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 … Read more
Tag Archives: meter
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 … Read more
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. … Read more
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 … Read more
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.