Circuit Documentation

Summary

This circuit consists of an Arduino Nano microcontroller, a blue LED, a reed switch, and a 18650 Li-Ion battery. The Arduino Nano controls the LED and reads the state of the reed switch. The circuit is powered by the 18650 Li-Ion battery.

Component List

Arduino Nano

• Description: A small, complete, and breadboard-friendly board based on the ATmega328P.
• Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK

LED: Two Pin (blue)

• Description: A blue light-emitting diode with two pins.
• Pins: cathode, anode

Reed Switch

• Description: A magnetic switch that closes in the presence of a magnetic field.
• Pins: VCC, GND, DO

18650 Li-Ion

• Description: A rechargeable lithium-ion battery.
• Pins: Positive, Negative

Wiring Details

Arduino Nano

• GND: Connected to the cathode of the LED, GND of the reed switch, and Negative of the 18650 Li-Ion battery.
• D2: Connected to DO of the reed switch.
• VIN: Connected to Positive of the 18650 Li-Ion battery.
• 5V: Connected to VCC of the reed switch.
• D13/SCK: Connected to the anode of the LED.

LED: Two Pin (blue)

• cathode: Connected to GND of the Arduino Nano.
• anode: Connected to D13/SCK of the Arduino Nano.

Reed Switch

• VCC: Connected to 5V of the Arduino Nano.
• GND: Connected to GND of the Arduino Nano.
• DO: Connected to D2 of the Arduino Nano.

18650 Li-Ion

• Positive: Connected to VIN of the Arduino Nano.
• Negative: Connected to GND of the Arduino Nano.

Code Documentation

Arduino Nano Code

sketch.ino

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

documentation.txt

This document provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used in the Arduino Nano.