Arduino Uno R3
Arduino Uno R3
is a microcontroller board based on the ATmega328P (datasheet
). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started. You can tinker with your UNO without worrying too much about doing something wrong, worst case scenario you can replace the chip for a few dollars and start over again.
The Uno board is the first in a series of USB Arduino boards and the reference model for the Arduino platform; for an extensive list of current, past or outdated boards see the Arduino index of boards.
You can download the software for free on the Arduino official website.
If I may be so bold to ask – please donate when downloading the software, the Arduino guys do not make any money out of these clone (but 100% identical boards) we sell. You can donate as little as $3.00. Think of it this way – you can get all the Arduino software and upgrades for the rest of your life for only $3.00. Yes, you can get it free but your $3.00 make this a win-win thing for all.On the Arduino IDE download page is an option to donate Arduino – Donate
|Input Voltage (recommended)
|Input Voltage (limit)
|Digital I/O Pins
||14 (of which 6 provide PWM output)
|PWM Digital I/O Pins
|Analog Input Pins
|DC Current per I/O Pin
|DC Current for 3.3V Pin
||32 KB (ATmega328P)
of which 0.5 KB used by bootloader
||2 KB (ATmega328P)
||1 KB (ATmega328P)
Here is a very descriptive pinout diagram we’ve found
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