SparkFun has released a new air quality multi-sensor board, the Indoor Air Quality Combo Sensor, which integrates the SCD41 and SEN55 sensors from ...

Sensors are devices that detect and quantify physical aspects of the world around us. The measurement can either be read directly or converted to a signal for processing by electrical, hydraulic ...

A command-line tool and library for converting ASCII-art diagrams into nice SVG circuit schematics.

The project uses an ESP32, RFID reader (MFRC522), and OLED display to create an attendance system. It sends RFID card IDs to a server via HTTP for tracking and logging.