Summary of Control TV With Any Phone (Even Phones Without IR Blaster)
This article details a low-budget project enabling phone control of IR devices via Bluetooth. A smartphone sends commands to an HC-05 module, which communicates with an Arduino Uno to decode and transmit IR signals, effectively extending control range beyond standard IR limitations. The build involves etching a custom PCB for efficiency.
Parts used in the Phone Controlled IR Project:
- Arduino UNO
- HC-05 Bluetooth Module
- IR LED
- IR Receiver
- 2N2222 NPN Transistor
- 470 Ohm Resistor
- 1 Kilo Ohm Resistors (x3)
- Copper Clad Board
- Photo Laser Paper
- Thin Drill Bit (0.8 mm to 1.2 mm)
- Ferric Chloride
- Male Headers
- Female Headers
- Breadboard
- Jumper Wires
- Soldering Iron
- Solder
- Laser Printer
- Non-Metallic Container
- Acetone
- Scissors
Do you want to control your TV and several other gadgets that are IR controlled? Ya but my phone doesn’t support it because it doesn’t have an IR blaster.Don’t worry here a gadget that gives IR control to any phone and the thing it needs is bluetooth!! YES!! bluetooth!! The gadget also increases the range of your control!! As it covers the distance range of bluetooth as well as infrared!! It was made in very less budget and requires some components including arduino uno and bluetooth module! Basically the phone sends signal to HC-05 (bluetooth module) and further bluetooth module sends the characters to arduino’s serial port and arduino sends particular IR signal decoded from your remote!! It works with all TV remotes!!I etched the circuit on PCB to make it more efficient and useful!! Here ‘s a demo video of it but I’ll publish full tutorial on making it soon..
Step 1: Libraries
You’ll require to install IrLib master library that is attached below. Unzip it and then copy the files to libraries folder of arduino IDE. Either you can install it by directly opening IDE and under sketches install zipped libraries.
Step 2: Things Required
You’ll need :-
- Arduino UNO
- HC-05 (bluetooth module)
- IR L.E.D
- IR Receiver
- 2N2222 NPN Transistor
- 470 ohms Resistor
- 1 Kilo ohms resistor X 3 (Either you can use 1 kilo ohms resistor and 2 kilo ohms resistor)
- Copper Clad Board
- Photo Laser Paper
- Thin Drill Bit usually 0.8 mm to 1.2 mm
- Printer Cable (Arduino Cable)
- Ferric Chloride
- Male Headers
- Female Headers
- Breadboard
- Jumper Wires
- Soldering Iron
- Solder
- Laser Printer
- Non-Metallic Container
- Acetone
- Scissors
Step 3: Receiving Raw Signals
Take IR receiver and connect its :-
- Signal —— Digital Pin 11
- Gnd —— Gnd
- Vcc —— 5v
And then open Irrecvdump example from IrLib master library and the code is attached below also!!
Upload the code and serial monitor.
Step 4: Decoding
After opening the serial monitor press any button of your TV remote in front of IR receiver.You’ll see the decoded data on the serial monitor.Don’t close the serial monitor until you note down data of all buttons of your remote.
Step 5: Getting Useful Data
Note down the value and the number in bits mentioned in serial monitor for every unique button.See pictures and screenshots for help.Value might be in numbers or alphabets like A90,2CE9 etc. And the value in bits be 12,15 etc.Note only the ones which you want to use via your phone means only the most useful ones.
Step 6: Circuit (Please Ignore Resistance Values in Fritzing Image)
Please refer to circuit in the pictures above,If you are using Arduino Leonardo then connect the resistor wire to Digital Pin 11.Sorry because the resistance value is not 220 ohms it is 470 ohms with transistor and all other are of 1 kilo ohms resistance.Collect all required things and get on to work again.
Read more: Control TV With Any Phone (Even Phones Without IR Blaster)
- How does the gadget increase the control range?
The device covers the distance range of both Bluetooth and infrared signals. - Can this project work with phones that do not have an IR blaster?
Yes, it uses Bluetooth to send signals from any phone to the gadget. - What library is required for the Arduino code?
You must install the IrLib master library. - Which digital pin connects to the IR receiver signal?
The signal wire connects to Digital Pin 11. - How do you obtain the necessary codes for TV buttons?
Open the Irrecvdump example, press remote buttons while monitoring the serial monitor, and note the value and bit count. - What is the correct resistor value for the transistor circuit?
The resistance with the transistor is 470 ohms, while others are 1 kilo ohm. - Does this system work with all TV remotes?
Yes, the text states it works with all TV remotes. - Why was the circuit etched on a PCB?
Etching the circuit makes the project more efficient and useful.
