News and analysis on China's progress in developing a sovereign digital currency, including the latest trials and its potential impact on the global financial system.

A compact GPS + GSM tracker using Neo-6M, SIM800L, and Raspberry Pi Pico/Pico W, powered by the GeoLinker library. Supports real-time GNSS tracking, cloud uploads, offline data buffering, and visual ...

About An IoT-based alcohol detection and engine locking system using Arduino, ESP32, fingerprint sensor, and GSM/GPS modules.