27+ Circuit Diagram Arduino Uno Schematic Images. Once the circuit design is completed, it's time to make the pcb. The arduino uno is really a microcontroller board based on the atmega328.
You can find more details on the arduino website.
Complete kicad arduino uno r3 schematic and bom. The arduino uno pinout guide includes information you need about the different pins of the arduino uno pinout guide. This arduino uno pinout diagram reference will hopefully help you get the most out of this board. Just like my previous circuit using lm358 this is also very cheap,also under 100 rupees.