Open source calculator CG-35, RPN calculator similar to HP-35

Schematic PCB

Intimate Photo Frame - Network weather digital photo frame based on STM32H745

Schematic PCB

Kalman filter balancing car source code

Kalman filter balancing car source code is available for personal testing

Schematic PCB

ANAVI Gas Detector: Monitoring air quality and detecting hazardous gases based on ESP8266

ANAVI Gas Detector is an open source, easy-to-use, Wi-Fi compatible development board for monitoring air quality and detecting hazardous gases. It supports popular analog MQ gas sensor modules such as MQ-135, MQ-2, MQ-3, etc. In addition, it comes with slots for a mini OLED display and up to three additional I²C sensor modules, including for the precise digital sensor HTU21D to measure temperature and humidity. Air pollution is a very serious problem. Monitoring air quality and detecting toxic gases can improve a person's quality of life. All these features make the ANAVI gas detector suitable for developers, manufacturers, students and open source enthusiasts interested in home automation and environmentally friendly lifestyles.

Schematic PCB

Wireless car card with RF module

2 Layers PCB 100 x 100 mm FR-4, 1.6 mm, 1, HASL with lead, Black Solder Mask, White silkscreen; This card is part of the chassis to build a wireless car controlled with the RX480 RF module.

Schematic PCB

Inkplate 6PLUS: Versatile, easy-to-use, Wi-Fi enabled 6-inch e-paper display with touchscreen and front light

Inkplate 6PLUS is a powerful, energy-efficient, Wi-Fi-enabled ESP32 development board with a recyclable 6.0-inch e-paper display equipped with touch screen and headlight. It's part of the Inkplate family of open hardware powered by open source software libraries, making it the easiest electronic cardboard to use, whether you prefer the Arduino IDE or MicroPython.

Schematic PCB

51 microcontroller clock

51 single-chip machine clock

Schematic PCB

Protues simulation example (8051)-PWM temperature adjustment.rar

Protues simulation example (8051)-PWM temperature adjustment.rar

Schematic PCB

usb keyboard and mouse dual use source code

Schematic PCB

Kalman filter version of balancing car source code

Schematic PCB

Oscilloscope source code based on stm32f4

A good source code for stm32f4 oscilloscope, which can use 3-channel ADC to measure waveforms and display the waveforms on the screen and also display the amplitude.

Schematic PCB

51+sl811 source program + schematic diagram for reading and writing U disk

Schematic PCB

Diansai source code smart home management system

Diansai source code smart home management system

Schematic PCB

Simple walking robot program source code

Schematic PCB

Wireless Home Automation (Control and Monitoring) using Nextion HMI Display_PanelBoard

2 Layers PCB 38 x 41 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

Schematic PCB

Three-axis gimbal source code schematic software

Schematic PCB

12f629 microcontroller decodes KEELOG source code, commonly used remote control rolling codes

Schematic PCB

2012 Heilongjiang Province Electronic Design and Production Competition Intelligent Fire Fighting Car Program

2012 Heilongjiang Province Electronic Design and Production Competition Intelligent Fire Fighting Car Program

Schematic PCB

Intelligent farmland supervision system based on ucosIII and STemwin

Intelligent farmland supervision system USART1 sends text messages USART3 uploads data UART4 receives Zigbee data

Schematic PCB

ATtiny Flasher: Open hardware flash tool for Atmel ATtiny

ATtiny Flasher is a convenient device that allows you to use your favorite IDE and debugging tools when developing for ATtiny microcontrollers. Enjoy the classic Arduino development experience while using bare metal. Whether you're a design engineer, a hobbyist, or someone just starting to program MCUs, ATtiny Flasher can help you—without having to port your code to the target platform when you're done.

Schematic PCB