Circuit arduino uno r3 pin diagram. The arduino uno r3 pin diagram is shown below. Barrel jack the barrel jack or dc power jack can be used to power your arduino board. From these pins 6 pins can be utilized like pwm outputs. It comprises 14 digit io pins.
Check out this handy arduino r3 pinout diagram and write up from nick gammon. This arduino uno pinout diagram reference will hopefully help you get the most out of this board. Regulated power supply used to power microcontroller and other components on the board. Maximum current draw is 50ma.
Andrea reali may 29th 2012. Input voltage to arduino when using an external power source. Arduino uno pin diagram click the image to enlarge it pin description. Adc5pc5 28 adc4pc4 27 adc3pc3 26 adc2pc2 25 adc1pc1 24 adc0pc0 23 sckpb5 19 misopb4 18 mosipb3 17 sspb2 16 oc1pb1 15 icppb0 14 ain1pd7 13 ain0pd6.
There are 3 ways to power the arduino uno. The original post from nick gammon is old but im pretty sure can still be useful. The barrel jack is usually connected. Arduino uno pinout diagram pinout of arduino board and atmega328pu by pighixxx is licensed under creative commons attribution share alike 40 international arduino uno pinout power supply.
33v supply generated by on board voltage regulator. Also included is the complete schematic diagram of the arduino uno revision 3. Vin 33v 5v gnd. The arduino uno is arguably the most popular arduino board currently available.
He hits a lot of the important points here and in addition he explains the limits of all the pins and interfaces in the rest of the post.