 | | 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 (...) (29 years ago, 3-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 (...) (29 years ago, 4-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 (...) (29 years ago, 4-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 (...) (29 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 (...) (29 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 (...) (29 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 (...) (29 years ago, 6-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 (...) (29 years ago, 6-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 (...) (29 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 (...) (29 years ago, 7-May-96, to lugnet.robotics.handyboard)
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