STM32F407VET6 Expansion Board V1.0

This expansion board includes commonly used modules, communication protocols, and input/output interfaces,
primarily including:

a common LCD display, a Taojingchi serial port screen
ADC acquisition module, a
WS2812B button, RGB three-color LEDs
, an HC_SR04 ultrasonic sensor, an SG90 servo motor, an HC-05 Bluetooth
sensor, a DHT11 temperature and humidity sensor, a photoresistor, a potentiometer, a
buzzer, a rotary encoder,
I2C, UART, and PWM output interfaces
. DC socket power supply is available in 5V, 3.3V, and 1.65V outputs.

Detailed specifications:

All pins are led out via pin headers and are silkscreened;
the IIC interface OLED includes both new (starting with GND) and old (starting with VCC) versions, so be careful not to plug them in incorrectly;
the AD acquisition interface uses an RF coaxial connector for easy connection and fixation. Replaceable wires reduce costs;
WS2812B+RGB three-color LEDs meet general lighting needs;
ultrasonic + servo + Bluetooth, combined with a TB6612FNG module connected to the PWM output interface, can be used in the design of intelligent vehicles;
temperature and humidity sensors, photoresistors, potentiometers, and rotary encoders provide multiple ways to acquire analog signals;
5VDC socket and TYPE-C power supply for the development board are optional;
5V, 3.3V, and 1.65V voltage outputs, 5V and 3.3V can be selected as needed, and 1.65V can be used for AC signal acquisition boost voltage;

additional notes:

the back is printed with silkscreen markings for I2C, UART, and PWM output interfaces;
the attachment includes the initialization HAL library project for the interface modules (to be open-sourced after completion);