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Old 28th November 2011, 02:36 AM   #1
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Location: santa clara, CA
Default another DIY LCF meter (arduino based)

some photos of my progress. you know the standard lm311 circuit and the PIC versions. this is the arduino version (code still being developed).

what's different is that I have an xbee rf packet radio connected for both wireless firmware updates/uploads and also remote data logging to a pc (sends time,value pairs over the remote serial connection).

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then I added a local oscillator (lm311):

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Old 28th November 2011, 02:39 AM   #2
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oh, and the oscillator (lm311) that I used is a small air-wired kind of deal, lol:

AMB Laboratories DIY Audio • View topic - air wiring a tiny module (pics)

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just for fun and to keep the size down.
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Old 2nd December 2011, 12:18 PM   #3
dangus is offline dangus  Canada
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Clever. Wireless makes a lot of sense; first of all isolation, and no cables in the way. Come to think of it, Bluetooth seems like an ideal interface between instruments and a PC, tablet, whatever. I just ordered a little Bluetooth to serial board off eBay to play with.
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