<span>TDS</span> (Total Dissolved Solids) is an indicator of the total amount of various inorganic and organic substances dissolved in water, usually expressed in milligrams per liter (mg/L) or parts per million (ppm). These substances include minerals such as calcium, magnesium, sodium, and potassium, as well as trace amounts of organic matter and heavy metals. This … Read more
Reply to the public account: Course to obtain resources The Lanqiao Cup Arduino Competition Course is a training program specifically designed for participants in the Lanqiao Cup Arduino competition, aimed at helping students master the core knowledge of Arduino programming and hardware development, thereby enhancing their performance in the competition. The course details are as … Read more
Recently, I have become fascinated with the ESP32 development board and wanted to learn more about it. I happened to purchase a resistive soil moisture sensor, which is shown below: I thought of using the ESP32 to test this sensor. The sensor has four pins: VCC (power), GND (ground), DO (digital signal), and AO (analog … Read more
Step-by-Step Guide to Implementing Accurate Distance Measurement and Obstacle Avoidance with Arduino UNO and Ultrasonic Sensor Only need 1 ultrasonic sensor + Arduino UNO, learn to measure object distance or achieve intelligent obstacle avoidance in 3 steps! From basic principles to complete code, even beginners can easily master it! 1. Project Highlights ✅ Low Cost: … Read more
Want to keep track of the soil moisture in your flower pot at any time? Today, I will teach you how to build a low-cost smart monitoring system using Arduino UNO + Soil Moisture Sensor, allowing you to view data in real-time on your phone! 1. Project Highlights ✅ Low Cost: Materials cost less than … Read more
This development demonstration video utilizes the Arduino Nano Matter Board and the SR602 PIR sensor to create a Matter over Thread occupancy sensor, showcasing how to set up a routine in the Amazon Alexa application to turn lights on and off when the occupancy state changes. Another version of the code runs solely on the … Read more
Do you want to set up a weather station at home to monitor temperature and humidity changes anytime, anywhere? Then try this mini weather station! We will use Arduino, the DHT11 temperature and humidity sensor, and an OLED display to build a super cool weather monitor. Don’t worry, despite the long name, the actual operation … Read more
Overview Gas leaks are common safety hazards in daily life, whether it’s a gas leak in the kitchen or toxic gases elsewhere, the problem can occur at any time. Although there are many smart devices in modern homes, it would be perfect if even the “air” could be a little smarter! This project develops a … Read more
Arduino and Photoelectric Sensors: Automatic Counter Design In industrial production, product counting is a fundamental and important process. This article will introduce how to use Arduino and photoelectric sensors to create an automatic counter that achieves the function of automatically counting objects as they pass by. This project is suitable for beginners and helps to … Read more
Introduction Have you ever been caught outside by a sudden downpour, staring helplessly at the dark clouds above? Or have you thought, “How great would it be if I could know in advance that it was going to rain?” Perhaps you want to create a smart rain alert system but don’t know where to start? … Read more