Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino Nano, a temperature sensor, a pH meter, a spectroscopy sensor, an op-amp, resistors, a capacitor, and a battery mount. The circuit is designed to measure temperature, pH levels, and spectral data, and it is powered by a 4 x AAA battery mount.

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

Temperature Sensor

• Description: A sensor used to measure temperature.
• Pins: Temp GND Black, Temp VDD Red, Temp DQ Data Yellow

4 x AAA Battery Mount

• Description: A battery holder for four AAA batteries.
• Pins: -, +

SparkFun Triad Spectroscopy Sensor - AS7265x (Qwicc)

• Description: A sensor used for spectroscopy measurements.
• Pins: RST, INT, SCL, SDA, 3V3, GND

PH Meter

• Description: A sensor used to measure pH levels.
• Pins: Signal, VCC, GND

LM358 Op-Amp

• Description: A dual operational amplifier.
• Pins: 8, 1, 2, 3, 4, 5, 6, 7

Resistor (200 Ohms)

• Description: A resistor with a resistance of 200 Ohms.
• Pins: pin1, pin2

Electrolytic Capacitor (1 µF)

• Description: A capacitor with a capacitance of 1 µF.
• Pins: -, +

Wiring Details

Arduino Nano

• GND: Connected to the GND pin of the Electrolytic Capacitor, SparkFun Triad Spectroscopy Sensor, Temperature Sensor, PH Meter, and the - pin of the 4 x AAA Battery Mount.
• 5V: Connected to pin 8 of the LM358 Op-Amp, Temp VDD Red pin of the Temperature Sensor, and VCC pin of the PH Meter.
• A1: Connected to pin2 of the Resistor and the + pin of the Electrolytic Capacitor.
• D2: Connected to the Temp DQ Data Yellow pin of the Temperature Sensor.
• D3: Connected to the RST pin of the SparkFun Triad Spectroscopy Sensor.
• D4: Connected to the INT pin of the SparkFun Triad Spectroscopy Sensor.
• VIN: Connected to the + pin of the 4 x AAA Battery Mount.
• A5: Connected to the SCL pin of the SparkFun Triad Spectroscopy Sensor.
• A4: Connected to the SDA pin of the SparkFun Triad Spectroscopy Sensor.
• 3V3: Connected to the 3V3 pin of the SparkFun Triad Spectroscopy Sensor.

Temperature Sensor

• Temp GND Black: Connected to the GND pin of the Arduino Nano.
• Temp VDD Red: Connected to the 5V pin of the Arduino Nano.
• Temp DQ Data Yellow: Connected to the D2 pin of the Arduino Nano.

4 x AAA Battery Mount

• -: Connected to the GND pin of the Arduino Nano.
• +: Connected to the VIN pin of the Arduino Nano.

SparkFun Triad Spectroscopy Sensor - AS7265x (Qwicc)

• GND: Connected to the GND pin of the Arduino Nano.
• RST: Connected to the D3 pin of the Arduino Nano.
• INT: Connected to the D4 pin of the Arduino Nano.
• SCL: Connected to the A5 pin of the Arduino Nano.
• SDA: Connected to the A4 pin of the Arduino Nano.
• 3V3: Connected to the 3V3 pin of the Arduino Nano.

PH Meter

• GND: Connected to the GND pin of the Arduino Nano.
• VCC: Connected to the 5V pin of the Arduino Nano.
• Signal: Connected to pin1 of the Resistor.

LM358 Op-Amp

• Pin 8: Connected to the 5V pin of the Arduino Nano.

Resistor (200 Ohms)

• Instance 1:

  • pin1: Connected to the Signal pin of the PH Meter.
  • pin2: Connected to pin2 of another Resistor.

• Instance 2:

  • pin1: Connected to pin1 of another Resistor.
  • pin2: Connected to pin2 of another Resistor.

• Instance 3:

  • pin1: Connected to pin1 of another Resistor.
  • pin2: Connected to the + pin of the Electrolytic Capacitor and A1 pin of the Arduino Nano.

Electrolytic Capacitor (1 µF)

• -: Connected to the GND pin of the Arduino Nano.
• +: Connected to pin2 of the Resistor and A1 pin of the Arduino Nano.

Documented Code

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 (documentation.txt)

This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and documented code.