ESP32 PD desktop power supply

ESP32 PD desktop power supply

Schematic PCB

ESP32-Wifi real-time desktop

Use the PIO plug-in of VSCode to directly open the project folder under the Code directory for compilation~

Schematic PCB

Zhihuijun produces portable pocket monitor & power bank

Zhihui Jun designed and produced a portable pocket monitor (& power bank) to solve personal pain points. There is no room for improvement in terms of appearance~

Schematic PCB

HDMI to MIPI module, mobile phone screen into display (produced by Zhihuijun)

The quality of mobile phone screens is very high and the price is low. It is almost impossible to find mini displays made of mobile phone screens on the market, so this project is to solve this demand.

Schematic PCB

STM32 hard-core DIY mechanical keyboard | Bluetooth USB dual mode | Light control

Genesis One uses STM32F103RCT6 as the main control, integrating lithium battery charge and discharge management, voltage stabilization, Bluetooth serial port HID, USB-HID, LED light array driver, and button detection circuit. It can realize Bluetooth connection mode (supports IOS, Android and other platforms) and USB connection mode. The response time of Bluetooth connection is about 15ms, and the response time of the master control in USB connection mode is about 0.3Ms.

Schematic PCB

TJBot, a DIY cardboard robot open sourced by IBM

Maker Kits are a set of DIY open source templates for building things using IBM AI services in fun and easy ways. IBM TJBot is the first maker kit in the series. You can 3D print or laser cut the robot's body and then bring it to life using the resources provided by IBM! Additionally, you can unleash your creativity and create new recipes, using any of the available IBM AI services to bring TJBot to life! TJBot only works with Raspberry Pi.

Schematic PCB

NES-Game - Homemade handheld game console based on ESP32

Based on ESP32 and ATtiny861 to build a Nintendo NES game emulator handheld console with complete materials for making the project

Schematic PCB

LiPow, a USB type-C powered lithium battery charger

The lithium battery charger project with USB type-C power transmission based on STM32G0 uses USB type-C with power transmission to charge the lithium polymer battery. Supports charging and balancing of 2s-4s packs, supports charging up to 100W.

Schematic PCB

A PCB violin made by ATtiny microcontroller

mini-violin is an open source project for violin design, and the circuit schematic is quite simple. The ATtiny85 controls two LEDs and a piezo buzzer, in addition to a button to switch songs. What's particularly interesting is that the violin strings are connected to the analog inputs of the microcontroller so that they can be controlled by contacting conductive materials. Come play the violin.

Schematic PCB

DIY retro game console MicroByte based on ESP32

The MicroByte is a tiny console capable of running games from the NES, GameBoy, GameBoy Color, Game Gear and Sega Master systems, with all components designed into this 78 x 17 x 40 mm package.

Schematic PCB

Intelligent desktop weather forecast system based on STM32

With voice recognition function, you can use voice to search for weather, as well as radio, temperature and humidity, calendar and other functions.

Schematic PCB

ESP8266 multi-function ink screen

Arduino development, weather, clock, reading, network distribution and other functions

Schematic PCB

Small UAV based on Espressif ESP32-S2/ESP32

ESP-Drone can be connected and controlled through Wi-Fi network using mobile APP or game controller. Currently, it supports multiple modes such as self-stabilizing flight, fixed-altitude flight, and fixed-point flight. This solution has a simple hardware structure, clear code structure, supports function expansion, and can be used in STEAM education and other fields.

Schematic PCB

Sensorless sine wave drive application solution based on MM32SPIN motor/power supply chip - handheld vacuum cleaner

This article briefly introduces the application example of sensorless sine wave drive technology based on MM32SPIN25 in "handheld vacuum cleaner".

Bluetooth selfie stick solution based on MM32W wireless MCU

​Introducing an application solution for Bluetooth products that is very common in everyone's life, a Bluetooth selfie stick application developed based on the MM32W series.

Temperature and humidity monitor solution based on MM32W wireless MCU series

Introducing a Bluetooth application solution with rich usage scenarios - a temperature and humidity monitor developed based on the MM32W series.

Commonly used 4-string lithium battery protection board design information

The most commonly used lithium battery protection circuit drawing, 4 strings

Schematic PCB

Sugar glider health management system based on RSL10

The project uses RSL10 to build a sugar glider health monitoring system. With good exercise and diet, my little jelly (sugar glider) can grow up healthily.

Schematic PCB

Graduation project based on 51 microcontroller 8-key electronic keyboard design (schematic diagram, source program, etc.)

AT89C52 microcontroller is used as the core control component to design an electronic keyboard. The microcontroller is used as the main control core, and it forms the core main control module together with the keyboard speaker and other modules. The main control module is equipped with 8 buttons and a reset button.

Schematic PCB

High-precision LED electronic clock design based on STM8 (all design materials)

Based on STM8S003K3 microcontroller, it has alarm and chime functions and automatic light sensing function.

Schematic PCB