Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO, a Micro SD Card Module, a USB Plug, a Rocker Switch (SPST), and two 18650 Li-ion Batteries. The circuit is designed to interface the Arduino with a Micro SD Card for data storage, powered by the batteries and controlled via a USB connection and a rocker switch.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

Micro SD Card Module

• Description: A module used to interface with a micro SD card for data storage.
• Pins: cs, sck, mosi, miso, vcc, gnd

USB Plug

• Description: A standard USB plug for power and data transfer.
• Pins: GND, D+, D-, 5V+, Out

Rocker Switch (SPST)

• Description: A single-pole single-throw switch used to control the power supply.
• Pins: 1, 2

18650 Li-ion Battery x 2

• Description: Two 18650 Li-ion batteries used to power the circuit.
• Pins: +, -

Wiring Details

Arduino UNO

• D4 connected to Micro SD Card Module cs
• D7 connected to Micro SD Card Module sck
• D5 connected to Micro SD Card Module mosi
• D6 connected to Micro SD Card Module miso
• 5V connected to Micro SD Card Module vcc
• GND connected to Micro SD Card Module gnd
• GND connected to USB Plug GND
• Vin connected to USB Plug 5V+ and Rocker Switch (SPST) 2
• D1 connected to USB Plug D+
• D0 connected to USB Plug D-

Micro SD Card Module

• cs connected to Arduino UNO D4
• sck connected to Arduino UNO D7
• mosi connected to Arduino UNO D5
• miso connected to Arduino UNO D6
• vcc connected to Arduino UNO 5V
• gnd connected to Arduino UNO GND

USB Plug

• GND connected to Arduino UNO GND and 18650 Li-ion Battery -
• 5V+ connected to Arduino UNO Vin and Rocker Switch (SPST) 2
• D+ connected to Arduino UNO D1
• D- connected to Arduino UNO D0

Rocker Switch (SPST)

• 1 connected to 18650 Li-ion Battery +
• 2 connected to USB Plug 5V+ and Arduino UNO Vin

18650 Li-ion Battery x 2

• + connected to Rocker Switch (SPST) 1
• - connected to USB Plug GND

Documented Code

Arduino UNO Code (sketch.ino)

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

}

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

}

Additional Documentation (documentation.txt)

This document provides a comprehensive overview of the circuit, including the components used, their connections, and the code running on the Arduino UNO.