Got our ESP32-S2 Feather PCBs in last night, so now we’re putting them together and trying it out. These Mini modules are the perfect size but don’t come with PSRAM so we have to freeze in some CircuitPython modules to make everything fit (the WiFi stack + SSL requires a lot of RAM which is where most of it goes). However, once we did that we whipped up a demo that takes data from the onboard BME280 and battery monitor and sends them over the wifi to adafruit.io for plotting. It just fits into RAM and works a treat. Next up we’ll try out the same code in Arduino – video. // Read more: original article.