The ESP32 is a supported platforms this support is built upon the Espressif ESP8266-RTOS-SDK the following pages provide information on building devices based on this MCU.
A full list of components which can be used to build an AirMeter.io capable device. Some components are to be chosen from a supported set of options and some are entirely discretional.
Instructions to assemble a development a test device using a breadboard for simplicity. This is intended for development purposes, for production devices permanent & durable methods of connecting the components must be used.
Build firmware from source
How to get the latest source code and build your AirMeter.io firmware for the ESP32 platform.