Graylogix Wiki Blog

  Imagine a Raspberry Pi that doesn’t need to hunt for a Wi-Fi password. Imagine a project that works in the middle of a farm, inside a moving vehicle, or at a remote weather station. As makers and engineers, we love the Raspberry Pi for its versatility. But let’s face it: its reliance on Wi-Fi or Ethernet is a leash. Cut that leash, and your Pi becomes truly powerful. Enter the Quectel EC200U 4G LTE USB Modem. I recently explored this industrial-grade communication module, and here is why it’s becoming a staple for serious Raspberry Pi enthusiasts: 1. True Remote Independence The EC200U isn't just a dongle; it's a gateway. It supports LTE-FDD, LTE-TDD, and GSM/GPRS. This means your Pi can upload telemetry data, send alerts, or host a web server from virtually anywhere with cell service. No more "Out of Range" errors. 2. Plug-and-Play Simplicity for Linux One of the biggest headaches with cellular modems is driver compatibility. The Quectel EC200U is designed with L...

 Are you tired of the tangled mess of jumper wires every time you try to program an Arduino Pro Mini or debug an ESP32? We’ve all been there—holding a fragile module in place with one hand while praying the connection doesn't break. If you are into electronics, IoT, or embedded systems, the connection between your computer and your microcontroller is the lifeline of your project. Today, we’re looking at a tool that cleans up that mess and makes serial communication effortless: the Graylogix USB to TTL Cable (CP2102) . Why the Hype? Most USB-to-TTL converters come as small breakout boards. They are great, but they require female-to-female jumper wires, which can be loose, unreliable, and messy. The Graylogix CP2102 Cable encapsulates the reliable Silicon Labs CP2102 chip inside the USB connector itself, giving you a robust, 1.5-meter long cable with direct wire leads (TX, RX, GND, 5V). It’s plug-and-play simplicity at its best. Why It’s a Game Changer for Your Boards: ⚡ For Arduin...

 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

Introduction Total Dissolved Solids (TDS) is a key indicator of water cleanliness, representing the concentration of dissolved minerals, salts, and metals. While handheld TDS pens are common, they don’t allow for automation or long-term data logging. That’s where the Graylogix Analog TDS Sensor comes in. Why Choose This Sensor? Plug-and-Play Simplicity: Designed for Arduino, it requires no soldering and works right out of the box. Wide Compatibility: Supports 3.3V to 5.5V input, making it compatible with Arduino, ESP32, and Raspberry Pi. Durable & Stable: Features a waterproof probe and an AC excitation source that prevents probe polarization, extending its lifespan significantly. Real-Time Monitoring: Unlike manual pens, this sensor can stay submerged for continuous data tracking. Applications Hydroponics: Ensure your plants get the exact nutrient concentration they need. Aquariums: Keep your aquatic life safe by monitoring mineral spikes. Home Automation: Build your own s...

Revolutionize Your Automation Projects with the Graylogix IoT Box. The Ultimate All-in-One IoT Solution Are you tired of messy wiring and unstable connections in your IoT prototypes? Say hello to the Graylogix IoT Box . This open-source powerhouse combines an Arduino Nano , a GSM SIM800C module , and 2 on-board relays into one compact, rugged enclosure. Why it’s a must-have: Plug-and-Play: Includes a 1000mAh battery and built-in charging via USB. Remote Control: Trigger relays and monitor sensors from anywhere in the world via SMS or GPRS. Industrial Ready: Perfect for motor starters, temperature monitoring systems, and data loggers. White Labeling: Ideal for developers looking to move from prototype to a market-ready product quickly. Technical Specs: Internal battery backup (1000 mAh). Dedicated I/O pins (AD0 to AD3) for external sensors. Status LEDs for Network, Charging, and Testing. Read more and get yours here: Graylogix IoT Box Product Page