3 Pin Ultrasonic Sensor Raspberry Pi

If you refer to the previous projects based on the ultrasonic sensor module i have briefly.

3 pin ultrasonic sensor raspberry pi.

The raspberry pi ultrasonic sensor interface is different from interfacing led button lcd motors etc. Using a raspberry pi distance sensor ultrasonic sensor hc sr04. This is my project using raspberry pi with the ultrasonic sensor and i d like to share it with you all. A set of resistors for each sensor you are connecting 330ω and 470ω.

We ll need to use a small voltage divider circuit consisting of two resistors to lower the sensor output voltage to something our raspberry pi can handle. This is because the output of the hc sr04 ultrasonic sensor is at a 5v logic level whereas the raspberry pi works on a 3 3v logic level. A voltage divider consists of. Transmitting and receiving signals on the grove ultrasonic distance sensor share one pin saving the requirement of using all available pins.

This is a video tutorial about how to interface raspberry pi with ultrasonic sensor. My name is ahmed darwish. The resistors are used as a voltage divider to get the 5v down to something within spec 3 3v max for the pi gpio pins. The type of ultrasonic sensor i will be using with the raspberry pi is the hcsr04 which is the most popular one.

It should work. Hc sr04 ultrasonic sensor with raspberry pi. A brief note on ultrasonic sensors. The grove ultrasonic distance sensor supports 3 3v allowing it to be directly connected to the i o of the raspberry pi instead of using a voltage conversion circuit.

This one is most frequently use with arduino boards for measuring the distance is used in obstacle avoidance robots water level monitoring systems and so on you can check. Sending a 5v signal into that unprotected 3 3v input port could damage your gpio pins which is something we want to avoid. I am using a standard hc sr04 ultrasonic sensor. Ultrasonic sensor is used for distance measurement and gives fairly accurate readings as its using ultrasonic sound to find the distance.

Ultrasonic sensors can measure distances using sound waves. This sensor is special in it s own way. The python program is also explained. Ultrasonic sensor s hc sr04.

There are four pins labeled on the sensor that need to be connected to the pins on the raspberry pi vcc to pin 2 5v power. This is a detailed tutorial including all the explanation about interfacing of sensor its working and the algorithm of python program. Ultrasonic sensor with raspberry pi overview. Ease of pairing with raspberry pi and arduino.

Jumper wires to connect the sensor s to the pi. Hello every one. A interfacing an ultrasonic sensor with raspberry pi. Breadboard to connect the sensor s to the pi.

It comes from a category of sensors which operate at a different a logic level 5v than the pi s gpio pins 3 3v. If both are the same then you will get half the voltage 2 5v which is in spec but just barely above the 1 8v the pi is looking for to trigger a high on the pin you have connected to echo. I have been asked to prepare a code that works on python to control 8 ultrasonic sensors connect.