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Posts Tagged ‘meter’

A cheap and simple Laser Power Meter LPM for small power source

Tuesday, July 1st, 2014

Here's a cheap and simple Laser Power Meter LPM for small power source, based on "MarioMaster LPM meter" by Davide Gironi: This type of meter uses a ThermoElectric Cooling module (TEC) to measure the power of a laser. The TEC will absorb the laser light, and transform the heat generated by...

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Posted in DIY | 1 Comment »

Keithley 197 teardown and repair

Wednesday, June 18th, 2014

Teardown and repair of Keithley 197 by Kerry Wong: After the meter arrived, I did a quick sanity check and everything appeared to be working fine except for those four silicone rubber momentary buttons on the left. The meter itself was well within spec as you can see from the picture shown...

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Posted in Teardowns | No Comments »

Digital light meter using Arduino and BH1750FVI sensor

Monday, June 24th, 2013

Raj writes that he’s just finished new project a digital light meter using Arduino and BH1750 sensor. The meter can display light intensity in both Lux and Footcandles: A light meter is a device that measures the intensity of light. It finds applications in schools, hospitals, production areas, passageways and...

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Posted in Arduino, sensors | No Comments »

Open source micro-ampmeter with autorange

Friday, February 17th, 2012

Here's an open-source micro-ampmeter with autorange. It can measure current from 0.05μA to 10mA. It's designed on a single layer PCB, making it easy to build with DIY etching techniques: The micro-ampermeter described here is intended for experimenting with low-power devices. I have just a general multi-meter in my home...

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Posted in project logs | 2 Comments »

Steampunk network bandwidth meter

Thursday, November 25th, 2010

Want to see your PC stats in Steampunk style? How about an analog bandwidth meter hack. Ian made a USB analog gauge using a PIC 18F2550 and custom circuit at DIY Life. Thanks McZ! Original at Gizmodo.

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Posted in sensors | No Comments »

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