1-Channel Relay

The 1-Channel Relay is a board I/O module in the LabWired part catalog. Its catalog type is relay-1ch. It connects to the MCU over GPIO. The catalog gives a supply range of 4.5–5.5 V. It has 6 pins. This part is its pins. There is no separate device model because the MCU’s own GPIO/PWM/ADC model already is the simulation.

From the catalog: ProtoSupplies 5V × 1 (43 × 18 × 20 mm): logic LOW on IN energizes the coil and closes COM–NO. boardIoActiveHigh is false so the GPIO binding matches that. COM/NO/NC are passive load pads (same pin-io honesty as relay-4ch, which leaves active-high as the default). The contact itself is not a switched device model.

Key facts

Category	Board I/O modules
Catalog type	relay-1ch
Interface	GPIO
Supply range	4.5–5.5 V
Pins	6

What LabWired simulates

1-Channel Relay pinout

• Power: VCC, GND
• GPIO: IN
• Other signals: COM, NO, NC

How to simulate the 1-Channel Relay in LabWired

1. Open the Playground at app.labwired.com and place an MCU board.
2. Add the 1-Channel Relay (catalog type relay-1ch).
3. Connect VCC and GND to the supply and ground of the board. Use a supply inside the catalog range of 4.5–5.5 V.
4. Connect IN to a free GPIO pin.
5. Connect COM, NO and NC as your circuit needs.
6. Run the firmware. It reads and drives these pins through the GPIO, PWM and ADC models of the MCU. The part has no separate device model.

Related Board I/O modules

• 2-Channel Relay GPIO · Pins only, by design
• Water Level Sensor GPIO · Pins only, by design
• 28BYJ-48 Stepper GPIO · Built from the datasheet
• Vibration Sensor GPIO · Pins only, by design
• 4-Channel Relay GPIO · Pins only, by design
• ULN2003 / 28BYJ-48 stepper GPIO · Built from the datasheet
• 7-Segment Display (single digit) GPIO · Built from the datasheet
• TTP223 Touch Sensor GPIO · Pins only, by design

All Board I/O modules · All parts

No manufacturer datasheet is indexed for this part yet, so none is linked here.