• Rf Remote Converter

The IR to RF transmitter circuit given here can convert the IR signals from your remote to RF signals to long distances. The circuit given here is a good one for extending the range of your IR remote.Also such systems does not need a line of sight since RF signals are used.

The transmitter is based on a St-TX 01 ASK transmitter IC (IC2).The IR signals falling on IC 1 (TSOP 1738) will be converted to RF signals by IC2 and transmitted through antenna.The transmitter has a power output of 16dBm at 5V supply. The receiver is based on a ST-RX04 ASK receiver IC (IC3).The IC3 receives the transmitted code, decodes it to the original IR code and re transmits through IR LED (D1). The transistor Q1 is used to drive the D1 from the output of the IC3(pin2). Circuit diagram with Parts list. Use a 6V battery with a 1N 4007 series(forward biased) with its positive terminal as power supply for each circuit. Use 20 cm long copper wire for each antenna.

Ranges upto 200m are possible with matching antenna. The capacitor C1 must be rated 10V.

RF Sensor and IR Sensor are very popular sensors, which are used to transmit and receive the data wirelessly and they have a wide range of applications. We have developed many projects using RF sensor like, etc. RF pair consists a Receiver and a transmitter module. We have also developed projects using IR sensor like, etc. And covered its complete working here in this article:.

IR to RF converter circuit can convert IR signal into RF signals and at the same time transmit this to remote location and decode them using a compatible RF receiver. The IR to RF transmitter circuit given here can convert the IR signals from your remote to RF signals to long distances. IR to RF converter circuit.

IR Sensor basically consists a IR LED and a Photodiode. But IR remote has some limitations like low range and it only works in Line of Sight etc. So these limitations can be overcome by converting the IR signal into RF signal. RF signal does not required line of sight and have much better and long range then IR remote.

RF transmitter is a wireless device which can send data to 100 meters or more. This range can be further increased to 500 meter by using a good antenna.

So in this project, we are converting IR signal into RF signal by using TSOP and RF Transmitter & Receiver pair. Components Required:. IR Remote. TSOP1738. RF Pair (433.92 MHz ASK TX and RX). BC557 Transistor. 1k Resistor.

100 ohm Resistor. Breadboard. Connecting Wires. Power supply. 10uf Capacitor Working Explanation: Working of this IR to RF converter circuit is simple, when we press any button on the IR remote then TSOP detect it and send to RF Transmitter and then RF transmitter converts and transmits the signal to RF Receiver. This TX-ASK RF transmitter has Output Power of 4 12 Dbm, depending upon the power supply 3v 12v.

RF ASK Receiver further receives the converted RF signal, decode it and send it to LED through PNP transistor BC557. Now LED will glow according to incoming signal. LED is here for testing purpose and you can test the circuit by using any TV/DVD remote. When we press any button of IR remote, pointing towards TSOP1738, then the LED should blink.

Circuit Diagram: Circuit of this project is very simple. TSOP output pin is connected to data pin of RF transmitter through a 100 OHM Resistor and data pin of RF receiver is connected at the base of BC557 PNP transistor through a 1K resistor.

LED is connected at the collector of transistor. IR Receiver (TSOP1738): TSOP1738 is working here as a IR detector or receiver. TSOP1738 reacts when it receives the IR radiation modulated at 38 KHz and TV/DVD remote generally works at 38 KHz frequency.

Rf Remote Converter

TSOP’s output is active low, means its output is remains HIGH when there is no IR, and becomes low when it detects IR radiation. To know more about TSOP and its working check this project: RF Transmitter and Receiver: RF pair is used for wireless RF communication. There are other RF modules are also available like 3- Pin RF Module, so check their data sheet for proper connections. We here used ASK Hybrid receiver module working on 433 MHz and ASK hybrid transmitter module, shown in below figure. To know more about RF module and its working check this.