1. Overall System Design This design uses the STM32F103C8T6 microcontroller as the control core, integrating weight measurement module, height measurement module, motor drive module, display module, and power supply module to achieve automated measurement of a baby’s height and weight. The system employs a resistive strain gauge pressure sensor combined with the HX711 A/D converter … Read more
☆ Design Hardware Composition: STM32 microcontroller minimum system + RTC clock module + HC-05 Bluetooth module + HC-SR04 ultrasonic sensor + photoresistor sensor + LCD1602 display + AT24C02 storage chip + lighting circuit + button settings + buzzer + red LED light 1. This design uses the STM32F103C8T6 microcontroller as the main control chip; 2. … Read more
System Overview This design develops an intelligent vision protection system based on the STM32 microcontroller, effectively preventing myopia and poor posture through functions such as ultrasonic distance measurement, ambient light detection, and timed reminders. The system adopts a modular design, including modules for sensor data acquisition, threshold judgment, alarm prompts, and user interaction, characterized by … Read more
When working on projects and debugging, sensor selection is the first hurdle for engineers. Have you ever struggled with the differences and applications of the various types available? Don’t worry! Today, we will conduct a comprehensive comparison of the five most commonly used sensors—Infrared, Hall, Photoelectric, Ultrasonic, and Temperature—to help you quickly select the right … Read more
Distance Measurement Using Ultrasonic Sensor with Tinkercad and Arduino
For visually impaired individuals, walking safely and confidently can be a challenge, but with the help of technology, we can make it easier for them. This DIY Blind Stick is an innovative and simple solution designed to help users detect obstacles in their path. It uses an Arduino Nano, ultrasonic sensor, and buzzer to sense … Read more
This tutorial mainly explains how to use the ultrasonic sensor for obstacle avoidance and steering.
01 Overview The ultrasonic sensor is a type of sensor that uses ultrasonic waves to measure the distance to obstacles in front. This ultrasonic sensor has undergone many optimizations, providing stable performance and accurate distance measurement, and is compatible with LEGO small particle blocks. 02 Principle Humans can hear sounds due to vibrations of objects, … Read more
Daily Proverb Life has its limits, but knowledge is limitless. Overview of Types and Working Principles of Wind Speed Sensors 1. Mechanical Wind Speed Sensor The wind force generated by air flow drives the sensor to rotate, with the central axis driving internal sensing elements to produce pulse signals. Within the wind speed measurement range, … Read more
In a recent class, I used an ultrasonic sensor in conjunction with the ESP32 IoT development board to conduct an extended experiment based on the textbook, which involved using the sensor and a computer to measure displacement. Under the camera of the smart blackboard system, I detailed the working principle of the ultrasonic sensor and … Read more