Multimeter, Clamp Meter, and Lux Meter.

[TimMc]

@TimMc

DIY lux meter with a VEML7700 lux sensor, a Raspberry Pi and get some calibration flashlights?

For example:

RuTiTe - my standalone runtime tester project

Since starting bmengineer.com, I've done a lot of runtime tests of flashlights. I've done all of these with the light sensor built in to an old Moto X Play phone I had laying in a drawer. It's been great, but there were a few things I didn't like about it: The sensor in this particular phone is extremely low resolution, and that's apparent in some measurements Making sure the phone is always charged isn't fun The phone needs to sit perfectly still during readings, which means if the battery st…

WTS: Calibration lights for DIY integrating spheres / lumen tubes - 67 € -

2020 October: No kits available at the moment [image] Update 22.1.2020: Current calibration set consists of two Convoy S2+ with XM-L2 (low CRI, cool white) and SST20 (high CRI, neutral white). Price for the kit is the same at 67 € including two lights. Update 14.3.2019: Interest list for a throwier calibration light (Convoy C8+) added. Only 1 piece measured and ready to go now. Update 20.12.2018: Interest list for an ultra high CRI Nichia Optisolis modded Jetbeam added After some interest f…