MPU6050 verification board

Introduction: Commonly used MPU6050 sensor module GY-521

Schematic PCB

[Failed] CM1033 protection board

Introduction: A failed CM1033 protection board. When testing, the charging mos cannot be turned on and cannot be charged. This design is for reference only.

Schematic PCB

3S balancing board ETA3000

Introduction: A small 3S battery balancing board based on ETA3000 to avoid the heirloom balancing board on TB and small yellow croaker. It comes with its own connector, which can be changed to direct soldering wires according to the actual situation.

Schematic PCB

Three-phase inverter system

Introduction: The system uses STM32 as the main control chip to generate three-phase SPWM waves and amplify the power through the half-bridge drive circuit. After filtering, it generates three-phase power. Then it collects the output voltage after the front-end attenuation through STM32 and sends it to the computer via Bluetooth. The host computer receives the data and conducts harmonic analysis using MATLAB.

Schematic PCB

[Training Camp Official Case] ​​USB Ammeter

Introduction: Based on N32G430USB voltage and ammeter

Schematic PCB

Independent component QC2.0 fixed 12V automatic decoy device

Introduction: This is a QC2.0 automatic decoder (no switch required), with a fixed decoy voltage of 12V, and a decoy 12V success indicator light. The cost of using independent components is extremely low.

Schematic PCB

ChameleonMini

Introduction: ChameleonMini is based on a piece of hardware for multi-band and multi-type RFID simulation designed by a German university when studying RFID security. Realize functions such as M1 card simulation and key sniffing.

Schematic PCB

ChameleonChameleonMiniRevERebooted 2.1

Introduction: ChameleonMini is based on a piece of hardware for multi-band and multi-type RFID simulation designed by a German university when studying RFID security. Realize functions such as M1 card simulation and key sniffing.

Schematic PCB

ETA9697 lithium battery charging +5V boost module

Introduction: Simple functional verification module for ETA9697

Schematic PCB

ETA6002 verification board V1

Introduction: ETA6002 verification board

Schematic PCB

RTK20-Main-Board

Introduction: Ultra-thin heating table control motherboard, perfect central software structure open source address: https://gitee.com/liao_zhelin/rtk20-heat-bed

Schematic PCB

[Fish Feeding Artifact] Automatic fish feeding tool based on esp8266

Introduction: It’s really annoying to have to remember the baby fish every day, so I came up with the idea of ​​making an automatic fish feeding tool. The function is very simple: let the motor drive the fish food can to rotate twice every day and pour some fish food out. By designing the time interval, set the feeding time every 6 hours, half a day or a day; set the amount of fish food by turning a few turns.

Schematic PCB

Winbond FLASH writer/mass production copy tool

Introduction: Use STM32F103RCT6 to burn binary files in TF cards into Winbond FLASH, or to copy one Winbond FLASH to other FLASH at the same time. Design highlights: FLASH offline burning, duplication, burning progress display, etc.

Schematic PCB

Remote boot module based on ESP8266

Introduction: Remote boot module based on ESP8266, please modify the program according to the IO definition in the schematic diagram

Schematic PCB

USB2.1_Hub

Introduction: USB2.1 expansion dock, one C port input, three USBA port outputs and one C port output.

Schematic PCB

IP2365

Introduction: Yingjixin IP2365 lithium battery charging module

Schematic PCB

[Single-chip microcomputer] CNC adjustable voltage stabilized power supply design-V1.0

Introduction: CNC adjustable DC regulated power supply

Schematic PCB

The first 25A current adjustable power supply chip on the open source platform

Introduction: Adjustable high-power power supply designed based on Texas Instruments TPSM41625, maximum current 25A

Schematic PCB

[Internet of Things] Hongmeng Smart WiFi Switch Legend+4238662A

Introduction: Use Hongmeng Hi3861 chip combined with a servo to achieve remote control of physical switches in your home or dormitory

Schematic PCB

Universal infrared remote control box

Introduction: Tuya requires no development, has been verified, and can be used.

Schematic PCB