Circuit Documentation

Summary

This circuit integrates an Arduino UNO microcontroller with a Servomotor SG90 and a 4X4 Membrane Matrix Keypad. The Arduino UNO is powered by a 9V battery and controls the servomotor by sending signals to it. The keypad is interfaced with the Arduino to possibly allow user input for controlling the servomotor or other functions. The servomotor is powered directly from the Arduino's 5V output.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13.

Servomotor SG90

• Description: A small and lightweight servo motor for RC (Radio Controlled) and robotics applications.
• Pins: SIG, VCC, GND.

4X4 Membrane Matrix Keypad

• Description: A simple matrix keypad with 16 buttons arranged in 4 rows and 4 columns.
• Pins: R1-R4, C1-C4.

Battery 9V

• Description: A standard 9V battery used to power electronic circuits.
• Pins: VCC, GND.

Wiring Details

Arduino UNO

• 5V connected to Servomotor SG90 VCC.
• GND connected to Servomotor SG90 GND and Battery 9V GND.
• Vin connected to Battery 9V VCC.
• D11 connected to Servomotor SG90 SIG.
• D9-D2 connected to 4X4 Membrane Matrix Keypad C4-R1 respectively.

Servomotor SG90

• VCC connected to Arduino UNO 5V.
• GND connected to Arduino UNO GND.
• SIG connected to Arduino UNO D11.

4X4 Membrane Matrix Keypad

• R1-R4 connected to Arduino UNO D2-D5 respectively.
• C1-C4 connected to Arduino UNO D6-D9 respectively.

Battery 9V

• VCC connected to Arduino UNO Vin.
• GND connected to Arduino UNO 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 Notes

• The code provided for the Arduino UNO is a template with empty setup and loop functions. Actual functionality needs to be implemented based on the requirements of the circuit's application.
• The documentation file for the Arduino UNO is empty and could be used to provide additional information about the code, such as a detailed description of the functions, usage instructions, or version history.