TL;DR
Harald Kreuzer has created a DIY weather station and air quality monitor using the ESP32-P4 microcontroller. The setup includes a 10.1-inch dashboard display and a Sensirion SEN66 sensor to measure particulate matter, carbon dioxide (CO2), volatile organic compounds (VOCs), and nitrogen oxides (NOX). It connects wirelessly to LoRa (Long Range) and ESP-NOW sensors, making it versatile for gathering environmental data.