#172

Today we will discover a hidden feature to connect two or more ESP32s or ESP8266s directly to each other: ESP-now. It is much faster and more energy efficient. And we will compare it to LoRa (RFM95 and Arduino Pro Mini.

Espressif gave us this possibility and, because it is so fast, they called it ESPnow. And it also works in the Arduino IDE.
In this video, we will
Try to understand the difference between the standard ESP mode and ESPnow
Build a working ESPnow connection for two ESP8266
Check-out the transmission speed and
Compare this speed with the speed if we connect the ESP to the internet
Compare the Energy hunger of both modes
And finally, compare the ESPs with another technology: LoRa

Links:
Sketches: https://github.com/SensorsIot/ESP-Now...
ESP-Now example: https://github.com/HarringayMakerSpac...
Not-rebooting gateway: https://github.com/HarringayMakerSpac...
Online Battery life calculator: http://battery-life.of-things.de/batt...
ESP32 board: http://bit.ly/2sOMR3E


Supporting Material and Blog Page: http://www.sensorsiot.org
Github: https://www.github.com/sensorsiot
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