Cell: Phone Mixer
2 Comments - in Telephone
A very clever portable cell phone battery charger that uses 8x1.5 AA cells (batteries) to charge cell-phone / mobile phone batteries while mobile. No more need for a mains outlet!
5 Comments - in Telephone
A simple circuit that flashes an LED when a cell phone has an incoming call. Uses a coil to pick-up the signal emitted during an incoming call event. Cell phone call detector.
Outgoing Phone Number Logger Kit
Recorder all outgoing dialed numbers on your phone with this electronic kit.
Solar Battery
Teaches the fundamentals of a basic robotic sensing and locomotion principles while testing motor skills. Includes 5 switch wires controller to grab, release, lift, lower, rotate wrist, and pivot sideways 120°. Transparent arm shows the state-of-the-ar
Cellular Phone Sound Effects
Easy to build sound effect generator kits, inludes several different sounds and tunes.
0 Comments - in Telephone
Electronic circuit that connects to phone line and produces and flashing LED and audible sound when there is an incoming call.
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