The tiny upload nodes are running on ESP8266 or ESP32 and are connected to several sensors which are uploading data at regular intervals to the respective tables of the database. The huge campus is ...

ESP32 mini board or ESP8266 Wemos D1 mini or similar MPU9250 SPI or MPU6050 I2C gyro (GY-88, GY-91, GY-521 or similar) PDB with 5V BEC Buzzer and some electronic components (optional).

One of the most common issues is the inability of Windows 11/10 to open a JPG or PNG image file. It’s a common problem that tends to pop-up now and again. Just try and live with the fact that ...