Technology

DIY Ultrasonic sonar with LEGOs

DIY Ultrasonic sonar with LEGOs

Bert writes – “The Devantech SFR04 Ultrasonic Range Finder indicates the distance to the closest object within range. Echo’s that arrive later are received and processed, but subsequently ignored. For a true radar all signals should be taken into account. So, time to heat up the old soldering iron and make some modifications to the […]

DIY Flash grenade

DIY Flash grenade

Abbabibble2 writes – “I’ve come up with a project that i’ve been contemplating for a long time. It’s a flash grenade made from a disposable camera circuit and a part of a pringles can.” – Link. Previous: Build your own Brain Assailant – Link. HOW TO – Make a sonic grenade – Link.

DIY 3D Mouse

DIY 3D Mouse

Neil writes – “Here is an inexpensive way to create a three dimensional pointing device. Take a working mechanical wheel mouse (the type with a scrolling wheel). Remove the ball. Drill some holes in the sides and run a string into the mouse, around the horizontal roller, and out the other side. Reroute the sensors […]

ITR Robot – Home robot

ITR Robot – Home robot

Speecys Corporation’s ITR Robot (“Internet Renaissance”) will be available as a kit for about $1,600 USD in May – the robot is designed to live in homes and interact with you, your phone, etc. [via] – Link. Related: Speecys Corporation – Link. Futaba Corporation – Link.