Design of smoke SMS alarm based on STM32 (program, PCB, schematic diagram)

Detect whether there is smoke and flammable gas in the environment. If the above gases are present, send an alarm text message to the mobile phone.

Schematic PCB

syzygy-flir-tau2: Tau2 LWIR core plug-in for SYZYGY FLIR

This design is a plug-in from FLIR's Tau2 LWIR core. Both the LVDS and CMOS channels are connected to the UART configuration channel through the SYZYGY connector.

Schematic PCB

Resonance: Resonance plug-in board for card10 to add video output

The board of this design is intended to sit between the fundamental and harmonic boards and monitor the SPI data running to the display. Onboard ECP5 will mirror the display and output a copy to a digital monitor.​

Schematic PCB

GPDI: SYZYGY interface board with 2 digital video ports

SYZYGY is an FPGA extension standard for medium to high speed interfaces. This project is a splitter that outputs video to a regular digital display and also supports input from a digital display.

Schematic PCB

Open source handheld vector network analyzer NanoVNA

NanoVNA is a small handheld vector network analyzer with LCD display and battery-powered portable device. This project aims to provide a useful RF gadget.
The measurement frequency range is 50KHz - 300MHz, and there are many derivatives based on this design on the Internet.

Schematic PCB

syzygy-rgb888-lcd: 5 paired with Sipeed Tang Nano

​Connect to a 5" LCD paired with a Sipeed Tang Nano. This is an 800x480 LCD with RGB888 connections. All 8 bits of each channel are connected via SYZYGY connectors.

Schematic PCB

syzygy-sgmii: Breakout board for SGMII Gigabit Ethernet PHY DP83867C

This design is a breakout board for SGMII Gigabit Ethernet PHY DP83867C. It connects to SERDES via a SYZYGY-TXR connector to test and evaluate Ethernet over 1.25Gbps serial channels. 2 channels are used and CDR is required on the RX path. Compared to RGMII, SGMII significantly reduces the number of signals required for routing.

Schematic PCB

Foreign powerful, simple and portable oscilloscope design (schematic diagram, PCB, program source code, etc.)

Foreign powerful, simple and portable oscilloscope design (schematic diagram, PCB, program source code, etc.)

Schematic PCB

A complete access control system (schematic diagram + source program)

A complete access control system (schematic diagram + source program)

Schematic PCB

Tesla Roadster open source design data (battery monitoring board, vehicle display system, HVAC controller, diagnostic software)

Schematic PCB

Nuvoton NUC501 MCU micro thermal printer solution circuit diagram and source code

The composition and working principle of the micro thermal printer based on NUC501MCU are analyzed in detail, and the design and implementation of thermal head overheat protection and stepper motor drive module are given.

Schematic PCB

Reference design of Epson multimeter microcontroller S1C17M02/M03

Can measure DC/AC voltage, DC/AC current, resistance, inductance, capacitance, diode, frequency. Built-in 16bit ADC, digital filter, RMS effective value circuit and peak hold circuit. Multimeter control unit integrated with microcontroller, officially launched reference design kit, powered by button battery, including schematic diagram.

Schematic PCB

OpenEarable open source in-ear wireless headphones (finished version)

OpenEarable aims to enable ear-based sensing applications by providing a flexible open source hardware platform. It integrates a range of sensors, including a 9-axis inertial measurement unit, ear canal pressure and temperature sensors, inward-facing ultrasound microphone, speakers, buttons and controllable RGB LEDs. With these capabilities, OpenEarable provides researchers and developers with the ability to explore a variety of application scenarios.

OpenEarable controls and transmits sensor data via BLE (Bluetooth Low Energy). Audio is played from or recorded to the internal SD card. OpenEarable is compatible with the provided dashboard and Edge-ml.

Schematic PCB

Smart sensor light based on Gizwits (source program, schematic diagram, PCB)

Realized functions: Use the mobile phone APP to adjust the light intensity according to the amount of people walking around and remotely control the lights.

Schematic PCB

gpdi-serdes: GPDI using serdes

SYZYGY is an FPGA extension standard for medium to high speed interfaces. This design splits the video output to a regular digital display and also supports input from the digital display. It connects to the SERDES via a SYZYGY-TXR connector. Would love to be able to test the 5Gbps output of high resolution GPDI.

Schematic PCB

Outdoor environment detection device based on the Internet of Things (STM32, APP, WIFI).zip

This article develops and implements a WiFi module based on STM32 on an embedded development platform. Combined with the above new concepts of the Internet of Things, it enables users to monitor the environment in real time through the network. This system enables users to grasp and control the situation they want to know in real time. Home information (temperature and humidity information, light information, PM2.5) is obtained through various sensors, and users can control this information on the Android interface.

Schematic PCB

hdmi-si: HDMI breakout board

Simple branching of HDMI cable signals for analysis/verification of signal level and phase.

Schematic PCB

Infrared and wireless remote control simulation schematic diagram and microcontroller program based on Proteus

Infrared and wireless remote control simulation schematic diagram and microcontroller program based on Proteus, Proteus infrared simulation example and Proteus microcontroller simulation program

Schematic PCB

Electronic photo album based on STM32F103RC (schematic diagram, PCB source file, program source code and production)

Electronic photo album based on STM32F103RC (schematic diagram, PCB source file, program source code and production).

Schematic PCB

A fully open source multifunctional measuring instrument PSLab

The goal of PSLab is to create an open source hardware device (with all resources fully open) that can be used by electronics enthusiasts to do experiments. And offers a range of sensors for engineering experiments, including oscilloscopes, waveform generators, frequency counters, programmable voltage, current sources and data loggers.

Schematic PCB