Hardware Usage Mega

This document maps the hardware usage on the Arduino Mega which interfaces with the RC receiver, signal lights, brakes, steering, and battery monitor.

For more hardware details, see the ATmega 2560 Datasheet and the Arduino Mega schematic.

Pins

| Pin Number | Pin Name / Alt. Outputs | Arduino | Used | Purpose | +------------+--------------------------+------------+------+---------+ | 1 | PG5 ( OC0B ) | D4 (PWM) | | | | 2 | PE0 ( RXD0/PCINT8 ) | D0 (RX0) | Yes | RBSM | | 3 | PE1 ( TXD0 ) | D1 (TX0) | Yes | RBSM | | 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 ) | | Yes | RC Auton | | 10 | VCC | VCC | Yes | Power | | 11 | GND | GND | Yes | Power | | 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) | Yes | Steering Servo | | 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 | Yes | Reset | | 31 | VCC | VCC | Yes | | | 32 | GND | GND | Yes | | | 33 | XTAL2 | XTAL2 | Yes | Crystal | | 34 | XTAL1 | XTAL1 | Yes | Crystal | | 35 | PL0 ( ICP4 ) | D49 | Yes | RC Steering | | 36 | PL1 ( ICP5 ) | D48 | Yes | RC Brake | | 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) | Yes | Debug Serial | | 46 | PD3 ( TXD1/INT3 ) | D18 (TX1) | Yes | Debug Serial | | 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 | Yes | Battery Voltage | | 79 | PJ7 | | | | | 80 | VCC | VCC | Yes | Power | | 81 | GND | GND | Yes | Power | | 82 | PK7 ( ADC15/PCINT23 ) | A15 | | | | 83 | PK6 ( ADC14/PCINT22 ) | A14 | | | | 84 | PK5 ( ADC13/PCINT21 ) | A13 | | | | 85 | PK4 ( ADC12/PCINT20 ) | A12 | | | | 86 | PK3 ( ADC11/PCINT19 ) | A11 | | | | 87 | PK2 ( ADC10/PCINT18 ) | A10 | | | | 88 | PK1 ( ADC9/PCINT17 ) | A9 | | | | 89 | PK0 ( ADC8/PCINT16 ) | A8 | | | | 90 | PF7 ( ADC7 ) | A7 | | | | 91 | PF6 ( ADC6 ) | A6 | | | | 92 | PF5 ( ADC5/TMS ) | A5 | | | | 93 | PF4 ( ADC4/TMK ) | A4 | | | | 94 | PF3 ( ADC3 ) | A3 | | | | 95 | PF2 ( ADC2 ) | A2 | | | | 96 | PF1 ( ADC1 ) | A1 | | | | 97 | PF0 ( ADC0 ) | A0 | | | | 98 | AREF | AREF | | | | 99 | GND | GND | Yes | Power | | 100 | AVCC | VCC | Yes | Power |

Timers

| Timer | +--------+ | TIMER0 |