CupRTCGift

The PCB of the gift electronic cup.

Technical specifications:

• Input power supply 5V from USB or from batteries.
• LED matrix controlling through an SPI interface.
• LCD-display.
• 9 RGB leds WS2812.
• Downloding hex audio file through UART interface.
• Main MCU STM32F103C8RT6.
• External EEPROM 256 Kbit M95256 with an SPI interface.
• 12 bit DAC MCP4921.
• Audio amplifier LM386M.