Circuit Documentation

Summary

This circuit is designed to control a vacuum pump, servo motors, a linear actuator, and an Adafruit 2.8inch Resistive TFT display, all interfaced with an Arduino Mega 2560 microcontroller. The circuit includes a power supply for 12V components and a BMP180 sensor for pressure or temperature measurements. The Arduino Mega 2560 is the central processing unit, controlling the various actuators and reading sensor data. A resistor and an N-Channel Power MOSFET are used to control the vacuum pump's power through one of the Arduino's PWM pins.

Component List

Vacuum Pump - 12V

• Pins: Power/IN, GND / OUT
• Description: A 12V vacuum pump used for creating suction.

STP16NF06 N-Channel Power MOSFET

• Pins: gate, drain, source
• Description: A power MOSFET used as a switch to control high current loads with a low voltage signal.

Resistor

• Pins: pin1, pin2
• Description: A resistor with a resistance of 10,000 Ohms, used for current limiting or voltage division.

USB Plug

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

Arduino Mega 2560

• Pins: Multiple digital and analog pins, power, and ground pins.
• Description: A microcontroller board based on the ATmega2560, used for controlling the various components in the circuit.

12V Power Supply

• Pins: +, -
• Description: A power supply unit that provides 12V to power the components that require it.

BMP180

• Pins: 3.3, SDA, SCL, GND, VCC
• Description: A digital barometric pressure sensor that can be used for weather forecasting, altitude sensing, or any other application where accurate pressure readings are needed.

Servo

• Pins: GND, VCC, PWM
• Description: A rotary actuator or linear actuator that allows for precise control of angular or linear position, velocity, and acceleration.

Linear Actuator

• Pins: +, -
• Description: An actuator that creates motion in a straight line, in contrast to the circular motion of a conventional electric motor.

L298N DC Motor Driver

• Pins: Multiple control and power pins.
• Description: A motor driver module that allows the microcontroller to control two DC motors or one stepper motor.

Adafruit 2.8inch Resistive TFT

• Pins: Multiple data and control pins.
• Description: A small touchscreen display for user interface or data display purposes.

Wiring Details

Vacuum Pump - 12V

• Power/IN: Connected to the drain of the STP16NF06 N-Channel Power MOSFET.
• GND / OUT: Connected to the source of the STP16NF06 N-Channel Power MOSFET.

STP16NF06 N-Channel Power MOSFET

• Gate: Connected to pin2 of the Resistor and D2 PWM of the Arduino Mega 2560.
• Drain: Connected to Power/IN of the Vacuum Pump - 12V.
• Source: Connected to GND / OUT of the Vacuum Pump - 12V, pin1 of the Resistor, and GND of multiple components including the BMP180, Adafruit 2.8inch Resistive TFT, Arduino Mega 2560, and both Servos.

Resistor

• Pin1: Connected to the source of the STP16NF06 N-Channel Power MOSFET.
• Pin2: Connected to the gate of the STP16NF06 N-Channel Power MOSFET and D2 PWM of the Arduino Mega 2560.

Arduino Mega 2560

• D2 PWM: Connected to the gate of the STP16NF06 N-Channel Power MOSFET through the Resistor.
• GND: Connected to the source of the STP16NF06 N-Channel Power MOSFET and GND of multiple components.
• 5V: Connected to VIN of the Adafruit 2.8inch Resistive TFT and 5V of the L298N DC Motor Driver.
• VIN: Connected to 12V of the L298N DC Motor Driver and Power/IN of the Vacuum Pump - 12V.
• 3V3: Connected to 3.3 of the BMP180.
• A0-A3: Connected to various control pins of the Adafruit 2.8inch Resistive TFT.
• D21/SCL, D20/SDA: Connected to SCL and SDA of the BMP180, respectively.
• D0 RX0 - D13 PWM: Connected to various data pins of the Adafruit 2.8inch Resistive TFT.
• D4 PWM, D5 PWM: Connected to IN2 and IN1 of the L298N DC Motor Driver, respectively.
• D6 PWM, D7 PWM: Connected to PWM of both Servos.
• D8 PWM: Connected to LCD_DATA7 of the Adafruit 2.8inch Resistive TFT.
• D9 PWM: Connected to ENA of the L298N DC Motor Driver.
• D10 PWM - D13 PWM: Connected to LCD_DATA5 - LCD_DATA2 of the Adafruit 2.8inch Resistive TFT, respectively.

BMP180

• 3.3: Connected to 3V3 of the Arduino Mega 2560.
• SDA, SCL: Connected to D20/SDA and D21/SCL of the Arduino Mega 2560, respectively.
• GND: Connected to the source of the STP16NF06 N-Channel Power MOSFET.

Servos

• GND: Connected to the source of the STP16NF06 N-Channel Power MOSFET.
• VCC: Connected to 12V of the L298N DC Motor Driver.
• PWM: Connected to D6 PWM and D7 PWM of the Arduino Mega 2560, respectively.

Linear Actuator

• +: Connected to OUT1 of the L298N DC Motor Driver.
• -: Connected to OUT2 of the L298N DC Motor Driver.

L298N DC Motor Driver

• GND: Connected to the source of the STP16NF06 N-Channel Power MOSFET.
• 5V: Connected to 5V of the Arduino Mega 2560.
• 12V: Connected to VIN of the Arduino Mega 2560.
• IN1, IN2: Connected to D5 PWM and D4 PWM of the Arduino Mega 2560, respectively.
• ENA: Connected to D9 PWM of the Arduino Mega 2560.
• OUT1, OUT2: Connected to + and - of the Linear Actuator, respectively.

Adafruit 2.8inch Resistive TFT

• GND: Connected to the source of the STP16NF06 N-Channel Power MOSFET.
• VIN: Connected to 5V of the Arduino Mega 2560.
• LCD_RD, LCD_WR_DC, LCD_CD_SCK, LCD_CS: Connected to A0, A1, A2, A3 of the Arduino Mega 2560, respectively.
• LCD_DATA0 - LCD_DATA7: Connected to D0 RX0, D1 TX0, D3 PWM, D8 PWM, D10 PWM, D11 PWM, D12 PWM, D13 PWM of the Arduino Mega 2560, respectively.

Documented Code

Arduino Mega 2560 Code (sketch.ino)

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

}

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

}

The provided code is a template with empty setup() and loop() functions. The setup() function is intended for initialization code that runs once when the microcontroller is powered on or reset. The loop() function contains the main logic of the program, which runs repeatedly as long as the microcontroller is powered.

Additional Notes

• The code for the Arduino Mega 2560 is minimal and does not include any functionality. It needs to be populated with the logic to control the components based on the requirements of the application.
• The documentation file (documentation.txt) for the Arduino Mega 2560 is empty and should be filled with relevant information about the code, such as descriptions of functions, usage of pins, and any libraries used.