Devlog #4

Finalizing MCU program

I used the breadboard prototype I had from Devlog #1 to finalize a working version of the ENS160 + AHT21 sensor program on the ESP-01S. I use the Adafruit libraries for these components to extract their readings, and then display it on a scrolling background on my 0.91 inch OLED SSD1306.

This program is the final step before I solder the remaining components onto my PCB, which conveniently arrived as I was on vacation.

It displays the following information:
Line 1: Temp (deg C), Temp (deg F), Humidity (relative %)
Line 2: Air Quality Index (AQI), Total Volatile Organic Compounds (ppb - TVOC), eCO2 (ppm - estimated CO2)