Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller, a TP4056 battery charger, a 18650 battery in a holder, a DC-DC converter, an Adafruit NeoPixel Stick, an ADXL345 accelerometer, an ILI9341 TFT display, and several resistors. The circuit is designed to control an LED strip and display information on a TFT screen while being powered by a rechargeable battery.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: SDA, AREF, GND, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, A5, A4, A3, A2, A1, A0, Vin, 5V, 3.3V, RESET, IOREF, SCL

TP4056

• Description: A lithium-ion battery charger module.
• Pins: OUT-, B-, B+, OUT+, IN-, IN+

18650 in holder

• Description: A holder for a 18650 lithium-ion battery.
• Pins: GND, VCC

DC-DC Converter

• Description: A module to convert DC voltage levels.
• Pins: +VCC IN, GND IN, +VCC OUT, GND OUT

Adafruit NeoPixel Stick

• Description: An LED strip with individually addressable RGB LEDs.
• Pins: GND, DATAOUT, +5V, DATAIN

Resistor (150 Ohms)

• Description: A resistor with a resistance of 150 Ohms.
• Pins: pin1, pin2

Resistor (1000 Ohms)

• Description: A resistor with a resistance of 1000 Ohms.
• Pins: pin1, pin2

ADXL345

• Description: A 3-axis accelerometer.
• Pins: GND, VCC, CS, INT1, INT2, SDO, SDA, SCL

ILI9341 TFT Display

• Description: A TFT display module.
• Pins: SD_CS, SD_MOSI, SD_MISO, SD_SCK, VCC, GND, CS, RESET, D/C, SD(MOSI), SCK, LED, SDO(MISO), T_CLK, T_CS, T_DIN, T_OUT, T_IRQ

Wiring Details

Arduino UNO

• Pin 13: Connected to pin1 of a 1000 Ohms resistor.
• Pin 11: Connected to pin1 of a 1000 Ohms resistor.
• Pin 10: Connected to pin1 of a 1000 Ohms resistor.
• Pin 9: Connected to pin1 of a 1000 Ohms resistor.
• Pin 8: Connected to pin1 of a 1000 Ohms resistor.
• Pin 5: Connected to DATAIN of the Adafruit NeoPixel Stick.
• Pin A5: Connected to SCL of the ADXL345.
• Pin A4: Connected to SDA of the ADXL345.
• Pin Vin: Connected to +5V of the Adafruit NeoPixel Stick and +VCC OUT of the DC-DC converter.
• Pin GND: Connected to GND OUT of the DC-DC converter, GND of the ILI9341 TFT display, GND of the ADXL345, and GND of the Adafruit NeoPixel Stick.
• Pin 5V: Connected to VCC of the ILI9341 TFT display and VCC of the ADXL345.
• Pin 3.3V: Connected to pin1 of a 150 Ohms resistor.

TP4056

• OUT-: Connected to GND IN of the DC-DC converter.
• B-: Connected to GND of the 18650 in holder.
• B+: Connected to VCC of the 18650 in holder.
• OUT+: Connected to +VCC IN of the DC-DC converter.

18650 in holder

• GND: Connected to B- of the TP4056.
• VCC: Connected to B+ of the TP4056.

DC-DC Converter

• +VCC IN: Connected to OUT+ of the TP4056.
• GND IN: Connected to OUT- of the TP4056.
• +VCC OUT: Connected to Vin of the Arduino UNO and +5V of the Adafruit NeoPixel Stick.
• GND OUT: Connected to GND of the Arduino UNO.

Adafruit NeoPixel Stick

• DATAIN: Connected to pin 5 of the Arduino UNO.
• +5V: Connected to Vin of the Arduino UNO and +VCC OUT of the DC-DC converter.
• GND: Connected to GND of the Arduino UNO.

ADXL345

• SCL: Connected to pin A5 of the Arduino UNO.
• SDA: Connected to pin A4 of the Arduino UNO.
• GND: Connected to GND of the Arduino UNO.
• VCC: Connected to 5V of the Arduino UNO.

ILI9341 TFT Display

• GND: Connected to GND of the Arduino UNO.
• VCC: Connected to 5V of the Arduino UNO.
• LED: Connected to pin2 of a 150 Ohms resistor.
• CS: Connected to pin2 of a 1000 Ohms resistor.
• RESET: Connected to pin2 of a 1000 Ohms resistor.
• D/C: Connected to pin2 of a 1000 Ohms resistor.
• SD(MOSI): Connected to pin2 of a 1000 Ohms resistor.
• SCK: Connected to pin2 of a 1000 Ohms resistor.

Code Documentation

Arduino UNO Code

#include "Adafruit_NeoPixel.h"

#define LED_COUNT 5
#define LED_PIN 5

Adafruit_NeoPixel strip = Adafruit_NeoPixel(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin(); // Initialize the strip.
}

void loop() {
  for (int i = 0; i < LED_COUNT; i++) {
    strip.setPixelColor(i, strip.Color(255, 0, 0)); // Red color.
    strip.show();
    delay(300);
  }
  for (int i = 0; i < LED_COUNT; i++) {
    strip.setPixelColor(i, strip.Color(0, 0, 0)); // Turn off.
  }
  strip.show();
  delay(300);
}

Adafruit NeoPixel Stick Code

#include "Adafruit_NeoPixel.h"

#define LED_COUNT 5
#define LED_PIN 5

Adafruit_NeoPixel strip = Adafruit_NeoPixel(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin(); // Initialize the strip.
}

void loop() {
  for (int i = 0; i < LED_COUNT; i++) {
    strip.setPixelColor(i, strip.Color(255, 0, 0)); // Red color.
    strip.show();
    delay(300);
  }
  for (int i = 0; i < LED_COUNT; i++) {
    strip.setPixelColor(i, strip.Color(0, 0, 0)); // Turn off.
  }
  strip.show();
  delay(300);
}

This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used for the microcontrollers.