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Pinout reference table

Mapped Pin Name RAMPS v1.3 Farmduino v1.4 Farmduino
D0 (RX0)   RXD0 (RX0) RXD0 (RX0)
D1 (TX0)   TXD0 (TX0) TXD0 (TX0)
D2 (PWM) X MAX D2 D2
D3 (PWM) X MIN D3 D3
D4 (PWM) Servo 0 Servo 0 Servo 0
D5 (PWM) Servo 1 Servo 1 Servo 1
D6 (PWM)   Servo 2 Servo 2
D7 (PWM)   Lighting Lighting
D8 (PWM)   Water Water
D9 (PWM) Water Vacuum Vacuum
D10 (PWM) Vacuum Peripheral 4 Peripheral 4
D11 (PWM)   Servo 3 Servo 3
D12 (PWM)   Peripheral 5 Peripheral 5
D13 (PWM) LED LED LED
D14 (TX3) Y MIN X2 EN X2 EN
D15 (RX3) Y MAX X2 STEP X2 STEP
D16 (TX2) X1 ENCDR A X1 ENCDR A  
D17 (RX2) X1 ENCDR B X1 ENCDR B  
D18 (TX1) Z MIN D18 D18
D19 (RX1) Z MAX D19 D19
D22   X2 ENCDR A SS to STM32
D23 Y ENCDR A Y ENCDR A  
D24 X2 EN (E EN) Y ENCDR B  
D25 Y ENCDR B X1 EN X1 EN
D26 X2 STEP (E STEP) X1 STEP X1 STEP
D27 Z ENCDR A X1 DIR X1 DIR
D28 X2 DIR (E DIR) Z ENCDR B  
D29 Z ENCDR B Z ENCDR A  
D30   X2 DIR X2 DIR
D31 X1 ENCDR AQ Y EN Y EN
D32   Y STEP Y STEP
D33 X1 ENCDR BQ Y DIR Y DIR
D34   Z EN Z EN
D35 Y ENCDR AQ Z STEP Z STEP
D36   Z DIR Z DIR
D37 Y ENCDR BQ AUX EN AUX EN
D38 X1 EN D38 D38
D39 Z ENCDR AQ X2 ENCDR B  
D40 UTM E AUX STEP AUX STEP
D41 Z ENCDR BQ AUX DIR AUX DIR
D42 UTM G D42 D42
D43   D43 D43
D44 (PWM) UTM H D44 D44
D45 (PWM)   D45 D45
D46 (PWM) Z STEP D46 D46
D47   D47 D47
D48 Z DIR D48 D48
D49   D49 D49
D50 (MISO)     MISO
D51 (MOSI)     MOSI
D52 (SCK) UTK K   SCK
D53 (SS) UTM L   SS
A0 (D54) X1 STEP A0 A0
A1 (D55) X1 DIR A1 A1
A2 (D56) Y EN A2 A2
A3 (D57)   A3 A3
A4 (D58)   A4 A4
A5 (D59) UTM D (Soil Sensor) UTM D (Soil Sensor) UTM D (Soil Sensor)
A6 (D60) Y STEP A6 A6
A7 (D61) Y DIR A7 A7
A8 (D62) Z EN A8 A8
A9 (D63) UTM C (Tool Verification) UTM C (Tool Verification) UTM C (Tool Verification)
A10 (D64) UTM F Z-MAX Z-MAX
A11 (D65) UTM I Z-MIN Z-MIN
A12 (D66) UTM J Y-MAX Y-MAX
A13 (D67)   Y-MIN Y-MIN
A14 (D68)   X-MAX X-MAX
A15 (D69)   X-MIN X-MIN

