Difference between revisions of "Ultrasonic Sensor (HC-SR04) + Raspberry Pi"

Revision as of 18:04, 2 May 2017

There are four pins on the sensor that need to be connected to the pi

- On its end, connect it to Pin 18 (GPIO24)
- Through a 470Ω resistor, connect it also to Pin6 (ground).
  - This is done because GPIO pins only tolerate maximal 3.3V

Connecting resistors and jumper wires between sensors and pi

Python

Create a new script

Link to repository with script to detect the distance of an object in front of the sensor

Creating a new script in Python 3

Save your script as ultrasonic_distance.py

Go to File and click on Save as
In the field Save in browse for the C: drive and then select a folder to save in
For the field File name type in ultrasonic_distance.py
In the field Save as type select All Files
Click on Save

Use the terminal to run the script

Click on the monitor icon on the top of the screen
Type cd "folder name" to change directory to your pythonpractice folder, and hit Enter
Type ultrasonic_distance.py and hit Enter to run your program

@@ Line 7: / Line 7: @@
 ==Wire setup==
+There are four pins on the sensor that need to be connected to the pi
+# VCC to Pin 2 (5v - power)
+# GND to Pin 6 (ground)
+# TRIG to Pin 12 (GPIO18)
+# The 330Ω resistor to ECHO.
+** On its end, connect it to Pin 18 (GPIO24)
+** Through a 470Ω resistor, connect it also to Pin6 (ground).
+*** This is done because GPIO pins only tolerate maximal 3.3V
 [[File:Wire setup.png|250px|thumb|none|Connecting resistors and jumper wires between sensors and pi]]