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Model Airplane Hobby Circuits
#'s - G      H - K     L - O     P - Z

Last Updated on: Saturday, August 30, 2014 10:28 AM


Circuits Designed by Dave Johnson, P.E. :
  • Model Airplane Wing Tip Flasher
    The circuit below is designed to flash two white LEDs mounted at the wing tips of a model airplane.  The flasher unit is powered by a 4.5v supply made of three AA or AAA 1.5v alkaline battery cells.  The average current is about 2ma so a set of batteries should last about 1000 hours of flashing. The circuit uses one hex Schmitt trigger inverter to perform all the timing functions. A single n-channel FET drives the two LEDs, each with a peak current of about 20ma.  The circuit flashes the two LEDs in a pattern typical of commercial airplanes. 


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

A High Speed NiCd Charger for Electric R/C -  A few years back, I published a design for a Low Cost Thermal Peak Detection Charger. Since then, I've designed several other chargers, in my ongoing quest to avoid having to spend money. Of course, in building all these designs, I've probably spent more than a really good commercial charger would have cost me. But designing and building is half the fun....[Stefan Vorketter]
A Low Cost Thermal Peak Detection NiCd Charger -  The electric model aircraft and car industries have produced a bewildering array of field chargers for NiCd motor battery packs. These range from simple 6 or 7 cell chargers consisting of a resistor and mechanical timer, to more complex chargers with peak detection, cycling, and the ability to handle 36 cell packs....[Stefan Vorketter]
A Miniature High-Rate Speed Control with Brake -  Many designs for high-rate speed controls have been published. Most require two 8-pin integrated circuits ( ICs) or one 14-pin IC. Many designs suitable for home construction are fairly large (some as large as 2" square). Many do not include a brake....[Stefan Vorketter]
A miniature low-rate speed control -  A miniature low-rate speed control published in  newsletter published by Electric Model Flyers' of Southwestern Ontario (diagram added 11/06)
AN847: RC Model Aircraft Motor Control -  Microchip Application Note Published 18-Jul-02  (app note added 2/06)
Analog Bar Graph Expanded Scale Voltmeter -  An expanded scale voltmeter (ESV) can save your plane. That may be a strong statement, but it's true. The crucial radio link that lets you control your plane relies on nickel-cadmium (NiCd) batteries in the transmitter and receiver… [Stefan Vorketter]
Autopilot: Do it Yourself UAV -  (diagram added 05/06/07)
BattMan II: A Computer Controlled Battery Manager -  BattMan II is a computer controlled battery manager, intended for typical rechargeable batteries used by R/C and electronics hobbyists, as well as various consumer product batteries…. [Stefan Vorketter]
Electronic Speed Controller for R/C Models -  Here's how you can make an electronic speed controler (ESC) for your remote control car, boat or even an airplane using an old servo and some MOSFETS…. (electronic design added 11/06)
Getting the Most from Your Radio Control System -  About a year after the maiden flight, I wanted to get into electrics, so I bought a Great Planes Spectra. I figured I'd just buy another receiver and three servos. WRONG! I found out that it would be cheaper to buy another transmitter, receiver, and three servos....[Stefan Vorketter]

Model Airplane Circuits:  #'s - G      H - K     L - O    P - Z

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