Digital voltage and current meter based on CW32 microcontroller

This design utilizes a CW32 microcontroller-based digital tube voltmeter and ammeter, expanding the system board's pinout. The serial port pins facilitate UART, and the IIC communication OLED displays more content. A DHT11 female connector allows for reading ambient temperature and humidity during testing, considering the impact of temperature on voltage and current accuracy.
The OLED and DHT11 sensor integration effects are shown in the video demonstration
of static and dynamic digital tube display : https://www.bilibili.com/video/BV13spReREEe/ Post-production optimization: The text on the PCB silkscreen layer was enlarged and bolded for easier reading and differentiation. For test code and project details, please refer to the official documentation: CW32 Digital Voltmeter and Ammeter Training Camp Project Tutorial Documentation | LCSC Development Board Technical Documentation Center (lckfb.com)