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Dave Jones EEVblog
EEVblog
/ Arduino-IR-TX-NEC
Last active
January 25, 2023 20:59
A simple Arduino driver for the NEC (Japanese) Infrared IR protocol. Drive an IR LED direct with your own code.
This is a direct pin bit-bang approach, so beware about interrupts and timing difference between hardware. Feel free to use hardware PWM to generate the carrier frequency if you want better accuracy.
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| //***************************************** | |
| // NEC (Japanese) Infrared code sending library for the Arduino | |
| // Send a standard NEC 4 byte protocol direct to an IR LED on the define pin | |
| // Assumes an IR LED connected on I/O pin to ground, or equivalent driver. | |
| // Tested on a Freetronics Eleven Uno compatible | |
| // Written by David L. Jones www.eevblog.com | |
| // Youtube video explaining this code: http://www.youtube.com/watch?v=BUvFGTxZBG8 | |
| // License: Creative Commons CC BY | |
| //***************************************** |