Arduino Shields Compatibility

Arduino Shields Compatibility#

The DualMCU ONE board is compatible with a wide range of Arduino shields and accessories. The board features the same pinout as the Arduino UNO Rev3, making it easy to use with existing shields. The board also features a USB-C connector for power and data, a microSD card slot, and a dual-core architecture with an RP2040 and an ESP32 microcontrollers.

DualMCU ONE

Fig. 44 DualMCU ONE board#

Multi-purpose Shield for DualMCU ONE#

Multi-purpose Shield

Fig. 45 Multi-purpose Shield#

The Multi-purpose Shield is a versatile accessory for the DualMCU ONE board. It features a variety of sensors and components, including:

  • 2 LED indicators: Show the program status.

  • 2 switches: For external interrupt experiments.

  • Reset button: Allows resetting the board.

  • DHT11 sensor: Measures temperature and humidity.

  • Potentiometer: Provides analog input.

  • Passive buzzer: Functions as an alarm.

  • Full-color RGB LED: Provides multiple color options.

  • Photocell: Detects the brightness of light.

  • LM35D temperature sensor: Measures temperature.

  • Infrared receiver: Enables infrared communication.

  • Digital pins: 2 digital pins (D7 and D8).

  • Analog pin: 1 analog pin (A3).

  • IIC interface: For I2C communication.

  • TTL serial pin: For serial communication.

Warning

The Multi-purpose Shield ADC sensors are connected to a 5V voltage supply, so caution is needed when connecting them to the DualMCU ONE board.

from machine import Pin
import time
from dht import DHT11
from dualmcu import *

# Create an instance of Shield
my_shield = Shield(
    pin_red=D9, pin_green=D10, pin_blue=D11,
    pin_buzzer=D5, pin_led1=D13, pin_led2=D12,
    pin_button1=D2, pin_button2=D3, pin_analog=A0
)

# Configure DHT11 sensor
sensor_dht = DHT11(Pin(D4))

try:
    while True:
        # Read DHT11 sensor
        sensor_dht.measure()
        temp_dht = sensor_dht.temperature()
        hum = sensor_dht.humidity()

        # Read analog sensor
        analog_value = my_shield.read_analog()

        # Print the values read
        print(f'Temperature: {temp_dht}°C Humidity: {hum}% Analog: {analog_value}')

        # Read buttons and control LEDs
        my_shield.set_led1(my_shield.read_button1() == 0)
        my_shield.set_led2(my_shield.read_button2() == 0)

        # Play a sequence of tones and change the LED colors
        for color, freq in zip(
            ['red', 'green', 'blue', 'yellow', 'cyan', 'magenta', 'white', 'off'],
            [262, 294, 330, 349, 392, 440, 494, 523]
        ):
            my_shield.set_led(color)
            my_shield.play_tone(freq, 0.5)
            time.sleep(0.1)

except KeyboardInterrupt:
    my_shield.deinit()
Contents