Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino Pro Mini as the central microcontroller, interfaced with various sensors and modules including a DS18B20 Temperature Sensor, GPS NEO 6M module, ADXL345 accelerometer, NRF24L01 wireless communication module, and a voltage regulator. The circuit is powered by an 18650 Li-Ion battery and includes a pushbutton and resistors for input and signal conditioning.

Component List

Arduino Pro Mini

• Microcontroller board based on the ATmega328
• Operating Voltage: 3.3V or 5V (depending on the model)
• Digital I/O Pins: 14 (of which 6 provide PWM output)
• Analog Input Pins: 8
• Clock Speed: 8 MHz or 16 MHz

DS18B20 Temperature Sensor

• Programmable resolution temperature sensor
• Operating Voltage: 3.0V to 5.5V
• Output: Digital signal via a one-wire bus

GPS NEO 6M

• GPS module with ceramic antenna
• Operating Voltage: 3.3V to 5V
• Communication: Serial (TX/RX)

ADXL345

• 3-axis accelerometer with high resolution (13-bit)
• Operating Voltage: 2.0V to 3.6V
• Communication: I2C/SPI

NRF24L01

• 2.4GHz wireless transceiver module
• Operating Voltage: 1.9V to 3.6V
• Communication: SPI

Voltage Regulator

• Regulates input voltage to a stable output voltage
• Input Voltage (IN): Typically higher than the output
• Output Voltage (OUT): Regulated voltage

Pushbutton

• Momentary pushbutton switch
• Typically used as a user input device

Resistor (200 Ohms)

• Resistance: 200 Ohms
• Used for current limiting or voltage division

Resistor (4700 Ohms)

• Resistance: 4700 Ohms
• Used for current limiting or voltage division

18650 Li-Ion Battery

• Rechargeable battery
• Nominal Voltage: 3.7V

Wiring Details

Arduino Pro Mini

• TXO connected to GPS NEO 6M RX
• RXI connected to GPS NEO 6M TX
• VCC connected to GPS NEO 6M VCC, ADXL345 VCC, Pushbutton Pin 1 (in), DS18B20 VCC, and Resistor (4700 Ohms) pin1
• GND connected to NRF24L01 GND, GPS NEO 6M GND, Pushbutton Pin 2 (in), ADXL345 GND, and DS18B20 GND
• A4 connected to ADXL345 SDA
• A5 connected to ADXL345 SCL
• RAW connected to 18650 Li-Ion Battery Positive through Voltage Regulator IN
• D3 connected to Pushbutton Pin 3 (out)
• D2 connected to DS18B20 OUT through Resistor (4700 Ohms) pin2
• SCK, MISO, MOSI connected to NRF24L01 SCK, MISO, MOSI respectively
• D8 connected to NRF24L01 CSN
• D7 connected to NRF24L01 CE

DS18B20 Temperature Sensor

• GND connected to common ground
• VCC connected to common VCC
• OUT connected to Arduino Pro Mini D2 through Resistor (4700 Ohms)

GPS NEO 6M

• RX connected to Arduino Pro Mini TXO
• TX connected to Arduino Pro Mini RXI
• VCC connected to common VCC
• GND connected to common ground

ADXL345

• GND connected to common ground
• VCC connected to common VCC
• SDA connected to Arduino Pro Mini A4
• SCL connected to Arduino Pro Mini A5

NRF24L01

• GND connected to common ground
• VCC (3V) connected to Voltage Regulator OUT
• CE connected to Arduino Pro Mini D7
• CSN connected to Arduino Pro Mini D8
• SCK connected to Arduino Pro Mini SCK
• MISO connected to Arduino Pro Mini MISO
• MOSI connected to Arduino Pro Mini MOSI

Voltage Regulator

• GND connected to common ground and 18650 Li-Ion Battery Negative
• IN connected to 18650 Li-Ion Battery Positive
• OUT connected to NRF24L01 VCC (3V)

Pushbutton

• Pin 1 (in) connected to common VCC
• Pin 2 (in) connected to common ground
• Pin 3 (out) connected to Arduino Pro Mini D3

Resistor (200 Ohms)

• Not explicitly connected in the provided net list.

Resistor (4700 Ohms)

• pin1 connected to common VCC
• pin2 connected to Arduino Pro Mini D2 and DS18B20 OUT

18650 Li-Ion Battery

• Positive connected to Voltage Regulator IN and Arduino Pro Mini RAW
• Negative connected to common ground

Documented Code

Arduino Pro Mini (sketch.ino)

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

}

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

}

Additional Notes

• The provided code is a template and does not include any functionality. It needs to be populated with the initialization and operational code for the sensors and modules connected to the Arduino Pro Mini.
• The documentation.txt file is empty and does not contain any additional information.