Using TPA3110 digital power amplifier chip, the power can reach 15W, and there are two power interfaces. The Bluetooth part uses bk8000L finished module, which has good performance and affordable price. Supports button playback and pause, track switching, volume adjustment, and also supports external audio line input and microphone input. After testing the finished product, the sound quality is good, the Bluetooth connection is relatively stable, the button functions are normal, the external audio line input is normal, and the microphone calls are normal. A complete AD project file is provided, which can be modified as needed, and the BOM needs to be exported by yourself.
Protues simulation example (8051) - playing music
SYZYGY is an FPGA extension standard for medium to high speed interfaces. This design breaks out all 32 I/O pins into taps with 0.1" headers. A small prototyping area is also provided.
Open the laptop's built-in camera through matlab and detect faces.
Pocket calculator style general purpose programmable device (computer) ideal for learning programming and improving building/soldering skills.
AT89C52 microcontroller is used as the core control component to design an electronic keyboard. The microcontroller is used as the main control core, and it forms the core main control module together with the keyboard speaker and other modules. The main control module is equipped with 8 buttons and a reset button.
Based on DA14580_ADXL362 schematic diagram (Xiaomi bracelet solution)!
The product design is open source and very cool and beautiful.
Amethyst is a classic home computer developed by Matt Sarnoff. It has an integrated keyboard, can generate sounds and images, uses the Forth programming language, has image and voice commands, a debugger and screen editing functions.
This project is a completely open source smart watch based on the ESP32 WROOM module, with a very high degree of completion. In the project design, serial communication and charging are completely through the onboard micro USB interface, without any external interface board processing.
Four-channel radio remote control schematic diagram
Mega-Cube is a light cube that drives 4096 LEDs based on PL9823. The main control is Teensy4.0 based on NXP i.MXRT1060 FlexIO function and many 595 shift registers. It can control up to 32 channels, each channel 1000 LED.
A design example of implementing a simple MP3 Player using an STM32 processor. This comprehensive application example helps readers understand the applications of STM32, SPI interface, SD card, TIMER, interrupts, FAT file system, USB, etc.
It adopts Qinheng's self-developed RISC-V microprocessor "Highland Barley V4" and integrates 2Mbps low-power Bluetooth on the chip. It is equipped with a blood oxygen and heart rate module, a nine-axis sensor, a motor drive module, a low-power touch detection module and a 0.96-inch high-definition IPS display to meet the application needs of general bracelets.
Apple's full series of drawings: iPhone 5s Chinese schematic + component distribution diagram
This computing watch is designed using the SAML22 ARM microcontroller. This particular microcontroller has a segmented LCD controller capable of driving the LCD used inside the watch.
Digital photo frame source code (AT76C120+CT956)
The WiFi remote control is based on ESP32 Pico D4 MCU and 160x80 pixel mini TFT display. Additionally, there are onboard I2C temperature and humidity sensors and an accelerometer.
You can record your life anytime and anywhere, remember people's names, calculate food calories, translate in real time, and have intelligent conversations...
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