Arduino Circuit Schematic. The arduino uno is really a microcontroller board based on the atmega328. It has 14 digital input output pins of which 6 may be employed as pwm outputs 6 analog inputs a 16 mhz crystal oscillator a usb connection a power jack an icsp header along with a reset button.
Select your component combination and instantly get a detailed list of parts a step by step wiring guide and custom test code for your circuit. Arduino uno reference design usb boot en tm reference designs are provided as is and with all faults. Adc5 pc5 28 adc4 pc4 27 adc3 pc3 26 adc2 pc2 25 adc1 pc1 24 adc0 pc0 23 sck pb5 19 miso pb4 18 mosi pb3 17 ss pb2 16 oc1 pb1 15 icp pb0 14 ain1 pd7 13 ain0 pd6.
On boards using the arduino bootloader i add a pull up for the auto reset circuit.
The arduino uno is really a microcontroller board based on the atmega328. A breadboard jumper wires an led a 220 ohm resistor arduino uno. Arduino uno reference design usb boot en tm reference designs are provided as is and with all faults. Arduino disclaims all other warranties express or implied arduino may make changes to specifications and product descriptions at any time without notice.
