#171

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: github.com/Sen...
Video about Phototransistors & -diodes: • Photodiode vs Phototra...
IR code databases: irdb.tk/ , github.com/pro...
IR Receivers: s.click.aliexpr...
IR Sensor: bit.ly/2BdXEEJ
IR LED & Photodiodes: bit.ly/2BcRd4G
IR LED & Photodiodes: s.click.aliexpr...
Reflective IR sensors: s.click.aliexpr...
ESP32: bit.ly/2sOMR3E
Arduino UNO Clone: bit.ly/2tJE9Af
Interesting ESP8266 IR/MQTT project: github.com/enc...
Supporting Material and Blog Page: www.sensorsiot.org
Github: www.github.com...
If you want to support the channel and buy from Banggood use this link to start your shopping: bit.ly/2jAQEf4 (no additional charges for you)
Official Wemos Store: s.click.aliexpr...
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