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linux-magazine.com » Issues » 2007 » 83 » ELECTRICKERY   Today’s digital multimeters can do more than measure current and voltage. Multimeters also measure capacity and temperature. An inexpensive multimeter can talk to your PC via the serial port, and simple Perl scripts let you read and visualize data in neat charts. Perl uses a multimeter to report power consumption ELECTRICKERY Author(s): MICHAEL SCHILLI Today’s digital multimeters can do more than measure current and voltage. Multimeters also measure capacity and temperature. An inexpensive multimeter can talk to your PC via the serial port, and simple Perl scripts let you read and visualize data in neat charts. I was browsing a mail order catalog for electronics the other day when I noticed a couple of low-budget, digital multimeters with RS 232 interface. I discovered the MAS-345 model by Mastech on eBay for US$ 35 and quickly pressed the “buy-it-now” button. When the device arrived, it came with just a Windows CD. After a quick search on the web, I discovered the Marsh project, which uses a bit of C code to address the Mastech MAS-345 among other multimeters. Read full article as PDF » Comments Today’s digital multimeters can do more than measure current and voltage. Multimeters also measure capacity and temperature. An inexpensive multimeter can talk to your PC via the serial port, and simple Perl scripts let you read and visualize data in neat charts. Rikki's Open Source Exchange Stop by Rikki's Open Source Exchange for dispatches from the world of women in open source. Rikki Kite examines the experience of women across the spectrum of open source – the people, projects, organizations, events, articles, issues, and news. more...

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