avr16321 2 VCC JP1 1 3 5 7 9 2 4 6 8 10 VCC C22 1UF 3 4 VCC R1 VCC USB_5V U4 4.7K ATMEGA16-DIP40 VCC 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 ADC0 ADC1 PA2 PA3 PA4 PA5 PA6 PA7 GND VCC GND VCC C9 1uf RESET C1 1UF A 2 3 1 3 S1 2 1 POWER VCC LED1 RESET GND Header 5X2 D1 1N4001 GND U3 7805 MOSI MISO SCK RESET PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 VCC GND 1 3 2 DC9～12V 1 C13 1UF 7805 2 3 C17 C15 1UF 1UF 100U C18 R2 2K RXD TXD XTAL1 7.3728M C11 18P C14 47UF C8 18P JP5 LCD_1602 U1 D Connector 9 B J1 1 6 2 7 3 8 4 9 5 C3 1UF 14 7 13 8 C4 6 1UF T1OUT T2OUT R1IN R2IN VEE VCC C2 1UF 2 16 VDD VCC C1+ C1C2+ C2T1IN T2IN R1OUT R2OUT GND 1 C6 3 4 5 C7 11 TXD 10 12 RXD 9 15 GND 1UF R11 2K PC6 PC7 GND VCC GND 1UF VCC C10 1UF PA4 PA5 PA6 PA7 VCC GND MAX232CPE 1 2 3 4 5 6 7……