Can we use ultrasonic sensor with NodeMCU?

Can we use ultrasonic sensor with NodeMCU?

Trigger and echo pins of hcsr04 ultrasonic sensor is directly connected to GPIO-2 and GPIO-0 or D4 and D3 pins of nodemcu. The answer is simple, trigger and echo pins output can easily be read by 3.3 volt devices.

Can HC-SR04 run on 3.3 V?

What is an Ultrasonic HC-SR04 Distance Sensor Module? It is a relatively cheap sensor to measure distance between itself and another object by sending an ultrasonic pulse and listening for an echo response. This sensor can be connected to many devices that provide 5v or 3.3v logic.

What is HC in ultrasonic sensor?

The HC-SR04 Ultrasonic Distance Sensor is a sensor used for detecting the distance to an object using sonar. The transmitters emit a high frequency ultrasonic sound, which bounce off any nearby solid objects, and the reciever listens for any return echo.

How do you send ultrasonic sensor data to Thingspeak using NodeMCU?

How to Send Ultrasonic Sensor Data using NodeMCU

  1. Connect the NodeMCU with micro USB cable to your PC.
  2. Press and hold flash button and press the reset button once and now you leave the flash button.
  3. Select the NodeMCU v1.
  4. Select 115200 as baud rate and select the correct COM port.

How do you send ultrasonic sensor data to ThingSpeak using ESP8266?

How is the hc-sr04 connected to the NodeMCU?

The circuit connections are made as follows: The HC-SR04 sensor attach to the Breadboard The sensor Vcc is connected to the NodeMCU +3.3v The sensor GND is connected to the NodeMCU GND The sensor Trigger Pin is connected to the NodeMCU Digital I/O D4 The sensor Echo Pin is connected to the NodeMCU Digital I/O D3

How to wire ESP8266 NodeMCU with hcsr04 ultrasonic raging sensor?

In this illustration we will going to wire the ESP8266 12E nodeMCU with Ultrasonic Raging Sensor HCSR04. As you can see the illustration below the sensor trigger pin is connected to D1 which is pin 5 in Arduino Board, and the ECHO is connected to D2 which is pin 4 in Arduino Board.

How to interfacing ultrasonic sensor with NodeMCU?

Interfacing ultrasonic sensor with NodeMCU and displaying the distance in the Blynk app. A very simple code for beginners trying to use the Blynk app. The ultrasonic sensor measures the distance and via WiFi it displays it in the LCD of the Blynk app. Before running this code make sure you have the Blynk app in your smartphone.

What is the starting pulse of the hc-sr04?

The starting pulse is about 10us and the PWM signal will be 150 us-25us on the base of the distance. If no obstacle is there, then a 38us pulse is generated for NodeMCU to confirm that there are not objects detected. Before getting the reading of the HC-SR04 know about the calculation.