Summary:
- This article is about modifying a Qingping air quality monitor to access its data locally using MQTT, a popular messaging protocol for the Internet of Things (IoT).
- The author explains how they reverse-engineered the monitor's firmware to understand how it communicates and then created a custom firmware that allows the device to send its air quality data to a local MQTT broker.
- By making this modification, the user can access the monitor's data without relying on the manufacturer's cloud service, which provides more control and privacy over the device's functionality.