Luckfox Core1106 RV1106G2 Smart 86 Box Development Board w/o WiFi

The board runs a custom Buildroot Linux distribution provided by Luckfox. Development typically involves setting up a cross-compilation toolchain on your host PC. You write applications in C, C++, or Python, cross-compile them, and then transfer the binaries to the board via SCP over Ethernet. The official Luckfox Wiki provides SDKs, kernel source, and documentation for flashing the system image and building custom applications. You can also access the board via SSH for command-line management and debugging.

The RS485 interface is accessed via a dedicated terminal block on the board, typically labeled A and B. You must enable the corresponding UART device (e.g., /dev/ttyS2) in the device tree or software configuration. For communication, use a standard Linux serial library (like PySerial in Python) to open the port, set the correct baud rate (common rates are 9600, 19200, 115200), parity, and stop bits to match your slave devices (e.g., Modbus RTU sensors). The built-in isolation protects the board, but you should still use twisted-pair cabling and proper termination for reliable long-distance communication.

Yes, the relays are controlled via GPIO lines exposed to the Linux userspace. You control them by writing to specific files in the /sys/class/gpio directory (e.g., echo out > direction, echo 1 > value). The exact GPIO numbers are defined in the board's documentation. The relays are optocoupler-isolated, separating the low-voltage logic from the switched load. While the exact current rating should be verified in the datasheet, typical relays on such boards handle 5-10A at 250VAC or 30VDC. Always ensure your load does not exceed these ratings and consider using an external contactor for higher-power devices.

The board requires a stable 5V DC power supply, delivered via the USB Type-C port. The typical operating current ranges from 500mA to 700mA, so your power adapter should provide at least 2A (10W) to ensure stable operation, especially when driving the display, relays, and connected peripherals. Use a high-quality USB-C cable capable of carrying sufficient current. For permanent installations, a reliable 5V wall adapter or a Power-over-Ethernet (PoE) splitter that outputs 5V can be used, as the board itself does not have built-in PoE.