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• '''1️⃣ Connect Wio E5 to RainbowLink (UART … '''1️⃣ Connect Wio E5 to RainbowLink (UART A)''' === 2️⃣ Plug RainbowLink into Your PC === * Connect via USB-C cable. * Open '''Device Manager''' to identify COM ports. * You’ll see 4 ports — pick one for UART A (usually lowest COM number). === 3️⃣ Configure Serial Terminal === Use any terminal tool (CoolTerm, PuTTY, Arduino Serial Monitor) and apply: * Baud rate: '''9600''' * Data bits: 8 * Parity: None * Stop bits: 1 * Flow control: None Open the terminal on UART A’s COM port. === 4️⃣ Send AT Commands === Try a basic command: AT You’ll get: +AT: OKe>AT</code> You’ll get: <code>+AT: OK</code>  +
• === 🔌 DFRobot RainbowLink (TEL0185) === * … === 🔌 DFRobot RainbowLink (TEL0185) === * Dual TTL UART channels (A & B) via lever terminals * Built-in power outputs: 3.3V, 5V, 12V (selectable via jumper) * Plug-and-play via USB-C — auto enumerates 4 COM ports * Ideal for ESP32, STM32, LoRa, and GPS modules === 📡 SeeedStudio Wio E5 (STM32WLE5JC) === * Compact Grove-compatible LoRa module * AT command interface over UART * Default baud rate: '''9600''' * Pins: VCC, TX, RX, GND (3.3V logic) * Designed for ultra-low-power IoT applications Designed for ultra-low-power IoT applications  +
• Optional: Use '''UART B''' for dual device … Optional: Use '''UART B''' for dual device setups or console mirroring. === 🎯 Wrap-Up === With your RainbowLink and Wio E5 now speaking over UART, you have a modular way to configure and test LoRaWAN settings — without the hassle of writing firmware for every new device. This setup is perfect for: * Field provisioning of multiple nodes * Remote scripting via serial commands * Debugging LoRa payloads in real time For your next step, consider automating AT commands using Python’s pyserial, or adding a visual GUI for non-technical users.e>, or adding a visual GUI for non-technical users.  +
• You must check out [https://www.pcbway.com … You must check out [https://www.pcbway.com/ PCBWAY f]or ordering PCBs online for cheap! You get 10 good-quality PCBs manufactured and shipped to your doorstep for cheap. You will also get a discount on shipping on your first order. Upload your Gerber files onto [https://www.pcbway.com/ PCBWAY t]o get them manufactured with good quality and quick turnaround time. PCBWay now could provide a complete product solution, from design to enclosure production. Check out their online Gerber viewer function. With reward points, you can get free stuff from their gift shop. Also, check out this useful blog on PCBWay Plugin for KiCad from [https://www.pcbway.com/blog/News/PCBWay_Plug_In_for_KiCad_3ea6219c.html here. Us]ing this plugin, you can directly order PCBs in just one click after completing your design in KiCad.ick after completing your design in KiCad.  +