 fax (28 years ago, 22-Apr-96, to lugnet.robotics.handyboard)
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| | Re: it works!
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(...) Great Jeff, I've been planning on doing the definitive breadboard/diagram and document here but haven't gotten to it. Don't worry overmuch about "oversaturation", you are using the transistors as switches and as long as you don't violate the (...) (28 years ago, 22-Apr-96, to lugnet.robotics.handyboard)
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| | IR & Modules / Need help
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I am installing a couple IR emitters and two Radio Shack / Sony IR modules for close in object avoidance. Two main questions: 1) Which software do I use? I have R22-ir.icb which seems to be for the 6.720 Rev. 2.2 board. Will that work? 2) Where does (...) (28 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
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| | "cher" archives
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OK, I know this is going to sound like a stupid question to most of you, but here goes: I've noticed more than a few referrals to "the cher archives" since I've been on this mailing list, but I haven't figured out how to get there. Can someone give (...) (28 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
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| | it works!
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Hey, it's time to celebrate! :-) I managed to get the h-bridge circuit working, after thinking about it for a while, tinkering a bit, and reading a couple chapters on transistors... :-) I can run a motor forward and backward, with no problem. The (...) (28 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
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| | Re: Handy and mini boards
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(...) Yup. Worked for me. :-) I used port D on the HB as a 4 bit output, ran a cable from there to port C on the MB, and used one of the Y signals on the HB as a data ready line. On the MB side of things, I just sat in a loop waiting for YX (where X (...) (28 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
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| | Handy and mini boards
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Has any one thought of the possibility of interfacing a miniboard to a handyboard? It would be a cheap way to get extra input/ motor control. Is this possible? (28 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
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| | RE: diodes in h-bridge
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When the motor power is removed, the motor generates a reverse voltage. This voltage can damage the transistors, the diodes provide a conductive path back to the power supply to absorb these spikes. Convieniently, N-channel MOSFETs (and other (...) (28 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
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| | Code for Polaroid Sonar board
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Hi Kent, I just wanted to let you know that your code for the Polaroid ranging boards is fantastic! It works right out of the box! Keep up the good work. - Prabal P.S. For anyone who doesn't know what I'm talking about, Kent wrote some code to (...) (28 years ago, 21-Apr-96, to lugnet.robotics.handyboard)
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| | diodes in h-bridge
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What do the diodes across Q1-Q4 do, in Chuck's h-bridge design? I haven't figured that out yet.... (28 years ago, 20-Apr-96, to lugnet.robotics.handyboard)
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| | mailing problems fixed (already! :-)
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Ok, disregard that last message. :-) (28 years ago, 20-Apr-96, to lugnet.robotics.handyboard)
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