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Arduino Mega Pro 3.3V solderpad

3.3V microcontroller running a version of the stk500v2 bootloader at 8MHz

www.sparkfun.com/products/10744

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Description

Part of a 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: Because 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.

Features

  • ATmega2560 running at 8MHz external resonator
  • Low-voltage board needs no interfacing circuitry to popular 3.3V devices and modules (GPS,
  • Accelerometers, sensors, etc)
  • USB connection off board
  • 3.3V regulator
  • Over current protected
  • Reverse polarity protected
  • DC input 3.3V up to 12V
  • Resettable fuse prevents damage to board in case of short
  • Power select switch acts as on/off switch

Available in the UK from SK Pang.

Schematic

Board

Bill of Materials

Designator Value Description
C1 0.1uF Capacitor
C2 10uF Capacitor Polarized
C3 10uF Capacitor Polarized
C4 0.1uF Capacitor
C5 0.1uF Capacitor
C6 0.1uF Capacitor
C7 0.1uF Capacitor
C8 0.1uF Capacitor
F1 PTCSMD Resettable Fuse PTC
J1 AVR_SPI_PRG_6PTH AVR ISP 6 Pin
J2 POWER_JACKPTH Power Jack
JP1 FTDI
JP2 LOGO-SFENEW Spark Fun Electronics PCB Logo
JP3 LOGO-SFENEW Spark Fun Electronics PCB Logo
JP4 Batt Header 2
JP5 External Header 2
JP6 External Header 2
JP7 FIDUCIAL1X2.5 Fiducial Alignment Points
JP8 FIDUCIAL1X2.5 Fiducial Alignment Points
LED1 green LEDs
LED2 yellow LEDs
R3 10k Resistor
R4 10k Resistor
R5 10k Resistor
R6 470 Resistor
R7 470 Resistor
S1 SWITCH-MOMENTARY-2SMD
S2 SPST Switch
SJ1 SOLDERJUMPERNC Solder Jumper
U$1 OSHW-LOGOL Open Source Hardware Logo This logo indicates the piece of hardware it is found on incorporates a OSHW license and/or adheres to the definition of open source hardware found here: http://freedomdefined.org/OSHW
U1 ARDUINO-MEGAPRO Arduino Mega footprint connections
U2 ATMEGA2560AU MICROCONTROLLER
U3 V_REG_LDOSMD Voltage Regulator LDO
Y1 RESONATORSMD Resonator

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Files

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