‘MicroPython for ESP32 with support for 4MB of psRAM’

Thanks to Jason H. for sending this in and letting us know about this handy repo:

This repository can be used to build MicroPython for ESP32 boards/modules with psRAM as well as for ESP32 boards/modules without psRAM.

Building on Linux, MacOS and Windows (including Linux Subsystem on Windows 10) is supported.

MicroPython works great on ESP32, but the most serious issue is still (as on most other MicroPython boards) limited amount of free memory.
This repository contains all the tools and sources necessary to build working MicroPython firmware which can fully use the advantages of 4MB (or more) of psRAM.
It is huge difference between MicroPython running with less than 100KB of free memory and running with 4MB of free memory.

Read more.