 | | Re: PWM and executing 2 function at the same time
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thanz Duncan for your advice. but for question 1, what i mean was to count the number of pulses generated without any external device. what i am asking is to count the number of pulses internally. and for question 2, i mean is there any command to (...) (26 years ago, 23-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Sonar Recentering Question
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Great idea! Thanks. Ross Tonkens Ted Mylenbusch (...) RMT (26 years ago, 23-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Sonar Recentering Question
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Just a suggestion but you could mount a Hall effect sensor somewhere near a rotating rounded part on the cage and glue a small piece of magnet to the rounded part. You could look for the pulse on a digital input. This way it would not add much (...) (26 years ago, 22-Mar-99, to lugnet.robotics.handyboard)
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| | Sonar Recentering Question
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I've rigged up a rotating cage holding the Polaroid 6500 transducer at the front of one of my bots. Every time I turn on the handy board, I'd like the software to begin by centering the transducer facing forward. I've rigged a micro motor to a bevel (...) (26 years ago, 22-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid sonar device
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I had similar problems until I installed the .1uF capacitor at C7 on the sonar board as mentioned in the documentation for the use of the sonar device with the expnsion board. Edgar Leatherman, another handy board afficianado, was kind enough to (...) (26 years ago, 22-Mar-99, to lugnet.robotics.handyboard)
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| | Polaroid sonar device
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Hello. I attempted to use the polaroid sonar device which is plugged into my expansion board on my handy board. I loaded the sonar.c file from the handy board web site using IC. When I called the routines in the sonar.c I got a "tick" sound and an (...) (26 years ago, 22-Mar-99, to lugnet.robotics.handyboard)
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| | RE: PWM and executing 2 function at the same time
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hi everybody, i am trying to ask 2 questions. question 1: is there any way to count the no of pulse generate by the handyboard? question 2: can i execute 2 function at the same time?(eg. testdigitals() and testanalogs() at the same time) with (...) (26 years ago, 22-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Battery Change
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At 04:38 AM 3/21/99 +0800, you wrote: They also fit exactly (...) I use NiMh batteries with my HB. Works fine, but I would be careful charging them. Supposedly these batteries require special charge circuits, but I've always found a slight (<150mA) (...) (26 years ago, 20-Mar-99, to lugnet.robotics.handyboard)
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| | Battery Change
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Dear Guys, It just so happens that I remembered that I have four old but still is good condition Ni-MH battery packs from an old cellphone, each pack is rated at 4.8V and 600mAh and the weight of all four of them is just about 75% the weight of the (...) (26 years ago, 20-Mar-99, to lugnet.robotics.handyboard)
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| | more serial problems
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I finally got the serial communications working--thanks for the help. However, I can't get IC up to speed--I'm getting very few bytes through at 9600 bps. I was talking to another team that is working on the same application, and they said they have (...) (26 years ago, 20-Mar-99, to lugnet.robotics.handyboard)
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| | Fwd: (OT) Robotics Engineer
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-- MIME ATTACHMENTS DISCARDED: 1. Content-ID: <0_921929128@inet_ou...aol.com.2> Content-type: message/rfc822 Content-transfer-encoding: 7bit Content-disposition: inline Content-Length: 2010 (26 years ago, 20-Mar-99, to lugnet.robotics.handyboard)
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| | (OT) Robotics Engineer
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Hello Everyone, I received the following e-mail from a student and since I'm not employed in this field I thought there might be someone on the list that could respond. Please send your e-mail address directly to me so that I may forward it. Thanks (...) (26 years ago, 20-Mar-99, to lugnet.robotics.handyboard)
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| | Help with Serial Ports, Please !!!
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Hello, I'm trying to port some working Qbasic code to Tcl8.08 (NT4.0), so I can embed it into the tcl-httpd, and make a robotic application controllable from the web (with the Tcl plug-in), but I'm having a hard time configuring the serial port (...) (26 years ago, 20-Mar-99, to lugnet.robotics.handyboard)
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| | new intranet ip
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the new address for the intranet site is (URL) going to the old address will be redirected to this new one. Hopefully, this will resolve some of the login issues. Regards, mark williamson (26 years ago, 19-Mar-99, to lugnet.robotics.handyboard)
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| | Unsubscribe
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Unsubscribe Handyboard List (26 years ago, 18-Mar-99, to lugnet.robotics.handyboard)
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| | Re: wireless connection
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please reply to me too about this! thanx =) chen (...) (26 years ago, 18-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Using the DC to DC converter
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(...) Yes, P=VI. When the Specification sheet says the converter can source 1W, they mean at most 1 Watt. When your sensor says it consumes 35mA, this is again the max and only if the 12V is supplied. If less than 12V is supplied it will probably (...) (26 years ago, 18-Mar-99, to lugnet.robotics.handyboard)
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| | Using the DC to DC converter
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Hi, I intend to use a 5V source battery going thru a DC to DC converter to get a 12V source. Then this 12v will connect to my diffuse sensor which operrate at 12V. The sensor's current consumption maximum is 35mA. If the output Watt of the DC-DC (...) (26 years ago, 18-Mar-99, to lugnet.robotics.handyboard)
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| | Moutor Output Circuit
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It seems we fried our motor output circuit quite nicely. We've replaced the L293D chips and we replaced the 74HC374 with the 74HC374E that came with our expansion board. Seemed to clear up a few issues, but both LED's are coming on for a couple of (...) (26 years ago, 18-Mar-99, to lugnet.robotics.handyboard)
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| | Re: help please
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Compatible substitutions for: Digikey# P6305 6.3v 470uF NICHICON Aluminum Axial General Purpose Miniature VX Series Capacitance Value: 470 µF Capacitance Tolerance: ± 20% Capacitance Range: 376.00 µF to 564.00 µF DC Voltage: 6.3v DC Temperature (...) (26 years ago, 17-Mar-99, to lugnet.robotics.handyboard)
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