Original Circuit Diagram: Arduino UNO R3 Now, have a look at our favorite Arduino UNO to ... You can find numerous ideas, tips and tricks everywhere in internet. Next is the complete schematic diagram ...

Just follow the schematic diagram to complete the construction ... Here, the three LEDs are directly connected to Arduino pins with independent current limiting resistors (R1, R2 and R3) which is ...

"The railgun's electronics are based around an Arduino Uno R3 [circuit board] which monitors the capacitor voltage, amperage, temperature and battery voltage to ensure even charging and operation ...