2024-05-05

[public] 133K views, 26.1K likes, dislikes audio only

GreatScott!

Elektor Offer: Enjoy 50% off an annual subscription to Elektor GOLD (print + digital) or Elektor GREEN (digital). This offer is available in English, German, French, and Dutch. Valid until May 31, 2024.

https://www.elektormagazine.com/greatscott-elektor-offer-24

Special Offer for the LiPo Supercharger: Valid until May 31, 2024

https://www.elektormagazine.com/greatscott-lipo-2024

Previous video: /youtube/video/MzxBBXpgwrE

ESP32 WiFi video: /youtube/video/ZAqNKaX3LQ0

ESP32 Bluetooth video: /youtube/video/2SWj49ugr3A

nRF24 videos: /youtube/video/SZYwvvh6m-s /youtube/video/Nd_Kc7BXa54

433MHz RF Module video: /youtube/video/PKowvbnIxso

LoRa videos: /youtube/video/nP6YuwNVoPU /youtube/video/ItZwa1AdrpU /youtube/video/2YJHcGQnpAk

Facebook: https://www.facebook.com/greatscottlab

Twitter: https://twitter.com/GreatScottLab

Instagram: https://www.instagram.com/great.scott.lab/

TikTok: https://www.tiktok.com/@greatscottlab

Discord: https://discord.gg/zuAvkAuhsY

Support me for more videos: https://www.patreon.com/GreatScott?ty=h

Wireless communication is awesome! Right? Only problem is that there are many different methods and techniques which all use different frequencies and sometimes require extra hardware. But if you do not want to spend extra money on hardware, then the ESP microcontroller boards offer WiFi and Bluetooth. Those only come with a "short" range though. So in this video I will test ESP-NOW which is a wireless communication method that can be used with the ESP boards. It gets rid of many disadvantages while not needing extra hardware. So let's see what it can do and ultimately push it to the limit by building a crude Walkie-Talkie. Let's get started!

Websites shown/used in the video:

https://www.elektormagazine.com/articles/diy-walkie-talkie-based-on-esp-now

https://www.espressif.com/en/solutions/low-power-solutions/esp-now

https://randomnerdtutorials.com/esp-now-esp32-arduino-ide/

Thanks to Elektor for sponsoring this video

0:00 A New Wireless Communication Method?

1:46 Intro

2:53 The Problem with WiFi & BT

4:22 Extra Hardware?

4:33 ESP-NOW Theory

5:10 First Test ESP-NOW

6:20 Range Test ESP-NOW

7:30 Comparison of all Wireless Methods

7:59 Walkie-Talkie Build with ESP-NOW

11:32 Verdict