 | | Re: LM34 temp sensor to handy board?
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I tried the circuit out tonight, and it works! (Mostly.) I hooked up a 1K and a 3K resistor for R2 and R1, for a gain of 4, and the output is roughly linear with the input. Still need to do some more testing. I ended up having to use a +/- 12V (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | Re: Geting Started?
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Why don't you start by perusing the web site... pretty much all of your questions are answered there. The site's home URL is (URL) in particular: * the FAQ * the "get your hands on a handy board" * the software resources page * the tech docs page (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | Re: LM34 temp sensor to handy board?
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It sounds like you just want a standard non-inverting amplifier. wire an op amp like this: |\ sensor------|+\ | >-+-analog input of 6811 +--|-/ | | |/ | +----R1-+ | R 2 | GND where R1 and R2 are chosen such that (R1+R2)/R2 is the gain you want, in (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | Geting Started?
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Hi everyone, I am fairly new to robotics/electronics and was wondering how to get started with the HandyBoard. So what is the best way to get started? I already know how to program more or less in C and a little in C++ can you program the Handy (...) (27 years ago, 21-Jul-97, to lugnet.robotics.handyboard)
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| | LM34 temp sensor to handy board?
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I've got on my desk here a National Semiconductor LM34 temperature sensor. It outputs a voltage corresponding to 10mV/deg F. So, if it's 78 degrees F in the room, I get a voltage of .78V. I'd like to hook this device to an analog port on my handy (...) (27 years ago, 20-Jul-97, to lugnet.robotics.handyboard)
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| | Com port trouble with IC
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I recently bought a Handy Board which works fine, but my version of Interactive C wants to communicate with the board via COM1 only. The port I have available, without completely changing my computer setup, is COM3. How do you get IC to change ports (...) (27 years ago, 20-Jul-97, to lugnet.robotics.handyboard)
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| | Re: Voltage
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(...) 12v is fine. you could up go to 18v or so w/o problems. you might not even need to change the adapter. if the yellow charge LEDs light, then the batt is charging ok. it will be slower than the original pack but maybe that is not a problem for (...) (27 years ago, 20-Jul-97, to lugnet.robotics.handyboard)
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| | Re: assembling i/c board
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no, it should be just as bright. make sure you use the special low-current HLMP LEDs as specified. normal LEDs won't work right. -Fred (...) (27 years ago, 20-Jul-97, to lugnet.robotics.handyboard)
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| | Voltage
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Hello all, What is the max. voltage I can run through the handyboard. I have a 12v dry cell battery that I would like to use. If I can use a 12v battery, can I change the transformer to the handyboard charging/serial unit? Also, I am looking for a (...) (27 years ago, 20-Jul-97, to lugnet.robotics.handyboard)
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| | assembling i/c board
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Hi, Is it normal for the i/c board PWR led to not glow too intensely?...cause my PWR led is not glowing that brightly compared to my serial led. Before my PWR led did not glow at all until i resoldered some joints that look like it needed more (...) (27 years ago, 20-Jul-97, to lugnet.robotics.handyboard)
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