Readable and writable electronic spell NFC card

Introduction: Readable and writable NFC spell card. Based on NXP's NT3H1101W0FHKH nfc chip.

Schematic PCB

High voltage arc generator

Introduction: TYPE-C charging-high voltage flashlight-anti-wolf artifact

Schematic PCB

Simple ammeter

Introduction: Simple CC Form

Schematic PCB

【Core board】STM32F103C8T6

Introduction: Simplified startup mode using buttons, BOOT1 defaults to pull-down, BOOT0 defaults to pull-down, press the button to pull BOOT0 high

Schematic PCB

USB to TTL based on CH340N

Introduction: Suitable for STM32, STC and other microcontrollers, using TypeC interface, easy to use.

Schematic PCB

Please do not use the CH9329-Kit development board without verifying the project.

Introduction: The smallest system development board based on CH9329. It has not been verified. Please do not create the board.

Schematic PCB

TPA3116 100W*2 dual chip power amplifier board with op amp

Introduction: Dual-chip 2.0-channel stereo amplifier based on TPA3116, providing a maximum output power of 100w*2, replaceable op amp, supports 8-26v voltage.
Dual-chip 100w*2 amplifier has stronger driving force and better bass dive than single-chip 50w*2

Schematic PCB

TDA7388/7850 41w*4 four-channel amplifier module car amplifier

Introduction: DIY four-channel power amplifier board is fully plug-in components, low cost, better sound, and much less noise than digital power amplifier

Schematic PCB

PM2.5 detector/flashable weather clock firmware, weather station firmware

Introduction: Read the value of the PM2.5 sensor and display it on the OLED screen.

Schematic PCB

PCIEX16 to OCP+3*NVME

Introduction: PCIE X16 to OCP+3*NVME
size is within 10*10cm, free proofing available

Schematic PCB

PCIE 2.5G network card, single port and dual port

Introduction: RTL8125BG 2.5G network card, the dual-port version uses the ASM1182e PCIE expansion chip

Schematic PCB

Just Yinka (Ai Kun)

Introduction: This card can play basketball

Schematic PCB

Music path-finding remote control car based on GD32

Introduction: The project has been basically completed.

Schematic PCB

ESP burning fixture 1

简介：ESP32系列芯片最小系统 烧录夹具

Schematic PCB

LS12S wireless handle

Introduction: Homemade wireless controller, using LS12S welded directly on the board for communication, can be connected to Bluetooth module and mpu6050 module, has built-in charging and serial communication functions, 2 rockers and 8 buttons

Schematic PCB

rtl8723bs-SD-TF expansion board

Introduction: rtl8723bs-SD-TF expansion board

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BottomBoard copy

Introduction: Testing

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ADS8509

Introduction: ADS8509

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remote control handle

Introduction: Remote control car handle, stm32f103c8t6 as main control

Schematic PCB

STM32C8T6 minimum core board

Introduction: STM32 minimum system board

Schematic PCB