This article is an excellent article from the Kx forum, author ID: wx_莫克斯 Preparation USB Protocol Specifications l USB UARTl USB HIDl USB Memory The one at the top is the standard serial port implementation, which can connect to MCUs like STM32 or ESP8266 via USB. The middle one can be used for BadUSB (to … 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
A Favored MCU – ESP32 ESP32 integrates 2.4 GHz Wi-Fi and Bluetooth dual-mode, using TSMC’s ultra-low power 40nm process, suitable for various IoT application scenarios. 32-bit MCU & 2.4 GHz Wi-Fi & Bluetooth/Bluetooth LE Xtensa 32-bit LX6 single/dual-core processor, computing capability up to 600 MIPS 448 KB ROM 520 KB SRAM 16 KB RTC SRAM … Read more
1. Concept Introduction 1.1 What is the Boot Process of a Microcontroller? The boot process of a microcontroller refers to a series of initialization steps that occur from the moment power is applied or the device is reset until the user code begins execution. Different microcontrollers have specific details in their boot processes, but most … 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
Enable the multi-core functionality of the ESP32 to execute tasks in parallel while setting the chip’s clock frequency and the FreeRTOS real-time system. The effect achieved in this article is shown in the GIF, where two displays execute in parallel, each using one of the ESP32’s two cores. The display of the two screens, if … Read more
1 Introduction Recently, I have been troubled by various trivial matters, and my mind has been restless. Seeing that members of the “Phyphox Bluetooth Experiment Development Group” WeChat group are releasing new works every day, I was also eager to try. Following the example of Teacher Mei from Beijing, I conducted an experiment to “plot … Read more
01 Install Thonny Software 1. Problem/Goal How to install the MicroPython development integrated environment? Below is a detailed installation guide for the software, and basic testing instructions can be found on the Thonny official website. 2. Basic Principles One commonly used development environment software for MicroPython is Thonny, an open-source software developed by the University … Read more
Recently, the microcontroller enthusiast has been using Phyphox and ESP32 Bluetooth to redraw the I-V characteristics of a light bulb, continuously changing the experimental parameters in hopes of finding the optimal settings. In one experiment, the enthusiast set the sampling frequency of the ESP32 to 100Hz and slowly adjusted the voltage across the light bulb … Read more