Hear with Ultrasound Using a TL494 as a Flanagan Neurophone

Patrick Flanagan invented the “Neurophone” over 40 years ago. His original patent (US3393279) was basically a radio transmitter that could be picked up by the human nervous system. It modulated a one-watt 40kHz transmitter with the audio signal, and used very near-field antennas to couple it to the body. It... Read more »

SIM Card Reader/Writer Kit

With this SIM Card Reader and Writer kit, you are free to experiment with your SIM cards and the information that is stored on them! You can back up stored SIM card data, recover deleted SMS’s and phone contacts, and even examine the last 10 phone numbers dialed! Read more »

Ice Tube Clock Kit

Build the most unique clock on the market, featuring a retro Russian display tube and a clear plastic case so you can appreciate the inner workings of this fantastic gadget! Read more »