It is the supreme art of the teacher to awaken joy in creative expression and knowledge.
Everytime I want to build something I have to search the web for pinouts. Since the Arduino's claim to fame is simplicity and ease of use, that seemed counterproductive. So I finally decided to just put them on my own website where I knew where to go immediately. I will keep adding stuff to this page as time goes on. Pinouts as well as other relevant data.
Arduino pin /----------- Chip pin --------------\ Arduino pin _________ | (RESET) PC6 | \_/ | PC5 (ADC5)(SCL) A5 | D0(RX) (RXD) PD0 | | PC4 (ADC4)(SDA) A4 | D1(TX) (TXD) PD1 | | PC3 (ADC3) A3 | D2 (INT0) PD2 | | PC2 (ADC2) A2 | D3 (INT1) PD3 | | PC1 (ADC1) A1 | D4 (XCK/T0) PD4 | | PC0 (ADC0) A0 | VCC | | GND | GND | | AREF | (XTAL1/TOSC1) PB6 | | AVCC | (XTAL2)(TOSC2)PB7 | | PB5 (SCK) D13 | D5 (T1) PD5 | | PB4 (MISO) D12 | D6 (AIN0) PD6 | | PB3 (MOSI/OC2) D11 (PWM) | D7 (AIN1) PD7 | | PB2 (SS/OC1B) D10 (PWM/SERVO) | D8 (ICP1) PB0 |_________| PB1 (OC1A) D9 (PWM/SERVO)
Arduino pin /----------- Chip pin --------------\ Arduino pin ____________ | D1(TX) (PCINT17)(TXD) PD1  | 5 3 1 | Vin | D0(RX) (PCINT16)(RXD) PD0  | 6 4 2 | GND GND | RESET (PCINT14)(RES) PC6  | ICSP |  PC6 (RESET)(PCINT14) RESET | GND GND [D2 | | VCC 5V | D2 (PCINT18)(INT0)PD2  | |  ADC7 A7 | D3 (OC2B)(PCINT19)(INT1)PD3 [ 1] | |  ADC6 A6 | D4 (XCK)(PCINT20)(T0) PD4 [ 2] | |  PC5 (PCINT13)(ADC5)(SCL) A5/D19 | D5 (OC0B)(PCINT21)(T1) PD5 [ 9] | |  PC4 (PCINT12)(ADC4)(SDA) A4/D18 | D6 (OC0A)(PCINT22)(AIN0)PD6  | |  PC3 (PCINT11)(ADC3) A3/D17 | D7 (PCINT23)(AIN1)PD7  | |  PC2 (PCINT10)(ADC2) A2/D16 | D8 (ICP1)(PCINT0 )(CLKO)PB0  | |  PC1 (PCINT9 )(ADC1) A1/D15 | D9 (PCINT1 )(OC1A)PB1  | |  PC0 (PCINT8 )(ADC0) A0/D14 | D10 (SS)(PCINT2 )(OC1B)PB2  | |  AREF AREF | D11 (MOSI)(PCINT3 )(OC2) PB3  | | 3V3 | D12 (MISO)(PCINT4 ) PB4  | |-----| |  PB5 (PCINT5 )SCK D13 | ---| USB |-- | |_____|