Infrared signal band frequency ranges from 430 THz to 300 GHz. This frequency is then divided in to divisions. Such as near infrared, short wavelength infrared, mid wave length infrared, long wavelength infrared and finally FIR(far infrared) division. Far infrared is most utilized in home appliances such as TV remotes, vehicle audio system etc. Our IR sensor pair used in the project falls in far infrared division.
Infrared transmitter in the keypad transmits the infrared signal at 38 khz frequency. At the receiver side i have tsop1738 ir receiver. Tsop1738 infrared receiver receives the infrared signals which are transmitted by transmitter at 38 khz frequency. Tsop1738 not not receives signal it also decodes the data present in the transmitted signal and then outputs the data.
Arduino IR remote project – Working principle
Arduino IR remote library
Arduino ir library working
Arduino infrared project – circuit diagram
- LCD RS pin to digital pin 8
- LCD Enable pin to digital pin 9
- LCD D4 pin to digital pin 4
- LCD D5 pin to digital pin 5
- LCD D6 pin to digital pin 6
- LCD D7 pin to digital pin 7
- LCD R/W pin to ground
For your easy i made the circuit diagram of the stand alone 16×2 lcd interface with arduino uno for this arduino infrared project. Circuit diagram is below
Watch the Project Video Here