Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO as the central microcontroller, two servo motors, a power source consisting of 2x 18650 batteries, a rocker switch for power control, two LEDs (one green and one red), and an RFID-RC522 module for RFID communication. The Arduino UNO is responsible for controlling the servos and LEDs, as well as interfacing with the RFID module. The circuit is powered by the 18650 batteries, with the rocker switch acting as an on/off control.

Component List

Arduino UNO

• Microcontroller board based on the ATmega328P
• It has 14 digital input/output pins, 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header, and a reset button.

Servo (x2)

• A rotary actuator or linear actuator that allows for precise control of angular or linear position, velocity, and acceleration.
• It consists of a suitable motor coupled to a sensor for position feedback.

2x 18650 Batteries

• Rechargeable lithium-ion cells
• Commonly used in high-performance electronics.

Rocker Switch

• A switch that rocks back and forth when pressed, which means one side of the switch is raised while the other side is depressed.
• Used to open or close an electrical circuit.

LED: Two Pin (Green)

• A green light-emitting diode that emits light when a current flows through it.

LED: Two Pin (Red)

• A red light-emitting diode that emits light when a current flows through it.

RFID-RC522

• A highly integrated read and write card chip for 13.56MHz contactless communication.
• Used for RFID communication.

Wiring Details

Arduino UNO

• 3.3V connected to RFID-RC522 VCC (3.3V)
• 5V connected to both Servo VCC pins
• GND connected to Servo GND pins, LED cathodes, and RFID-RC522 GND
• Vin connected to the rocker switch output
• D13 connected to RFID-RC522 SCK
• D12 connected to RFID-RC522 MISO
• D11 connected to RFID-RC522 MOSI
• D10 connected to RFID-RC522 SDA
• D9 connected to RFID-RC522 RST
• D5 connected to the anode of the green LED
• D4 connected to the anode of the red LED
• D3 connected to the pulse pins of both Servos

Servo Motors

• VCC connected to Arduino UNO 5V
• GND connected to Arduino UNO GND
• Pulse connected to Arduino UNO D3

2x 18650 Batteries

• VCC connected to the rocker switch input
• GND connected to Arduino UNO GND

Rocker Switch

• Input connected to 2x 18650 VCC
• Output connected to Arduino UNO Vin

LED: Two Pin (Green)

• Anode connected to Arduino UNO D5
• Cathode connected to Arduino UNO GND

LED: Two Pin (Red)

• Anode connected to Arduino UNO D4
• Cathode connected to Arduino UNO GND

RFID-RC522

• VCC (3.3V) connected to Arduino UNO 3.3V
• RST connected to Arduino UNO D9
• GND connected to Arduino UNO GND
• IRQ not connected
• MISO connected to Arduino UNO D12
• MOSI connected to Arduino UNO D11
• SCK connected to Arduino UNO D13
• SDA connected to Arduino UNO D10

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:

}

Note: The provided code is a template and does not include specific functionality. It should be populated with the necessary setup and loop code to control the servos, LEDs, and RFID-RC522 module as required by the circuit's purpose.