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 [31] | 5 3 1 | Vin
| D0(RX) (PCINT16)(RXD) PD0 [30] | 6 4 2 | GND GND
| RESET (PCINT14)(RES) PC6 [29] | ICSP | [29] PC6 (RESET)(PCINT14) RESET
| GND GND [D2 | | VCC 5V
| D2 (PCINT18)(INT0)PD2 [32] | | [22] ADC7 A7
| D3 (OC2B)(PCINT19)(INT1)PD3 [ 1] | | [19] ADC6 A6
| D4 (XCK)(PCINT20)(T0) PD4 [ 2] | | [28] PC5 (PCINT13)(ADC5)(SCL) A5/D19
| D5 (OC0B)(PCINT21)(T1) PD5 [ 9] | | [27] PC4 (PCINT12)(ADC4)(SDA) A4/D18
| D6 (OC0A)(PCINT22)(AIN0)PD6 [10] | | [26] PC3 (PCINT11)(ADC3) A3/D17
| D7 (PCINT23)(AIN1)PD7 [11] | | [25] PC2 (PCINT10)(ADC2) A2/D16
| D8 (ICP1)(PCINT0 )(CLKO)PB0 [12] | | [24] PC1 (PCINT9 )(ADC1) A1/D15
| D9 (PCINT1 )(OC1A)PB1 [13] | | [23] PC0 (PCINT8 )(ADC0) A0/D14
| D10 (SS)(PCINT2 )(OC1B)PB2 [14] | | [21] AREF AREF
| D11 (MOSI)(PCINT3 )(OC2) PB3 [15] | | 3V3
| D12 (MISO)(PCINT4 ) PB4 [16] | |-----| | [17] PB5 (PCINT5 )SCK D13
| ---| USB |--
| |_____|