IR TV Remote

Basic example using a microcontroller as an IR blaster. Mine are from Adafruit.

Getting started

• Install the Arduino IDE, and the

specific library for your microcontroller.

• Connect an IR LED to one of the output pins, with an appropriate in-series

resistor wire to GND. Using 3.3V output voltage, 1.2V drop over the IR LED, and 20mA current: V=I*R => R=V/I = (3.3-1.2)/(20/1000) = 105Ω ~= 100Ω.

• Update the project for your TV:

• Define IR_SEND_PIN to be the output pin you're using.

• Define IR_ADDRESS for the TV you are using.

• Define IR_REPEATS if needed for your TV.

• Define IR_REPEATS if needed for your TV.

• Define IR_NUMBER_OF_BITS as appropriate for your TV.

• Define IR_MIN_DELAY_MS as appropriate for your TV.

• Build and flash to the device.

• Open the serial monitor and type one or more two-digit hex codes to send.

For example, type 20 to send hex code 0x20 (menu, see admiral.h), or 121212 to send 0x12 (channel down) three times.