Gorillacell Module 064: Relay
Table of Contents
Relay is an electrically controlled switch that allows a low-power signal to control a higher-power circuit.
The relay operates using the electromagnetic principle: when a logic HIGH (1) signal is applied to the relay’s control pin, it activates an internal electromagnet, which moves the switch arm to connect the COMMON (COM) pin from the NORMALLY CLOSED (NC) pin to the NORMALLY OPEN (NO) pin. When a logic LOW (0) signal is applied, the electromagnet is deactivated, and the switch arm returns, reconnecting the COMMON pin to the NORMALLY CLOSED pin.
The Gorillacell ESP32 Development Kit includes one (1) Relay module for experimenting with electrically controlled switching, automation, and high-power load control projects.
BASIC INFORMATION
| Device | Category | Interface | Chipset | Description |
|---|---|---|---|---|
| Output | Motor Cell | Digital | - | - |
PINOUT
It has 3 pins which are
- G - for the ground pin,
- V - for the supply voltage, and
- S - for controlling the Relay module.
Logic 1 - activates the relay.
- Connects COM to NO pins.
Logic 0 - deactivates the relay.
- Connects COM to NC pins.
While the controlled terminals are:
- NO - for the Normally-Open pin.
- COM - for the Common pin.
- NC - for the Normally-Close pin.
