 | | Re: Battery Status
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[Duncan Orthner] spake unto the ether: (...) But isn't the supply voltage also the reference for the D/A converter? If the reference drifts, the signal through the divider leg will also drift? I remember trying something like this with a variety of (...) (27 years ago, 4-May-99, to lugnet.robotics.handyboard)
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| | Re: Battery Status
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(...) This is usually how it's done. The voltage will drop predictably as the battery discharges. (...) Yes. You could use a voltage divider. You may have to play with the cutoff point a bit, and be aware that nicads experience a rather sharp (...) (27 years ago, 3-May-99, to lugnet.robotics.handyboard)
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| | Dowload of PCode and registers
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I am building a new handyboard and when I attempt to send the PCode to the board using HBDL for Windows I get an error if 0c is put in the register window. However, if I put 0d it works fine, the files load and the handyboard functions properly. Why (...) (27 years ago, 3-May-99, to lugnet.robotics.handyboard)
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| | Battery Status
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Hi, I would like to measure the battery capacity (how much longer can I keep the operating robot, running under the present battery), but I very newbie in regards to electonics... so here are my newbie questions... :) 1) Is voltage; information (...) (27 years ago, 3-May-99, to lugnet.robotics.handyboard)
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| | 6500 returning dd values
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Hello, I connected a Polaroid 6500 to my expansion board on my handy board and tried to test it but it returnes a different value every time, some of them being odd values (eg -24567). Heres how it lies - on the 6500 per. bd. E1 is connected to the (...) (27 years ago, 3-May-99, to lugnet.robotics.handyboard)
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| | Re: charging circuit
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Hello again, Sorry for the posting, seems as the problem fixed itself, anyhow it's working like it always did now. Thanks anyhow, Terry Gathright ---...--- (...) with (...) (27 years ago, 3-May-99, to lugnet.robotics.handyboard)
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| | charging circuit
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Hi All, I turned on my handyboard yesterday and found that the battery had died, zero,no voltage. I then plugged the wall transformer wire into the jack on the handyboard as I had been doing all along. The charge yellow led on the handyboard blinked (...) (27 years ago, 3-May-99, to lugnet.robotics.handyboard)
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| | UV sensors?
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I am doing a project that involves detecting UV light. Has anyone ever uses UV sensors. And where would I be able to get these sensors? -Peter (27 years ago, 2-May-99, to lugnet.robotics.handyboard)
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| | Re: string functions and Interactive-C
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(...) Dear Matt, Serial i/o routines available in the FAQ at the MIT site for the handy board send characters. Write a function which using % and / operators to convert a number into digits. The function should send each digit as a character along (...) (27 years ago, 2-May-99, to lugnet.robotics.handyboard)
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| | string functions and Interactive-C
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I would like to be able to construct various useful strings and send them out the serial port (not just to the display). For example, I would like to be able to do something like: sprintf(buffer,"Motor Temperature is %d",mot_temp); (...) (27 years ago, 2-May-99, to lugnet.robotics.handyboard)
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