Little Bird
Mini 3A Relay Unit
Description RELAY, as its namesake, is a M5Unit that implenments a Relay functions. Relay can be used as an electrically operated switch, uses an electrom...
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Description
RELAY, as its namesake, is a M5Unit that implenments a Relay functions. Relay can be used as an electrically operated switch, uses an electromagnet to mechanically operate a switch,to where it is necessary to control a large power load circuit by a separate low-power signal, like a digital signal output from a mircoprocessor. Up to 30V DC and 220V AC.
There are 3 pins named: ON, OFF, COM. You can program to make COM connect to ON or OFF, just by high and low out put of a digital GPIO.
Product Features
- Single-BUS control
- Up to 3A @ 30 V DC or 220 V AC
- Software Development Platform: Arduino, UIFlow(Blockly,Python)
- Two Lego-compatible holes
Kit includes
- 1x RELAY Unit
- 1x Grove Cable
- 1x 3.96 soket
Application
- Remote control of high-power appliances, such as refrigerators, Air Conditioners, TVs, etc.
Learn
Example
1. Arduino IDE
The code below is incomplete. To get complete code, please click here.
#include <M5Stack.h> void setup() { M5.begin(); M5.Lcd.clear(BLACK); M5.Lcd.setTextFont(4); M5.Lcd.setTextColor(YELLOW, BLACK); //disable the speak noise dacWrite(25, 0); pinMode(26, OUTPUT);// RELAY Pin setting } void loop(void) { digitalWrite(26, HIGH);// RELAY Unit work delay(500); digitalWrite(26, LOW);// RELAY Unit stop work delay(500); } 2. UIFlow
To get complete code, please click here.
More information
Schematic
PinMap
M5Core(GROVE B)GPIO36GPIO265VGNDRELAY Unit/RELAY Controlling Pin5VGND
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- Grove
- Grove is a standardised 4-pin plug-in connector system for sensors and modules that avoids soldering and jumper wires, with different cable types carrying I2C, UART, analogue or digital signals. When a product is Grove-compatible it can be quicker to connect supported modules, provided the connector type, signal and voltage all match.
- IDE
- Short for Integrated Development Environment, a program used to write, run and manage code. It matters because some learners prefer a traditional coding workspace instead of a guided notebook-style lesson.
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