The DIY Electronic Siren circuit described here can create three different US-style siren sounds: DIY police, DIY ambulance and fire engine. The desired sound can be selected using switch S1.

The FLORA, announced by Adafruit Industries on Friday, is a small, fabric-friendly wearable circuit board for DIY electronics projects.

If you want to get your hands dirty on a semi-evil electronics project, this DIY EMP generator is fun—if not a little dangerous—build to try. It won’t ...