 | | 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
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(...) 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
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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
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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, 3-May-96, to lugnet.robotics.handyboard)
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| | Ordering From 6270 Technologies
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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
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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
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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
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(...) 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
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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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