Well, it depends on what you have attached to the Arduino. If you are using the pins to do things you will definitely require more current.If you are only want to ONLY power the Arduino, then I calculated what I think it should be below. (You should also check with someone who owns this device for an experimental value, and not just a calculated value. )Based on the datasheet (fig 30-8, p 319), I would say the the processor will draw around 2.4 mA at 5 volts.The USB chip draws around 15 mA depending on several things (p 18)Then you have 2 LEDs with 680 ohm resistors. (Assuming 2 volt drop for each led)(5-2)/680 = around 4 mA per led.So depending on how much you use the serial port, and the LEDs I would guess around (2.4 + 15 + 4.4) = 33.4 mA33.4 mA.
. Arduino UNO Arduino UNO is one of the most famous board in Arduino family after Arduino Duemilanove. It is the latest design of the basic USB board. It comes with 6 analog inputs, 14 digitals output where 6 of themsupport PWM, and 16Mhz cloc.
5V = 0.167 WattsI suspect you want to know to the total amount of power the Arduino can source, which is a bit harder to calculate.The pins can provide up to 200 mA. (p 303 )So 33.4 + 200 = 233.4I would also add a 20% safety margin (around 50 mA)So I would want a 280 mA supply, if I was going to attach the Arduino to different things.280 mA. 5 = 1.4 WattsLet me know if my numbers are way off.P.S.: Be careful making your own supply.
It is critical that the voltage be very stable. An unstable supply can/will destroy an Ardiuno. I suggest using a, like the. Or maybe the.
'Each of the 14 digital pins on the Nano can be used as an input or output.' There are 6 analog input pins which are also digital pins, you must take those into account.However, Note 3 under Table 32-2 of the '328P datasheet says:'Although each I/O port can source more than the test conditions (20mA at VCC = 5V, 10mA at VCC = 3V) under steady state conditions (non-transient), the following must be observed:3.1.
The sum of all IOH, for ports C0 - C5, D0- D4, ADC7, RESET should not exceed 100mA.3.2. The sum of all IOH, for ports B0 - B5, D5 - D7, ADC6, XTAL1, XTAL2 should not exceed 100mA.(but ADC6 and ADC7 are analog input only, and should not be sourcing current)So I would suggest that to keep your Nano healthy, 200mA x 5V = 1W be considered for the IO, and then the amounts noted above for the Power LED, L LED (which is driven by D13), and internal running of the chip be taken into account.
I installed Arduino IDE from the Windows Store. There were hiccups in USB driver installation under my Windows 10. Solution that I found: Arduino Uno: - Will mostly work out of the box. If not recognized, install the drivers from Microsoft Windows 10 update site.
Arduino Nano: - Windows 10 built-in installers are not working. Download the Zipped version of Arduino IDE (meant for non-admin installation) from Arduino web site. Choose the folder 'drivers' and unzip it somewhere. Run the program dpinst-amd64.exe found under 'drivers' folder.