4 2015-10-31 f.althaus Mega Pro 3.3V It’s powerful, it’s portable, it’s Pro! We’re continuing our Pro series of Arduino-compatible micro-controllers with the addition of the Mega Pro. This is a 3.3V microcontroller running a version of the stk500v2 bootloader at 8MHz. Just like the other Pro-series boards this board is built with all SMD components and comes with no headers populated in order to minimize the cost and the board profile. Of course this board has the same pin-configuration as the Arduino Mega so it is dimensionally shield compatible (but do keep in mind that this is a 3.3V board unlike the Arduino Mega). The Pro series is meant for users that understand the limitations of system voltage (3.3V), lack of connectors, and USB off board. This board connects directly to the FTDI Basic Breakout board and supports auto-reset and the DC power jack footprint is available, but not populated. Note: If you are using Arduino, modifications were made to the bootloader to support the 3.3V system, you will need to download and install a new board definition so that the Mega Pro can be programmed in the Arduino environment. The .zip archive below contains all of the files that you’ll need including a “readme” file with simple instructions for how to install them. OR you can use Wiring and not worry about this since the board is officially supported. You will need to download the board definition files here. Arduino Mega Pro 3.3V https://www.sparkfun.com/products/10744 Arduino MEGA Pro Sparkfun 3.3V 3.3V Sparkfun Microcontroller Arduino Mega Pro PB3

VCC

PB1

PB2

RESET

GND

DTR

TX0

RX0

VCC

GND

GND

GND

LIPO

GND

RAW

RX0

TX0

PE4

PE5

VCC

PG5

PE3

VCC

VCC

VCC

PH3

PH4

PH5

PH6

PB4

PB5

PB6

PB7

TX3

RX3

TX2

RX2

TX1

RX1

SDA

SCL

PA0

PA1

PA2

PA3

PA4

PA5

PA6

PA7

PC7

PC6

PC5

PC4

PC3

PC2

PC1

PC0

PD7

PG2

PG1

PG0

PL7

PL6

PL5

PL4

PL3

PL2

PL1

PL0

PB3

PB2

PB1

PB0

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

A15

AREF

GND

GND

GND

GND

GND

RESET

VIN