remote control


Posted on Feb 5, 2014

Every key pad button generates 5 bit binary code and IC1 sends this code to the IR leds through D1 and D2 diodes. Code is shaped from 6 pulses with 5 gaps. Pulse position modulation PPM technique is used for transferring data. Data information occurs at gaps. For logic 0, long gap, for logic 1 short gap is generated. SL490 includes an auto sta


remote control
Click here to download the full size of the above Circuit.

nd-by circuitry. When the buttons are not used for a while, IC will swich to stand-by mode and stand by current will be 6uA.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Casio cable for PC
Fundamental-frequency-crystal-oscillator
light weight data capture and signal generator
Frequency to voltage converter using LM331
Circuit Project: Wireless Doorbell
Wireless/Wii Hack for SNES and NES Controllers
SV3 Radio Magnadyne Radio
Connecting the PICAXE-08 Microcontrller to other Components
Low frequency oscillation circuit
Automatic volume change with the ambient noise control circuit
Fan automatic control circuit



Top