Desktop pen holder and calendar made with raspberry pi pico

In theory, it could connect to Google Calendar and show today's events while still being ongoing. Also on the list of features to be implemented is a switch or sensor that changes mode when the pen is removed, and buttons or touch controls for the user interface.

Schematic PCB

2018 Electronic Competition Question D-Gesture Recognition Device (Anhui University)

Schematic PCB

Hipoink: Small open source e-paper display updated and wirelessly powered via NFC (schematic and source code)

HiPo is a 3.52-inch e-paper display module the size of a business card. Content is uploaded via NFC via a convenient app, no batteries required. The development board can compile different display functions by editing the code.

Schematic PCB

Teacher ChaN’s headphone amplifier design

Teacher ChaN’s headphone amplifier design

Schematic PCB

Multifunctional open source custom macro keyboard based on esp32s3

Schematic PCB

QR code recognition source code based on STM32 + QR code decoding library lib

QR code recognition source code based on STM32 + QR code decoding library lib

Schematic PCB

Smart network desk lamp based on ESP32S2 and MaixBit

Schematic PCB

Obstacle measuring car

A car with intelligent judgment function is designed and produced. The car has the following functions: automatic obstacle avoidance function; tracking function (driving according to the black track on the road); phototaxis function (finding the point light source in front and driving in place); It has the function of detecting the number of iron pieces placed on the road surface; it calculates and displays the distance traveled and the walking time, and can make sounds and light up. The work can be used as a high-end smart toy, or as a powerful application example for college students to learn embedded control.

Schematic PCB

Steno-Flex: An innovative, cheap, customizable shorthand

Steno-Flex is a unique, low-cost stenotype that matches standard stenotype layouts and key actions. By using flexible keys with touch sensors, Steno-Flex is able to simplify the stenotype's design and mechanics, making Steno-Flex lighter and less expensive than current stenotypes on the market. Steno-Flex uses modern materials and electronic equipment, combined with computers, to allow students and novices to develop shorthand skills. Just plug the USB cable into your computer, launch the open source shorthand software Plover, and you're ready to go. Provides online tutorials and guides. Steno-Flex is an effective device for people who want to learn shorthand and develop real-time speech transcription. Shorthand technology is evolving to become the standard solution for data entry, from simple keyboards to sophisticated shorthand controls.

Schematic PCB

A tiny, open source USB computer for security applications

The USB armory Mk II is a full-featured computer (900 MHz ARM® processor, 512 MB RAM, Bluetooth, USB-C) in a small form factor, designed from the ground up with information security applications in mind.

Schematic PCB

Mico: Open source, high-quality PDM to USB microphone based on Raspberry Pi RP2040 chip

Mico is a high-quality PDM to USB audio microphone based on the Raspberry Pi RP2040 chip. Most compact microphones available for embedded Linux systems such as the Raspberry Pi have high noise and low sensitivity. By pairing a high-quality PDM microphone with a standard USB audio output, Mico gives you an audio input platform that you can tailor to your needs. Mico is a great platform to learn and experiment with the RP2040 and digital audio. It can be used as a universal USB microphone for a Raspberry Pi, desktop or laptop computer. Mico can also be used as a high-quality USB audio input for embedded machine learning applications. Additionally, because TinyML supports RP2040, Mico can be used as a standalone edge computing audio device.

Schematic PCB

Designing electronic password lock using PIC microcontroller

This article introduces the electronic code lock made with PIC16F84 microcontroller. The PIC16F84 microcontroller has a total of 18 pins and 13 available I/O interfaces. The chip has a 1K×14 FLASHROM program memory, a 36×8 static RAM general register, a 64×8 EEPROM data memory, and an 8-level deep hard stack.

Schematic PCB

Snake based on microcontroller (schematic PCB source program simulation file)

The microcontroller production contains schematic pcb diagram source program simulation files

Schematic PCB

ESP32-Wifi real-time desktop

Use the PIO plug-in of VSCode to directly open the project folder under the Code directory for compilation~

Schematic PCB

Make your own smart home wireless alarm with AT89C2051

Use AT89C2051 to make your own smart home wireless alarm.

Schematic PCB

Realizing LED reading of remote control key values ​​based on microcontroller (program and circuit diagram)

Microcontroller realizes the program of LED reading remote control key value

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2018 Electronic Competition Question D-Gesture Recognition Device (Xidian University)

Schematic PCB

Smart light based on stm32 nucleo_L476 (operating instructions + source code)

Smart light based on stm32 nucleo_L476 (operating instructions + source code).

Schematic PCB

Temperature and humidity monitor solution based on MM32W wireless MCU series

Introducing a Bluetooth application solution with rich usage scenarios - a temperature and humidity monitor developed based on the MM32W series.

E-books based on Raspberry Pi microcontroller

This time it’s an e-book based on the Raspberry Pi.

Schematic PCB