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Arduino UNO Battery-Powered Data Logger with Micro SD Card Storage

Image of Arduino UNO Battery-Powered Data Logger with Micro SD Card Storage

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.