Heltec WiFi Kit 32 ESP32 module The Heltec WIFI Kit 32 is an interesting little module that integrates a WiFi/MCU SoC and a small OLED display on a single board. If you want to set up the Arduino IDE to work with this device and you’re on macOS, this is for you. This particular ESP32 module has a number of impressive features: 240 MHz processor speed and 4 MB of flash memory.
In this tutorial I’ll go through a simple example of how to get two Arduino Nano devices to talk to one another. Materials You’ll need the following materials. I’ve posted Amazon links just so that you can see the items, but they can be purchased in a variety of locations. Arduino Nano 5V/16 MHz, or equivalent (Amazon) Kuman rRF24L01+PA+LNA, or equivalent (Amazon) About the nRF24L01+ The nRF24L01+ is an appealing device to work with because it packs a lot of functionality on-chip as opposed to having to do it all in software.