This proof of concept shows an interesting way of making robotic legs. They are using programmable spring actuators to make these legs function as though they had a “reflex”.  The builder pulls...

Although we’ve covered DIY ECGs before, sent in his version that gives an in-depth explanation of what to do with the collected data. He built a basic battery-powered op-amp-based ECG for under...

Solving the age old problem of… wait, what problem are they solving? These students at UC Berkeley have built a toilet paper dispenser prototype. Not only does it meter out an exact amount for...

Sometimes you find yourself thinking “this cell phone is far to compact and unobtrusive.”

[Noah] tipped us off to his work with Physically Engaged Electronic Instruments. He is building instruments, that while being electronic, require physical action to drive them. In the video after...