2560 chip pinout

Diagram

PinMap2560big.png

https://www.arduino.cc/en/Hacking/PinMapping2560

Table

Chip Pin # Chip Pin Name Mapped Pin Name
1 PG5 ( OC0B ) D4 (PWM)
2 PE0 ( RXD0/PCINT8 ) D0 (RX0)
3 PE1 ( TXD0 ) D1 (TX0)
4 PE2 ( XCK0/AIN0 )  
5 PE3 ( OC3A/AIN1 ) D5 (PWM)
6 PE4 ( OC3B/INT4 ) D2 (PWM)
7 PE5 ( OC3C/INT5 ) D3 (PWM)
8 PE6 ( T3/INT6 )  
9 PE7 ( CLKO/ICP3/INT7 )  
10 VCC VCC
11 GND GND
12 PH0 ( RXD2 ) D17 (RX2)
13 PH1 ( TXD2 ) D16 (TX2)
14 PH2 ( XCK2 )  
15 PH3 ( OC4A ) D6 (PWM)
16 PH4 ( OC4B ) D7 (PWM)
17 PH5 ( OC4C ) D8 (PWM)
18 PH6 ( OC2B ) D9 (PWM)
19 PB0 ( SS/PCINT0 ) D53 (SS)
20 PB1 ( SCK/PCINT1 ) D52 (SCK)
21 PB2 ( MOSI/PCINT2 ) D51 (MOSI)
22 PB3 ( MISO/PCINT3 ) D50 (MISO)
23 PB4 ( OC2A/PCINT4 ) D10 (PWM)
24 PB5 ( OC1A/PCINT5 ) D11 (PWM)
25 PB6 ( OC1B/PCINT6 ) D12 (PWM)
26 PB7 ( OC0A/OC1C/PCINT7 ) D13 (PWM)
27 PH7 ( T4 )  
28 PG3 ( TOSC2 )  
29 PG4 ( TOSC1 )  
30 RESET RESET
31 VCC VCC
32 GND GND
33 XTAL2 XTAL2
34 XTAL1 XTAL1
35 PL0 ( ICP4 ) D49
36 PL1 ( ICP5 ) D48
37 PL2 ( T5 ) D47
38 PL3 ( OC5A ) D46 (PWM)
39 PL4 ( OC5B ) D45 (PWM)
40 PL5 ( OC5C ) D44 (PWM)
41 PL6 D43
42 PL7 D42
43 PD0 ( SCL/INT0 ) D21 (SCL)
44 PD1 ( SDA/INT1 ) D20 (SDA)
45 PD2 ( RXDI/INT2 ) D19 (RX1)
46 PD3 ( TXD1/INT3 ) D18 (TX1)
47 PD4 ( ICP1 )  
48 PD5 ( XCK1 )  
49 PD6 ( T1 )  
50 PD7 ( T0 ) D38
51 PG0 ( WR ) D41
52 PG1 ( RD ) D40
53 PC0 ( A8 ) D37
54 PC1 ( A9 ) D36
55 PC2 ( A10 ) D35
56 PC3 ( A11 ) D34
57 PC4 ( A12 ) D33
58 PC5 ( A13 ) D32
59 PC6 ( A14 ) D31
60 PC7 ( A15 ) D30
61 VCC VCC
62 GND GND
63 PJ0 ( RXD3/PCINT9 ) D15 (RX3)
64 PJ1 ( TXD3/PCINT10 ) D14 (TX3)
65 PJ2 ( XCK3/PCINT11 )  
66 PJ3 ( PCINT12 )  
67 PJ4 ( PCINT13 )  
68 PJ5 ( PCINT14 )  
69 PJ6 ( PCINT 15 )  
70 PG2 ( ALE ) D39
71 PA7 ( AD7 ) D29
72 PA6 ( AD6 ) D28
73 PA5 ( AD5 ) D27
74 PA4 ( AD4 ) D26
75 PA3 ( AD3 ) D25
76 PA2 ( AD2 ) D24
77 PA1 ( AD1 ) D23
78 PA0 ( AD0 ) D22
79 PJ7  
80 VCC VCC
81 GND GND
82 PK7 ( ADC15/PCINT23 ) A15 (D69)
83 PK6 ( ADC14/PCINT22 ) A14 (D68)
84 PK5 ( ADC13/PCINT21 ) A13 (D67)
85 PK4 ( ADC12/PCINT20 ) A12 (D66)
86 PK3 ( ADC11/PCINT19 ) A11 (D65)
87 PK2 ( ADC10/PCINT18 ) A10 (D64)
88 PK1 ( ADC9/PCINT17 ) A9 (D63)
89 PK0 ( ADC8/PCINT16 ) A8 (D62)
90 PF7 ( ADC7 ) A7 (D61)
91 PF6 ( ADC6 ) A6 (D60)
92 PF5 ( ADC5/TMS ) A5 (D59)
93 PF4 ( ADC4/TMK ) A4 (D58)
94 PF3 ( ADC3 ) A3 (D57)
95 PF2 ( ADC2 ) A2 (D56)
96 PF1 ( ADC1 ) A1 (D55)
97 PF0 ( ADC0 ) A0 (D54)
98 AREF Analog Reference
99 GND GND
100 AVCC VCC

Abbreviation guide

Abbreviation Meaning
A Analog
D Digital
GND Ground
MISO Master In Slave Out
MOSI Master Out Slave In
PWM Pulse Width Modulation
RX Receive
SCK Serial Clock
TX Transmit
VCC Voltage Common Collector