SIM card adapter board

Introduction: eSim to SIM

nanoSim to SIM

eSim/nanoSim to SIM

Schematic PCB

Brushless motor housing

Introduction: Brushless motor housing of brushless electric drill.

Schematic PCB

Waveform recognition

Introduction: Question J of the 2021 Electronic Competition (Periodic Signal Waveform Parameter Identification) related design ideas, principles, codes, and demonstration videos.

Schematic PCB

Water drop access card puzzle

Introduction: The copied https://oshwhub.com/liujigang/shuidimenjinka
made a puzzle to maximize the use of the pcb placed in one order.

Schematic PCB

W806 IoT clock and temperature and humidity sensor

Introduction: This project uses W806 chip for development, adds a light sensing module, a temperature sensing module, leads out most of the pins, and adds WiFi8266 ​​as a network interface, which can expand the functions of the development board and truly realize the Internet of Things function.

Schematic PCB

#The 7th Lichuang Electric Competition#usb ammeter

Introduction: This project uses the National Technology N32G430C8L7 chip as the main controller chip, uses bottom sampling to detect current and voltage, transplants the systick timer as the millisecond time base, and transplants the software IIC and hardware IIC OLED drivers.

Schematic PCB

Planck keyboard, 40% layout, three modes

Introduction: Planck three-mode PCB layout file, because it was drawn using other software, the 3D drawing of the light is sealed, and the actual layout will not be affected.

Schematic PCB

Solder paste pusher

Introduction: USB powered handheld syringe packaging solder paste pusher

Schematic PCB

KAZZO FC red and white machine game card dump burner

Introduction: KAZZO fc game cassette dump tool
1. Full-pin components, the difficulty of welding is reduced (the interface is patch type-c);
2. TYPE-C interface, mainly because the data cable is hard to find now, you can change it yourself if you don’t like it Pin usb interface;

Schematic PCB

FC red and white machine game flash card Mapper0

Introduction: For proofing thickness, you need to choose 1.2mm FC red and white machine game burning card Mapper0. The board is being printed and has not been verified yet. You need to cooperate with kazzo to burn the game.

Schematic PCB

ov7670

Introduction: Image display using Arduino mini, ov7670 camera and tft1.8-inch LCD screen.

Schematic PCB

smart curtains

Introduction: The advantages of this project are open source smart curtains driven by ATMEGA328P-AU+ stepper motors. It is small in size, has no redundant sensors, is easy to make and has medium precision, and can also be interactively interconnected with apps and mesh.

Schematic PCB

LEDS human body sensor light

Introduction: Since the toilet in my old home is relatively old and it is inconvenient to wire, there is no lighting. Going to the toilet at night depends entirely on feeling, so I used simple materials on hand to make a toilet that can last up to 7 days (guaranteed 7 days if used infrequently). up to two weeks)

Schematic PCB

USB-TTL

Introduction: ~~~

Schematic PCB

STM F405 flight control bf inav flying machine fixed wing flight control

Introduction: F405 flight control, MPU6500 gyroscope, low cost. 20, 30 hole double version. The PCB file is in the attachment, and the bf and inav ground stations are connected to the USB cable to flash the firmware. Automatic return test video https://b23.tv/GcbdOsY

Schematic PCB

MATEK F411 fixed wing flight control

Introduction: MATEK F411 fixed-wing flight control STM32F411+MPU6500 gyroscope single panel. Two sets of serial ports, 1 soft serial port.
Adjust the BEC on the back of the PCB to 5v in the attachment before soldering.

Schematic PCB

DIY magnetic fluid speaker

Introduction: Inspired by YouTube author and Douyin author, DIY magnetic fluid speaker is not expensive, comes with a complete set of drawings, and does not require 3D printing.

Schematic PCB

[Hongmeng Internet of Things] Light-on reminder device based on Hongmeng HI3861

Introduction: The light-turning reminder device based on Hongmeng HI3861 has a built-in OLED 0.96-inch I2C interface that can display information and indicate the ambient light intensity through a photoresistor, so as to remind people to turn on the lights through the display screen when it gets dark.

Schematic PCB

SIMPLEFOC_Brushless motor high-power dual-channel driver (verified)

Introduction: It should be the cheapest solution on the market.
Dual high-power brushless DC motor driver
supports arduino, esp32, esp8266, stm32, etc. ~
supports simplefoc

Schematic PCB

16*16 dot matrix screen_plug-in

Introduction: Production of a 16*16 dot matrix screen

Schematic PCB