Silly Putty is a toy most anyone can appreciate. Pinch it, bounce it, stretch it, slap it on the side of your face—it’ll do whatever you want it to do.

Your kid has a toy remote control fire truck. You have an RTL SDR. See where this is going? [Jacob] couldn’t resist tearing into the why and how of the truck’s remote control protocol.

For this project I show how to make make a pendulum wave, an interesting science/physics experiment where a series of pendulums is measured so that each one moves slightly faster than the one ...