Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux).
This is the new, smaller, Arduino Mini 05 with ATmega328. The latest version of this board is built around a smaller ATmega328 package, allowing all of the parts to be populated on the top side of the board. Of course, it still requires an external serial connection for programming.
The Arduino Mini 05 is a great development module for building compact devices that need to interact with the world around them.
Warning: Don't power the Arduino mini with more than 9 volts, or plug the power in backwards: you'll probably kill it.
-Microcontroller : ATmega328
-Operating Voltage : 5V
-Input Voltage : 7-9 V
-Digital I/O Pins : 14 (of which 6 provide PWM output)
-Analog Input Pins : 8 (of which 4 are broken out onto pins)
-DC Current per I/O Pin : 40 mA
-Flash Memory : 32 KB (of which 2 KB used by bootloader)
-SRAM : 2 KB
-EEPROM : 1 KB
-Clock Speed : 16 MHz
The Arduino Mini can be programmed with the Arduino software .
To program the Arduino Mini, you will need a USB Serial adapter or other USB or RS232 to TTL serial adapter. See the page on getting started with the Arduino Mini for instructions.
The ATmega328 on the Arduino Mini comes preburned with a bootloader that allows you to upload new code to it without the use of an in-system-programmer. The bootloader communicates using the original STK500 protocol (reference, C header files).
You can also bypass the bootloader and program the ATmega328 with ICSP (In-Circuit Serial Programming); see the page on bootloading the Mini for information on wiring up an ICSP header to the Mini and the programmer for instructions on using a programmer to upload a sketch.
Input and Output
Each of the 14 digital pins on the Mini can be used as an input or output. They operate at 5 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. Pins 3, 5, 6, 9, 10, and 11 can provide PWM output; for details see the analogWrite() function. If anything besides the Mini USB (or other) adapter is connected to pins 0 and 1, it will interfere with the USB communication, preventing new code from being uploaded or other communication with the computer.
The Mini has 8 analog inputs, each of which provide 10 bits of resolution (i.e. 1024 different values). Inputs 0 to 3 are broken out onto pins; input 4 to 7 require soldering into the provided holes. By default the analog inputs measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and some low-level code.
ATmega168/328-Arduino Pin Mapping
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