Haywired: Pointless (Yet Awesome) Projects for the Electronically Inclined
Format: PDF / Kindle (mobi) / ePub
Unless you live in a haunted house, the eyes on your paintings probably don’t follow you around. However, with a couple of motion sensors, two motors, a few transistors, resistors, diodes, and wires you can convert a Van Gogh print into a macabre masterpiece with a mind of its own. Haywired proves that science can inspire odd contraptions. Create a Mona Lisa that smiles even wider when you approach it. Learn how to build and record a talking alarm, or craft your own talking greeting card. Construct a no-battery electric car toy that uses a super capacitor, or a flashlight that can be charged in minutes, then shine for 24 hours. Written for budding electronics hobbyists, author Mike Rigsby offers helpful hints on soldering, wire wrapping, and multimeter use. Each project is described in step-by-step detail with photographs and circuit diagrams. Includes Web sites listing suppliers and part numbers.
the capacitors to the motor. 137 138 Haywired Your car is now complete. Plug in the power for about three minutes. Remove the power supply. Turn the switch on, and the car will move. You can paint or decorate the car to suit your taste. No-Bat tery Electric Car Side rail (x2) Base Frame (x2) 139 140 Haywired Building a Larger Car To build a larger car, two major questions come to mind: How much capacitance will I need? How long will the car run? To come up with an estimate, you
on. The switch is on when the black slider is pushed in the direction of all the soldered switch connections. The switch is off when the black slider is pushed in the direction of the two unused pins. Allow the sensors to “adapt” for about 30 seconds. Place your hand in front of one of the sensors. Hopefully, both eyeballs will move together in the direction of the sensor. If the eyes move the wrong way, it’s not too hard to fix. Remove Connection #56 and Connection #58. Place Connection #56 on
way. DC power (because it is usually low voltage) cannot be moved long distances without tremendous loss in the wires. 3 Multimeter A low-cost multimeter is useful when working on electronic projects. (Radio Shack #22-218 is a nice version.) For example, sometimes you lose track of which wire is (+) and which is (–). For these projects, set your multimeter to a low DC volts scale. The low scale on this multimeter is 15 volts. Multimeter set to DC volts, 15-volt scale. 45 46 Haywired
switches, and he would forget everything when batteries were pulled from his memory. I carried my marginal genius to compete in xi xii Haywired California and New York. The mouse’s competition—there were only 10 or 15 mice in the entire country—were complex robots built by university and research lab teams. Their sophisticated mice found the walls using battery-powered lights and photo detectors. When the TV news team turned on their bright video lights, only my blind mouse—he used door
instructive. Learning by doing teaches many lessons. In this book, you will learn how to make a flashlight and model electric car powered by ultra capacitors rather than batteries. Capacitors can be recharged millions of times and accept a charge quickly. An electric car powered by capacitors could stop at a “filling station” and be fully charged in two or three minutes. Ultra capacitors cost more than batteries and are heavier, but that may change. If you want to build a large car, I include a