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Remote control for lamp or appliance – Circuit Schematic
Remote control for lamp or appliance
The circuit uses the primary current of a small 6 volt filament transformer to actuate a triac and energize the load. When switch Si, in the six-volt secondary,...
Photocell memory switch for AC power control – Circuit Schematic
Photocell memory switch for AC power control
Provides remote control for ac-powered devices by using the beam of a flashlight as a magic wand. The important aspect of this gadget is that it remembers. Acti...
IR transmitter – Circuit Schematic
IR transmitter
This simple infra-red transmitter, where the PPM output from pin 2 of the SL490 is fed to the base of the PNP trasmitter TR1, produces an amplified current puls...
IR remote control transmitter-receiver – Circuit Schematic
IR remote control transmitter-receiver
The circuit is designed to operate at 25 kHz. The data stream turns the 2N4401 hard on or off depending upon the coded state. This in turn switches the series i...
Radio control – Circuit Schematic
Radio control
A simple and effective receiver for actuating garage doors, alarms, warning systems, etc. The SCR, which has a very low trigger current 30 µ is typical�...
Infrared transmitter II – Circuit Schematic
Infrared transmitter II
The transmitter keyboard is arranged as a scanned matrix. The matrix consists of 7 driver outputs and 7 sense inputs. The driver outputs DRVON to DRV6N are open...
Remote control Encoder M145026B-1
This encoder can generate up to 19,683 codes from 9 address lines by detecting 1,0, or open circuit. To initiate the transmit sequence, pin 14 should be pulsed ...
Simple Infra-Red Transmitter/reciever Shematics
This 1 channel infrared transmitter/receiver remote control is the cheapest and simplest you can find. The transmitter transmits a sequence of pulses on 36 KHz ...
IR 4 channels remote control with PIC12F629 – Circuit Schematic
IR 4 channels remote control with PIC12F629
The circuit above illustrates using the IR receiver module along with a PIC12F629 microcontroller to decode 5 individual IR remote control keys so the cir...
Remote switching with Laser Pointer – Circuit Schematic
Remote switching with Laser Pointer
The circuit below is similar to the one above but can be used with a laser pointer to toggle the relay rather than a push button. The IR photo transistor Q1 (Ra...
IR Remote Control Transmitter ATtiny28 – Circuit Schematic
IR Remote Control Transmitter ATtiny28
Use of IR (infrared) light as a method for wireless communication has become popular for remote control applications. There are a number of different standards...
Motorised Infrared volume remote control – Circuit Schematic
Motorised Infrared volume remote control
A nice circuit for using with audio preamplifiers, or any other circuit that use potentiometer and you need to control it from distance. The circuit includes In...
Infrared Remote Control Jammer circuit – Circuit Schematic
Infrared Remote Control Jammer circuit
The IR Jammer is a fun project that provides a bit of safe, non-destructive fun. The Infrared Remote Control Jammer allows you to render all IR remote controls ...
Infrared Remote Control circuit – Circuit Schematic
Infrared Remote Control circuit
The transmitter is shown and although straightforward, there are a couple of tricks that I had to incorporate to minimise battery drain during standby. Although...
Ultrasonic switch circuit – Circuit Schematic
Ultrasonic switch circuit
This circuit functions with inaudible (ultrasonic) sound. Sound of frequency up to 20 kHz is audible to human beings. The sound of frequency above 20 kHz is cal...
Remote Control using DTMF – Circuit Schematic
Remote Control using DTMF
Here is a circuit of a remote control unit which makes use of the radio frequency signals to control various electrical appliances. This remote control unit has...
Telephone Remote control – Circuit Schematic
Telephone Remote control
Here is a teleremote circuit which enables switching on and off of appliances through telephone lines. It can be used to switch appliances from any distance, ov...
VHF remote control – Circuit Schematic
VHF remote control
A few designs for remote control switches, using VG40T and VG40R remote control pair, are shown here. The miniature transmitter module shown in Fig. 1, which j...
TV remote control Jamming circuit – Circuit Schematic
TV remote control Jamming circuit
Just point this small device at the TV and the remote gets jammed . The circuit is self explanatory . 555 is wired as an astable multivibrator for a frequency...
Remote control ultrasonic switch – Circuit Schematic
Remote control ultrasonic switch
C ircuit of a new type of remote control switch is described here. This circuit functions with inaudible (ultrasonic) sound. Sound of frequency up to 20 kHz is ...