Remote Control Jammer - Collection of Gag circuits, scroll to find this one. Do you have an incessant channel hopper that is driving you crazy? Or perhaps you simply want to enforce your own selections. The TV Remote Control Jammer will do the trick.
This circuit is a redo of an older design which is not effective on modern remotes. Modern remote controls are hard to jam but with a little care this circuit will do the job. The circuit is just a flasher operating at 40 kHz which is the carrier frequency used by common remote controls. The strong 40 kHz infrared flashing interferes with the signal from the remote. __ Contact: Charles Wenzel of Wenzel Associates, Inc.
Remote Control Volume - 17-Aug-11 -Design News: Andrew Morris decided the usual wireless volume controls don’t offer enough functionality, so he created the ultimate volume control that connects between a computer or MP3 player and an amplified speaker system __ Designed by Andrew R. Morris, Gadget Freak-Case #192
Remote Doorbell Beeper - This circuit will activate a beeper alarm whenever the AC line voltage is less than 100vac. . . Circuit by David A. Johnson P.E.-July, 2006
Remote Reset Gadget - This was a trivial, but very useful hack for work. The code is meant for an 8751, with 24 relays or optocouplers driven off ports 0-2. Under serial port control, it will blip a selected relay for a half second or so. __ Designed by Markus Wandel
Remote Telephone Indicator Lights up Ringing Cubicle - 4-Feb-08 -Design News: You leave your cubicle to get a cup of coffee. You get a few feet and hear a phone ring. Is it yours? You dash back and nope, not yours. You head back for the coffee and hear a phone ring again Alan Vogel has a gadget that solves that aggravating problem. His Remote Telephone Indicator turns on __ Gadget Freak-Case #115
Remotely Controlling the Room Temperature - 2-Apr-13 -Design News: Richard A. Bipes adapted a portable remote so he could adjust his electric space heater without getting up. __ Gadget Freak-Case #236
Resistor Network Solver for the HP-67 Programmable Calculator - Programmable Calculator Software
RF Remote Control Volume - 17-Aug-11 -Design News: Andrew Morris decided the usual wireless volume controls don’t offer enough functionality, so he created the ultimate volume control that connects between a computer or MP3 player and an amplified speaker system __ Designed by Andrew R. Morris, Gadget Freak-Case #192
Richard and Jen Ace Stochastics - 16-May-05 -Design News: For Richard Hopkins and Jen Harmel's complete instructions on how to build your own penny slot machine, microcontroller code, and a video of the slot machine in action, click here . To view the parts list, click here . Gamblers who play engineering students Richard and Jen's handy desktop slot __ Gadget Freak
Roach Motel-Electronic - Using a PIC for this device provides a lot of useful functionality. The timing for the power pulse to the inductor is critical to getting the best Zap from your nine volt battery. The longer the current is on, the higher the voltage. Once the inductor reaches saturation, however, you are just waisting power. __ Designed by Luhan Monat, Mesa, AZ
Robert Suddenly Realized the Sand Beneath His Feet Was Kitty Litter - 3-Feb-03 -Design News: All winter long, Robert basks in tropical temperatures right at home in upstate New York-thanks to an ignition timer system he designed for his ancient (1928) but efficient hot water boiler. At startup, the timer keeps the ignition on for 90 seconds while the burner comes to temperature. Tolerant __ Gadget Freak
Robot Hitchhikes Across Canada - 19-Aug-14 -Design News: Elizabeth MontalbanoIf you see a hitchhiker along the road in Canada this summer, chances are it might not be human. That's because a robot is thumbing its way across our neighbor to the north as part of a collaborative research project by several Canadian universities. HitchBOT, as the robot is dubbed, is a __ Video-Gadget Freak
Robotic Hand Teaches Sign Language and 'Rocks on' - July 13, 2009 Design News: The Sign Language Emulating Robotic Assistant teaches the deaf to speak and rock__ Gadget Freak-Case 144
Robotic Hand Teaches Sign Language and 'Rocks on' - 13-Jul-09 -Design News: Here's a robotic hand that teaches sign language, including the international sign for "rock on." J.D. Ritchey and his fellow mechanical engineering colleagues (Tim Campbell, Nick Haub and Brian Taylor) from Colorado State University created an acrylic hand to assist in teaching sign language. __ Gadget Freak-Case 144
Rob's Watching His Truck's Diet - 14-May-07 -Design News: Robert Kwiatkowski designs and deploys data logging systems for Condition Based Maintenance on aircraft carriers. With gasoline prices soaring, he wanted to improve the fuel efficiency of his thirsty truck. As a first step, he's doing some data logging via the OBDII port using this simple interface __ Gadget Freak-Case 102
Rocket ControllerGoes Wireless - 23-Jun-11 -Design News: Here's a wireless way to launch a rocket. William Grill modified his rocket igniter from an early submission, Case #124: Controlling the Rocket Fire. The earlier model included an igniter "fuse" monitor and single discrete LED display. William re-tooled with this new __ Gadget Freak-Case #188
Rocket Launch a Conversation - 18-Mar-07 -Design News: Many of our
, which appear in every issue and on our website, generate a lot of conversation from readers and fellow
alike. Whether they are offering their thoughts on the latest invention, looking for more information or simply generating conversation, our__ Gadget Freak
Room heating controller - Tired of mechanical thermostats that overshoot the set point and make you waste expensive energy? Here is a phase-control device that works well and is simple! __ Designed by Manfred Mornhinweg
Roombots Transform Into Reconfigurable Furniture - 23-Jun-14 -Design News: Ann R. ThryftRobotic self-assembly techniques range from Harvard's engineered DNA to MIT's macro-scale M-Blocks . Now the Swiss Ecole Polytechnique Federale de Lausanne (EPFL) has developed robotic blocks that autonomously self-assemble to form different styles of reconfigurable, adaptive furniture. Researchers __ Video-Gadget Freak
Roulette Wheel a 4000 SeriesC-Mos Design. - Has numbers 1 to 36 plus the 0 and 00, with totally random odds. __ Designed by G.L. Chemelec
Rudolph Had a Fondness For Eggnog - 13-Dec-04 -Design News: Why stop at having a shiny red nose when you can have one that blinks, too, and no hangover the next morning? Engineer and amateur-jewelry-maker Jerry created a nifty little holiday stickpin featuring Rudolph the red-nose reindeer. His low-tech invention involves wiring a low-voltage blinking LED __ Gadget Freak
Ryan Demonstrated the Basics of Torsion Mechanics - 6-Jun-05 -Design News: For Ryan Shannon and friends' complete instructions on how to build your own electronic version of Twister and associated microcontroller code, click here . Engineering student Ryan Shannon and friends created a high-tech, interactive version of Twister that tracks the positions of players on any __ Gadget Freak
Ryan Pooh-Poohed Those Low-Carb Diets - 28-Jun-04 -Design News: To keep his roommates from pilfering his beer reserves, Ryan resolved to build a Fort Knox-like protection device. The BeerBot waits for a correct activation code and then pours (drizzles out, actually) beer until a sensor detects the cup is filled. If the thirsty perpetrator enters the wrong code __ Gadget Freak
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