The Arduino Pro is a microcontroller board based on the ATmega328. The Pro comes in both 3.3V/8MHz and 5V/16MHz versions. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a battery power jack, a power switch, a reset button, and holes for mounting a power jack, an ICSP header, and pin headers. A six pin header can be connected to an FTDI cable or Sparkfun breakout board to provide USB power and communication to the board. The Arduino Pro is intended for semi-permanent installation in objects or exhibitions. The board comes without pre-mounted headers, allowing the use of various types of connectors or direct soldering of wires. The pin layout is compatible with Arduino shields. The 3.3V versions of the Pro can be powered with a battery. The Arduino Pro was designed and manufactured by SparkFun Electronics.
You can find here your board warranty information.
Arduino PRO is open-source hardware! You can build your own board using the following files:
The Arduino Pro can be powered via the USB header, with a battery, or with an external power supply. The battery power jack is a JST header. A power jack for an external supply can be soldered to the board. The power pins are as follows:
The ATmega328 has 32KB of flash, 2KB of SRAM, and 1KB of EEPROM.
Each of the 14 digital pins on the Pro can be used as an input or output, using pinMode,digitalWrite, and digitalRead functions. They operate at 3.3 or 5 volts (depending on the model). They operate at 3.3 volts. Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. In addition, some pins have specialized functions:
The Arduino Pro has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega328 provides UART TTL serial communication, which is available on digital pins 0 (RX) and 1 (TX). The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Arduino board via a USB connection.
A SoftwareSerial library allows for serial communication on any of the Pro's digital pins.
The ATmega328 also supports I2C (TWI) and SPI communication. The Arduino software includes a Wire library to simplify use of the I2C bus; see the reference for details. To use the SPI communication, please see the ATmega328 datasheet.
The Arduino Pro can be programmed with the Arduino software download. For details, see thereference and tutorials. The ATmega328 on the Arduino Pro comes preburned with a bootloaderthat allows you to upload new code to it without the use of an external hardware programmer. It communicates using the original STK500 protocol reference, C header files.
You can also bypass the bootloader and program or ATmega328 with an external programmer; seethese instructions for details.
Rather then requiring a physical press of the reset button before an upload, the Arduino Pro is designed in a way that allows it to be reset by software running on a connected computer. One of the pins on the six-pin header is connected to the reset line of the ATmega328 via a 100 nanofarad capacitor. This pin connects to one of the hardware flow control lines of the USB-to-serial converter connected to the header: RTS when using an FTDI cable, DTR when using the Sparkfun breakout board. When this line is asserted (taken low), the reset line drops long enough to reset the chip.
The Arduino software uses this capability to allow you to upload code by simply pressing the upload button in the Arduino environment. This means that the bootloader can have a shorter timeout, as the lowering of the reset line can be well-coordinated with the start of the upload.
This setup has other implications. When the Pro is connected to either a computer running Mac OS X or Linux, it resets each time a connection is made to it from software (via USB). For the following half-second or so, the bootloader is running on the Pro. While it is programmed to ignore malformed data (i.e. anything besides an upload of new code), it will intercept the first few bytes of data sent to the board after a connection is opened.
If a sketch running on the board receives one-time configuration or other data when it first starts, make sure that the software with which it communicates waits a second after opening the connection and before sending this data.
The maximum length and width of the Pro PCB are 2.05 and 2.10 inches respectively, with the six pin header and power switch extending slightly beyond the edges. Four screw holes allow the board to be attached to a surface or case. Note that the distance between digital pins 7 and 8 is 160 mil (0.16"), not an even multiple of the 100 mil spacing of the other pins.
|Board Power Supply||3.35 -12 V (3.3V model) or 5 - 12 V (5V model)|
|Circuit Operating Voltage||3.3V or 5V (depending on model)|
|Digital I/O Pins||14|
|Analog Input Pins||6|
|DC Current per I/O Pin||40mA|
|Flash Memory||32KB of which 2KB used by bootloader|
|Clock Speed||8MHz (3.3V versions) or 16MHz (5V versions)|