How-To: The Truth Meter

How-To: The Truth Meter

YouTube player

The Truth Meter, a project featured in MAKE Volume 26, measures small increases in sweat which indicate nervousness and other stimuli. So if you’re sleuthing to find out who left the empty milk carton in the refrigerator and your prime suspect does nothing but deny accusations, watch this video and create your own Truth Meter.

For more information about this project and a PDF of the instructions from MAKE, check out:

Here’s a kit with the components you need to build your own:

Discuss this article with the rest of the community on our Discord server!

Matt Richardson is a San Francisco-based creative technologist and Contributing Editor at MAKE. He’s the co-author of Getting Started with Raspberry Pi and the author of Getting Started with BeagleBone.

View more articles by Matt Richardson


Maker Faire Bay Area 2023 - Mare Island, CA

Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 15th iteration!

Buy Tickets today! SAVE 15% and lock-in your preferred date(s).