Connecting to Easy LoRa Gateway - IoTThinks/EasyLoraGateway GitHub Wiki

1. UART USB

This UART USB is used to link ESP32 board to USB of laptop.

• We can buy one at http://www.proe.vn/cp2102-usb-to-ttl-uart-full_p1_1-1_2-1_3-744_4-845_9-2_11-20_12-1_13-8.html OR http://hshop.vn/products/mach-chuyen-usb-uart-cp2102
• You need to install the driver (based on your operating system) at https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers.
• We need to weld the RTS pin. So do it right. Without RTS pin, you can not upload the sketch to the board.

2. Easy LoRa board - CloudFermi

This is the main board.

• We need those pins covered in RED.
• Pin I34 is an available input pin for optional sensor.

3. Connecting Easy LoRa board to UART USB

Now, connect them right:

• UART USB TXD to Easy Lora RXD. DO IT RIGHT!!!
• UART USB RXD to Easy Lora TXD. DO IT RIGHT!!!
• UART USB GND to Easy Lora (-).
• UART USB 5V to Easy Lora 5V.
• UART USB DTR/RTS to Easy Lora DTR.
• UART USB RTS to Easy Lora RTS. You need to weld an extra pin in UART USB.
• Connect the antenna to the chip LoRRa in the Easy LoRa board.

From top

From other side

4. Connect USB UART to USB port of laptop

Now, plug the UART USB to the USB port of the laptop. You should see some "light" in both UART USB and Easy LoRa board.

5. External power adapter

For stable operation, we should use a 5V adapter with round output jack.

• LoRa, WiFi and BLE can take more than 150mA during operation (which more than what USB port can provide). It's strongly recommended to power the board by an external 5V adapter.
• You can buy one at http://hshop.vn/products/nguon-adapter-dc-5v-2a
• DO NOT put in the 5V of the board to UART USB and plug in the 5V adapter at the same time. Unplug the 5V pin to UART USB and plug in the 5V adapter.