Experimental Scene and Circuit Connection Recently, I found online that a teacher published a paper in a journal, using the voltammetry method to measure the resistance of a photoresistor while measuring light intensity with a light sensor, then plotting the relationship curve of photoresistor resistance and light intensity in a spreadsheet. The steps are cumbersome … Read more
Experimental Scenario 1 Introduction Recently, while reviewing exam papers, I encountered an innovative question based on photoresistors. Inspired by this, I decided to design a clever experiment using Phyphox and ESP32 to see if I could measure my own heart rate. 2 Design Idea Utilizing the combination of Phyphox and ESP32 to measure the resistance … Read more
Recently, we conducted an experiment to explore the relationship between the current of a photoresistor and light intensity. The photoresistor and a voltage divider resistor were connected in series, powered by the 5V output of the ESP32. We used pin IO33 to collect the voltage across the voltage divider resistor and calculated the current through … Read more
Recently, the Micro Master has been dedicated to conducting innovative experimental research using Phyphox and ESP32 Bluetooth, accumulating a lot of experience while also facing numerous challenges. On October 7, 2020, I sought help at the Clockwise Rubik’s Cube Club led by expert Li Lu from the Maker Education Teacher Studio in Jiaozuo City. I … Read more
Hey everyone, I’m your old friend Secretary Jiang. Today, I’m bringing you an interesting project—an automatic light control system based on a photoresistor. Just the name sounds high-tech, right? In simple terms, the light turns off when it’s bright and turns on automatically when it’s dark. We’ll use a Siemens PLC to implement this function, … Read more
Target shooting games are often popular at fairs. Today, we will create a game using micro:bit that can be played at home. Materials One Micro:bit board One power module providing 5V and 3.3V output One MG90S servo motor One photoresistor Several DuPont wires One 18650 battery holder Two 18650 batteries One laser pen One iron … Read more