ESP-NOW with ESP32 EXPLAINED: Easiest Wireless Communication Between Boards (ESP8266 Compatible)

ESP-NOW is a fast connectionless communication protocol developed by Espressif that features short packet transmission and allows multiple boards to exchange data without using Wi-Fi.

Learn how to establish a two-way communication between two ESP32 boards using ESP-NOW. As an example, two ESP32 boards will exchange sensor readings (with a range in open field up to 220 meters ~ 722 feet).

This protocol also works with the ESP8266 NodeMCU board and we've tested the communication range between the two boards up to 140 meters (approximately 459 feet) in open field. In this experiment both ESP8266 on-board antennas were pointing to each other.

Like my page on Facebook:
Follow me on twitter:

Subscribe for more projects like this!

#ESP32 #ESP8266 #IoT #Arduino

[onboard]

How many esp now videos have I watched now... think you are the only one that actually says how to send data.. thanks. :)

[wimalmanage]

‌Thanks a lot Rui. Happy to see a person like you. Your site is very interesting. I learned lot from you. Wish you all the best.

[jaynottelling]

Espnow is great, I use it for my greenhouse sensors as they don't get WiFi. The hardest part I found was getting the data to my MQTT server while still listening for espnow data. I settled storing 10 readings, restart with WiFi squirt the data and repeat. I'd be very happy if you could do a follow up video showing a better way than I managed

[Corgitronics]

Great timing! I was just going to look into that for a project I'm hoping to start soon.
Looking forward to the next video on this.

[kimoymilo]

Amazing videos Rui, do you have a video about bluetooh low energy using esp32?

[KevCoLabs]

Thank you for explaining this concisely and providing the code in your demo so we can experiment with it. Very much appreciated.

[tinkmarshino]

very interesting I just stumbled on to your site by accident but I am rather glad I did.. I have been wanting to play around with my esp boards but just haven't really had the time to investigate them much.. I just popped onto your site and found that this is the place to come.. so I have subed up and will be pursuing your sites and gleaning all of your teaching very soon.. thanks for sharing what you have learned.. carry on..

[muratturel]

Thanks for all your videos that have NO crazy shity music on the background.

[bobbydowngrades]

Bluetooth does the same thing.
SPP profile is both fast and reliable.
You can setup a larger network with Bluetooth EDR and the speed of transmission is instant for a distance of say 30 meters through multiple walls.
Not sure why so many new wireless types are being made when we have had Bluetooth 2.1 for so long.
But fair play for making a video to show people and help publicise ESP.

[WistrelChianti]

Thanks! Very clear overview and explanation and nice test results. Out of interest, does ESPNOW work as an addition to wifi and bluetooth? Could all 3 protocols/radios be active at once? So for example, could I send control commands to an ESP32 via bluetooth, receive telemetry via wifi, and have it communicate with other ESP32's via ESPNOW all at the same time?

[omnianti]

mate you get a 12% hunidity diference betwwen the ten centineter of your desktop

[FilmFactry]

Absolutely excellent. So, I haven't looked at the code yet. So, the incoming data, sensor data, on the receiver is just a variable? Can't wait to try this.

[ziomalZparafii]

What a huge difference on humidity from both sensors.

[cometmace]

Exactly the information I need for my project. Thank you.

[krishnatiwari]

Great video, but it could be much helpful if you showed connections of wire and the things to buy in description

[TJenga]

I was trying to change the code to add about 4 push buttons to change 4 leds when pressed in addition to the sensor readings. Would you consider making a video over that?

[viniciusnoyoutube]

Please, make a example of a remote control using ESP-Now.

[woolfy]

That is still beyond what my brain can handle but its interesting! What brand ESP32 boards do you recommend?

[raymondmichael]

Two years latter, do you have a part two for this?

[justinanderson]

Does this have to come from github? I have a “simple esp now connection.h” in IDE but no espnow.