![]() ![]() ![]() ![]() void setup () Code language: Arduino ( arduino ) Example Code Using the NewPing Library In the setup we have to define the trigPin as an output and the echoPin as an Input and also start the serial communication for showing the results on the serial monitor. Int distance Code language: Arduino ( arduino ) defines pins numbers const int trigPin = 9 Then we need a Long variable, named “duration” for the travel time that we will get from the sensor and an integer variable for the distance. In this case they are the pins number 9 and 10 on the Arduino Board and they are named trigPin and echoPin. } Code language: Arduino ( arduino ) Code Explanationįirst we have to define the Trig and Echo pins. Prints the distance on the Serial Monitor Serial. Reads the echoPin, returns the sound wave travel time in microseconds Sets the trigPin on HIGH state for 10 micro seconds digitalWrite(trigPin, HIGH) Clears the trigPin digitalWrite(trigPin, LOW) begin( 9600) // Starts the serial communication PinMode(trigPin, OUTPUT) // Sets the trigPin as an Output pinMode(echoPin, INPUT) // Sets the echoPin as an Input Serial. */ // defines pins numbers const int trigPin = 9 Ultrasonic Sensor HC-SR04 and Arduino Tutorial Here’s a code for measuring distance using the HC-SR04 ultrasonic sensor and Arduino. As an Amazon Associate I earn from qualifying purchases. Breadboard and Jump Wires ……… Amazon / Banggood / AliExpressĭisclosure: These are affiliate links.Arduino Board …………………………… Amazon / Banggood / AliExpress.Ultrasonic Sensor HC-SR04 ………… Amazon / Banggood / AliExpress.You can get these components need for this tutorial from any of the sites below: Use ATmega32u4, 2 serial ports.The Ground and the VCC pins of the module needs to be connected to the Ground and the 5 volts pins on the Arduino Board respectively and the trig and echo pins to any Digital I/O pin on the Arduino Board. Suitable for low cost and communication demand of hobbyistsĭFRduino Mega has 54 digital pins and 16 analog pins, 4 UART channels. Mega 2560 has 256KB FLASH, two times of Mega1280, which could offer a larger create space for your projects.ĭFRobot Arduino Compatible Microcontrollers SeriesĪrduino UNO R3, suitable for Arduino beginners and hobbyistsĭFRobot Leonardo is a low-cost controller, integrated with Xbee and SPI. You can simply power it with a USB cable or a standard adapter or use a battery as external power. ![]() The board comes with a bootloader that enables users to download programs directly via a USB. It features 54 digital I/O ports, 16 analog signal input ports, 4 UARTs(hardware serial ports), and a 16MHz crystal oscillator. What’s more, DFRduino Mega2560 can work steadily even when only powered by a 3.7V lithium battery.ĭFRduino Mega2560 is an ATmega2560-based microcontroller that provides full compatibility with "Arduino MEGA2560“. In addition to optimizing the overheating issue, it offers a wider input voltage range. The new version of DFRduino Mega2560 has improved the VIN power supply circuit by changing the easily overheat LDO to DC-DC circuit for ensuring safety and reliability in long-term use. ![]()
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