11.7 Modbus TCP Programming and Experimentation This course does not support sensors that use the Modbus TCP protocol, so we will write two programs: ① modbus_server_tcp.c: Simulate a Modbus TCP sensor ② modbus_client_tcp.c: Operate the sensor The program structure is shown in the figure below: No special connections are required on the hardware. The source … Read more
Background and Overview Sensor is an important part of the Internet of Things (IoT), “Sensors to IoT” is equivalent to “eyes to humans.” Without eyes, humans cannot see this vast world, and without sensors, IoT cannot perceive the ever-changing world. Currently, there are many sensors developed for IoT, including Accelerometers, Magnetometers, Gyroscopes, Ambient Light Sensors, … Read more
Hello everyone, today I would like to share a paper published in 2020 in ACS Sensors, titled “Low-Temperature Hydrogen Sensor: Enhanced Performance Enabled through Photoactive Pd-Decorated TiO2 Colloidal Crystals”. This research indicates that using a sensitive layer based on Pd modified TiO2 long-range ordered crystals in a photo-assisted amperometric gas sensor can achieve excellent H2 … Read more
Click the blue text to follow Optimizing ADC sampling accuracy is a key skill in microcontroller development, especially when processing sensor data. An inaccurate ADC sampling result can lead to system failures, such as significant errors in temperature sensors, causing devices to overheat or become too cold. Today, let’s discuss how to improve the accuracy … Read more
Gluco Sensor Proposed By Segment Leader of the Boutique Rod Division, Yu Zengchun Project Proposal Upgrading Protection for Precision Rolling Mill Sensor Connections Implementation Process Due to the high precision requirements of the flat-rolling mill and the numerous control sensors, the rolling mill must be disassembled during each offline roll change, and the sensor lines … Read more
[For camera information, check Camera Notes] In yesterday’s article, we didn’t mention “sensor size”, and I didn’t expect that there would be so many misconceptions… How Big is 1 Inch Actually? Due to some historical issues*, whether in cameras or smartphones, the “1 inch” in the diagonal length of the sensor is not 25.4mm. * … Read more
Editor’s Note: Since the birth of sensors, they have been embedded and applied in various products and technologies, becoming an indispensable component of terminal devices. Over time, with the development of the Internet era, although sensors have begun to integrate with the Internet of Things (IoT), forming intelligent collaborative parts, the public suddenly discovered that … Read more
1. Main Functions (1) Automatically collect light and sound data; (2) Automatically control the street light switch based on sound decibel values and light intensity; (3) The street light turns on and automatically turns off 3 seconds after a person leaves. 2. Usage Method After the system is running, the LCD1602 displays the collected … Read more
Monitor air quality using a Raspberry Pi, a cheap sensor, and an inexpensive screen. — Stephan Tetzel About a year ago, I wrote an article on how to measure air quality using a Raspberry Pi and a cheap sensor. We have been using this project at school and privately for the past few years. However, … Read more
The soil moisture sensor, also known as the soil humidity sensor, consists of stainless steel probes and waterproof tips, allowing it to be buried in soil and embankments for long-term use. It can perform point monitoring and online measurement of both surface and deep soil moisture conditions. When used in conjunction with a data collector, … Read more