rpi-device-sdk

Based on pi4j-v2 Raspberry Pi equipment application SDK. You can use the SDK to create common equipment and control the equipment for base functions easily.

[Note] The current tests only pass on the Raspberry Pi 4B

Device List

• Active Buzzer
• Passive Buzzer
• Button
• LED Light
• Relay
• HC-SR501 PIR Motion Sensor
• SG90 Servo
• L298N DC Motor Driver
• DS18B20
• PCF8591
• HCSR04
• DHT11
• DHT22

The equipment list will be updated continuously.

How to use

Maven

• Add dependency to pom.xml

<dependency>
    <groupId>cn.tpkf.rpi</groupId>
    <artifactId>rpi-device-sdk</artifactId>
    <version>0.0.1</version>
</dependency>

• A simple example

public static void main(String[] args) {
    // Create Pi4J context
    Context context = Pi4J.newAutoContext();
    // Create a new Device Manager
    DeviceManager deviceManager = new DeviceManager(context);
    // Create a new device example LED and blink
    Led led = new Led(deviceManager, "led-4", "LED", BCMEnums.BCM_4);
    led.blink(1, 5, TimeUnit.SECONDS);
    //shutdown led
    led.shutdown();
    //shutdown device manager
    deviceManager.shutdown();
}

More device examples

// Relay, active-high by default
Relay relay = new Relay(deviceManager, "relay-17", "Relay", BCMEnums.BCM_17);
relay.on();
relay.off();

// HC-SR501 PIR motion sensor
HCSr501 pir = new HCSr501(deviceManager, "pir-27", "PIR", BCMEnums.BCM_27,
        false, 10_000L,
        () -> System.out.println("Motion detected"),
        () -> System.out.println("Motion cleared"));
boolean motionDetected = pir.isMotionDetected();

// SG90 servo
SG90Servo servo = new SG90Servo(deviceManager, "servo-18", "Servo", BCMEnums.BCM_18);
servo.center();
servo.setAngle(90);

// L298N single motor channel
L298N motor = new L298N(deviceManager, "motor-a", "Motor A", BCMEnums.BCM_23, BCMEnums.BCM_24, BCMEnums.BCM_25);
motor.setSpeed(60);
motor.forward();
motor.stop();

// DS18B20 temperature sensor, requires Linux 1-Wire sysfs support
DS18B20 ds18b20 = new DS18B20(deviceManager, "temp-1", "Temperature");
double temperature = ds18b20.readTemperatureCelsius();

Last

Thank PI4J very much for providing such a good raspberry pi I/O library.