Technical Tutorial

Why should EMC design start from the PCB stage? Numerous product certification failure cases show that over 70% of EMC problems in the % series stem from design flaws in the PCB layout and routing stage. The cost of remediating these issues with external filters after mass production is often more than 10 times the cost of prevention during the design phase. This article shares key EMC design principles summarized by the TIGLIC engineering team based on years of mass production experience. I. Ground Plane Design: A continuous and complete ground plane is the most effective means of suppressing EMI. A 4-layer board structure (signal layer-ground layer-power layer-signal layer) is recommended to ensure ground plane coverage...

Introduction to the MQTT Protocol: MQTT (Message Queuing Telemetry Transport) is the most widely used lightweight publish-subscribe messaging protocol in the IoT field, particularly suitable for embedded environments with limited bandwidth and unstable networks. This tutorial will use the TIGLIC TG-MCU series controller to report sensor data to the Alibaba Cloud IoT platform via the MQTT protocol. Development Environment Preparation: TIGLIC TG-MCU100 controller (Cortex-M4 core), Alibaba Cloud IoT platform account (free quota supports 1 million messages/month), Kei...

Hardware Preparation: This tutorial uses the TIGLIC TG-WL200 Wi-Fi module as an example, guiding you through the entire process from unpacking to successfully connecting to the router and sending an HTTP request. Required materials: TG-WL200 module × 1, USB to TTL debugging cable × 1, breadboard × 1, DuPont wires (several). Step 1: Pin Connections TG-WL200 Pins: USB-TTL Module VCC ----------> 3.3V GND ----------> G...