#171 Arduino Guide to Infrared (IR) Communication also for ESP32 and ESP8266

Everybody talks about Bluetooth and Wi-Fi. But one heavily used technology is often forgotten: Infrared. Today we will remember this technology and bring it into the today's world of microcontrollers like ESP32 and ESP8266 and to technologies like MQTT and node-red. And as usual, we will dig a little into the basics.
Today
- We will use infrared rays to detect objects
- And find a way to make the detector immune against interference from daylight
- We will use standard photodiodes as well as IR receivers to detect IR signals and see the difference
- Then we will use IR instead of LoRa or Wi-Fi to transport information over the air
- We will enable an Arduino UNO to receive, learn, and send IR codes
- We will port the IR library to the ESP32 and implement MQTT
- Finally, we will build a device which can control our home appliances like TVs or Lights
- This device should be able to receive signals from an IR remote controller and transfer them via MQTT to Node-Red
Links:
Sketches:
Video about Phototransistors & -diodes:
IR code databases: / ,
IR Receivers:
IR Sensor:
IR LED & Photodiodes:
IR LED & Photodiodes:
Reflective IR sensors:
ESP32:
Arduino UNO Clone:
Interesting ESP8266 IR/MQTT project:
Supporting Material and Blog Page:
Github:
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