|
8 Bit Digital Light Intensity Controller - (circuit / schematic
design added 6/06) |
|
8 channel IR remote control - This IR remote control that you can
use to control other devices or circuits up to 8 devices. The control codes
are sent in RC5 format modulated to about 38 kHz carrier frequency.The IR
transmitter powered by the CR2016 which is a 3V button Cells Battery CR2016.
To extend the life of the battery this is done by putting the CPU into SLEEP
mode for most of the time and wake-up only when a key is pressed.
….(electronic schematic added 11/08) |
|
8 Channel RF Remote Control - This is an 8 Channel RF Remote
Transmitter and Receiver that will allow to remotely control various
electronic projects. RF Remote Control provides 2 latched and 6 momentary
outputs that could be used to control your favorite devices such as amplifier,
robotic devices, RC cars, computer, home appliances, lamps and many other cool
gadgets. ….(electronic schematic added 11/08) |
|
80C31 Stepper Motor Controller - (electronic circuit added 4/05)
|
|
9v neon flasher - Schematic only, no circuit description
|
|
9v Powered Xenon Photoflash Controller - This 9v battery powered
circuit is designed for remote control flash needs. A charge control circuit
turns off the high voltage generator when the photoflash capacitor is fully
charged. A neon lamp is included to indicate when the system is ready to
flash. …. [Designed by David A. Johnson] |
|
A 24V/48V Hot Swap™ Controller - DN226 Design Notes (Linear
Technology) (app note added 1/06) |
|
A 4-Digit Keypad Controlled Switch - This is a Universal version of
the Four-Digit Alarm Control Keypad. I have modified the design to free up the
relay contacts. This allows the circuit to operate as a general-purpose
switch. I've used a SPCO/SPDT relay, but you can use a multi-pole relay if you
wish....(electronic schematic added 05/09) [Designer Ron J.] |
|
A 5-Digit Alarm Control Keypad - This Keypad is suitable for the
Modular Burglar Alarm. However, it has other applications. Entering the First
Four Digits of your chosen Five-Digit code, will energize the relay. Entering
the Full Five-Digit code, will de-energize it. [Circuit Designed by Ron J.] |
|
A Cat or Dog Detector for a Pet Flap on a door. - This circuit uses
one tuned coil for on the door and just a single wire loop on the animals
collar. When the two coils come close together, it produces a signal that can
cause a an LED to light and also trips a solenoid to unlock the door so it can
open. Since all these doors are somewhat different, I leave ….(Circuit
design added 3/08) |
|
A Current Limiting Bench Power Supply - This is a 1-amp
variable-voltage PSU. It adjusts from about 3v to 24v: and has the added
feature that you can limit the maximum output current. This is
invaluable when (for example) you power-up a project for the first time or
soak-test a piece of equipment.... [Circuit Designed by Ron J.] |
|
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 - A miniature high-rate speed
control published in newsletter published by Electric Model Flyers' of
Southwestern Ontario (diagram add 10/06) |
|
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 10/06) |
|
A NEW Thermostat Control for Electric Heaters - ….(electronic
schematic added 12/08) |
|
A Serial Infrared Remote Controller - (electronic circuit added
4/05) |
|
A simple Remote control Tester - (electronic circuit added 10/05)
|
