Blue Pill STM32-F103 (ARM Cortex-M3 72MHz) or ( eBay). Nucleo32-L432KC (ARM Cortex-M4 80MHz) or ( eBay). 12.4 Would you recommend HC-SR04 for safety-critical applications?Īll the example code/LABs/projects in the course are going to be done using those boards below. 12.3 Polling or Interrupt For HC-SR04 Ultrasonic Distance Measurement?. 12.2 What’s The Max & Min Output Pulse Widths? Range? Limitations?. 12.1 How Often Should I Trigger The Sensor?. 12 Questions I Usually Get About HC-SR04 Ultrasonic Sensors. 11.2 2- ICU Handler Execution Time (The Calculation Logic). 11.1 1- Measurements Validity Over The Entire Input Range. 11 Final Tests & Measurements For HC-SR04 Driver Code. 9 STM32 HC-SR04 Ultrasonic & Digital Filtering – LAB. 8 STM32 Multi Ultrasonic Read, Servo & LCD Print – LAB. 7 STM32 Multi Ultrasonic Read & LCD Print – LAB. 6 STM32 HC-SR04 Ultrasonic Read & LCD Print – LAB. 5 STM32 HC-SR04 Ultrasonic Driver (Library). 4.4 Guidelines For Designing Our HC-SR04 Driver (Library). 4 STM32 HC-SR04 Ultrasonic Sensor Interfacing. 3 Different Techniques & Procedures To Read HC-SR04 Ultrasonic Sensor. Then send both raw and filtered data to PC over UART to plot and visualize the digital LPF results. Just to test our library compatibility with the previously developed servo library LAB 44 Read 1 HC-SR04 Ultrasonic Sensor Using Library APIs & Include our MATH/FIR filters to apply a moving average filter to the sensor distance readings. 
In this tutorial: 4 LABs LAB 41 Reading 1 HC-SR04 Ultrasonic Sensor & Print to 1 LCD LAB 42 Configure 2 HC-SR04 Sensors to use 2 different timers & Print distance to 1 LCD LAB 43 Configure 2 HC-SR04 Sensors to use the same timer as well as 1 more servo with them on that same timer & Print distances to 1 LCD. But first of all, we’ll discuss how the HC-SR04 ultrasonic sensor works and the possible different procedures for reading the echo pulse width to determine the distance. We’ll conclude this tutorial with some tests, measurements, and spot the light on potential improvements and features that you can make and add to this driver library code. And we’ll create 4 different example projects with STM32 uC and ultrasonic sensors.
I’ll also show you the HC-SR04 library (driver) that I’ve developed for STM32 microcontrollers and discuss how it works and how it’s been built in this way.
In this tutorial, we’ll be discussing the interfacing of STM32 microcontrollers with HC-SR04 ultrasonic sensors using timer input capture mode with interrupts. Previous Tutorial Tutorial 37 Next Tutorial STM32 HC-SR04 Ultrasonic Sensor Interfacing Examples & Driver (Library) STM32 Course Home Page 🏠
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