Raspberry and Radxa
The panel presents the same controls, while the GPIO mapping is specific to the board.
Switch outputs and confirm their state
Raspberry Pi & Radxa — the controls are shared; GPIO mapping is board-specific.
1 Choose the correct relay channel and press ON/OFF. 2 Check the reported state and connected equipment. 3 RESET sends a timed pulse on its separate output; it does not reboot the board. At startup the configured outputs initialize LOW. The display should follow reported GPIO state rather than remember an old ON click. HIGH/LOW and a relay physically energized/de-energized are not always the same: active-low relay modules invert that behavior. Use the pin mapping and pulse specification for your actual board; a diagram for another model is not interchangeable.
Use a relay channel
- Identify the correct board-specific output and connected relay interface.
- Press ON or OFF for Relay 1, 2, 3 or 4.
- Check SYSTEM STATUS and the actual connected equipment.
ON requests the configured GPIO HIGH state; OFF requests LOW. Whether that means a physical relay energizes depends on its active-high/active-low interface. The indicator should follow the reported output state, not merely remember the last button pressed. Startup initializes the configured relay outputs LOW; do not expect a previous ON selection to survive power-up.
RESET
The separate Reset control sends a timed pulse and then returns the output LOW. It is a pulse for equipment wired to that output, not a software reboot button. Use the board-specific wiring/pulse specification for your installation.
GPIO is a control signal, not a power supply for a relay coil or load. Use a suitable interface and the correct board pin mapping. Ask Julliano for the wiring details if they were not supplied with your installation.