Arduino Tutorial: Arduino-pull-down-resistor-Beginner Project
components list:
1) Arduino UNO or Nano 1 pice
2) Led 1 pice
3) Resistor(4.7k or 10k) 1 pice
4) Resistor(330ohm or 1k) 1 pice
5) Push Buttom 1 pice
6) some jumper wire
7) Breadboard 1 pice
8) 9-volt battery 1 pice
connection:
Connect the push button between Arduino pin 4 and GND with a resistor(4.7k or 10k), and other side connect 5volt.
led pin to connect with a resistor (330ohm or 1k) in Arduino pin 8.led negative pin connect GND.
code & circuit:
https://github.com/ahmokther/Arduino-...
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