Experimental Environment Recently, the microcontroller enthusiast used ESP32 and Phyphox to plot the I-V characteristics of a solar panel. The experimental circuit is simple to set up, with automatic data collection and automatic graphing, saving time and effort while yielding good results. What used to take dozens of minutes to complete can now be done … Read more
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, I was inspired by the quality lesson activities conducted by the city’s backbone teachers at the school. During the listening and evaluation session, I managed to use Phyphox and ESP32 to jointly capture the current change images produced by the rotation of a small motor’s rotor, which was quite exciting. After building the experimental … Read more
Figure 1 Experimental Scene Recently, the author has been using Phyphox and ESP32 to capture the current changes when a light bulb is turned on. However, the current change at the moment the light bulb is turned on is quite rapid, making it difficult to draw an ideal current change graph. WeChat Official Account “Physics … Read more
Introduction On the third day of the Lunar New Year, we built an experimental circuit on a breadboard to “plot the I-V characteristics of a diode in the conducting state.” A programmable resistor board was used as the internal resistance of the ammeter, a potentiometer was used as a variable resistor to control the circuit, … Read more
Experimental Scene 1 Introduction Since learning Bluetooth communication with ESP32 and Phyphox during the National Day holiday in 2020, the author has been eager to solve the visualization problem of the relationship between capacitor voltage and charge, attempting to derive the charge amount by integrating the charging current, and then depict the charge-voltage relationship graph. … Read more
Overall View of the Device Last time, when detecting the current changes before and after the rotor of the small motor got stuck using ESP32, the induced electromotive force when the small motor was driven by an external force was measured. However, the changes in electromotive force were too drastic, and the data jumps were … Read more
Recently, the microcontroller enthusiast conducted an experiment to plot the I-V characteristics of a conductor, aimed at learning how to use Bluetooth dual-channel data transmission. In this experiment, the voltage data transmitted via Bluetooth channel 1 is assigned to the x-axis, while the voltage data from Bluetooth channel 2 is assigned to the y-axis, thereby … Read more
Recently, the micro-master utilized Phyphox and ESP32 Bluetooth to explore the relationship between capacitor voltage and charge, achieving quite ideal results. Early Research Axuan Teaching Research Room “Division Method” experiment introducing the concept of capacitance Maker Jiaozuo Using the half-division method to explore the relationship between capacitor voltage and charge Essentially, it involves first charging … Read more