Graylogix Wiki Blog

 Ever built a brilliant IoT project, only to realize it's useless the moment you step away from your home router? Whether it's a remote weather station, a GPS vehicle tracker, or an industrial sensor, Wi-Fi has its limits. Enter the Quectel EC200U-CN TTL Modem . This isn't just another GSM module; it’s a high-speed LTE Cat 1 powerhouse designed specifically for the modern maker. Why it’s a game-changer for your favorite boards: For Arduino Users: It operates on a TTL interface. No complex level shifting required—just plug, play, and start sending SMS or data packets. For ESP32 Fans: Pair the dual-core power of the ESP32 with 4G speeds. Perfect for streaming data or hosting mini-web servers in the middle of a field. For Raspberry Pi Devs: Use it as a reliable failover internet source or for remote SSH access via the cellular network. The "Graylogix" Edge: This specific breakout makes the EC200U-CN accessible. With robust power management and signal stability, y...

 Are you still relying on 2G modules for your tracking projects? With 2G networks phasing out globally, it’s time to switch to 4G LTE Cat 1. The SIM-A7670C-MNNV is a game-changer for makers and industrial engineers alike. Unlike standard modules, this version integrates a high-sensitivity GPS and a user-friendly TTL interface. Whether you are building a real-time vehicle tracker or a remote weather station, this module offers: 4G Connectivity: Fast, reliable, and future-proof. Integrated GPS: No need for extra boards; get location data directly. Plug & Play TTL: Works seamlessly with Arduino, ESP32, and Raspberry Pi. Check out the full specs and get yours here: https://www.graylogix.in/product/sim-a7670c-mnnv-ttl-modem-with-gps