Circuit Documentation

Summary

This circuit involves an Arduino Nano microcontroller interfacing with various components including an RGB LED, nMOS transistors, resistors, an IR receiver, a 16x2 I2C LCD, a solenoid, a DC motor, a TP4056 battery charger, a polymer lithium-ion battery, a rocker switch, a pushbutton, diodes, and an MT3608 DC-DC converter. The circuit is designed to control the RGB LED, solenoid, and motor, display information on the LCD, and receive IR signals.

Component List

1. Arduino Nano

   • Description: Microcontroller board based on the ATmega328P.
   • Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK

2. RGB LED (Wokwi compatible)

   • Description: RGB LED with common anode.
   • Pins: R, COM, G, B

3. nMOS Transistor (MOSFET)

   • Description: n-channel MOSFET transistor.
   • Pins: gate, drain, source

4. Resistor

   • Description: Resistor with various resistance values.
   • Pins: pin1, pin2
   • Properties:
     • Resistance: 220 Ohms
     • Resistance: 1000 Ohms
     • Resistance: 10000 Ohms

5. VS1838B IR Receiver

   • Description: Infrared receiver module.
   • Pins: OUT, GND, VCC

6. 16x2 I2C LCD

   • Description: 16x2 character LCD with I2C interface.
   • Pins: GND, VCC, SDA, SCL

7. TP4056

   • Description: Lithium battery charger module.
   • Pins: OUT-, B-, B+, OUT+, IN-, IN+

8. DC Mini Metal Gear Motor

   • Description: Small DC motor with metal gears.
   • Pins: IN1, IN2

9. Polymer Lithium Ion Battery - Generic

   • Description: Rechargeable lithium-ion battery.
   • Pins: GND, VCC

10. Solenoid

    • Description: Electromagnetic solenoid.
    • Pins: pin1, pin2

11. Diode

    • Description: General-purpose diode.
    • Pins: cathode, anode

12. MT3608

    • Description: DC-DC step-up converter.
    • Pins: VOUT+, VIN+, VOUT-, VIN-

13. Rocker Switch (SPST)

    • Description: Single-pole single-throw rocker switch.
    • Pins: 1, 2

14. Pushbutton

    • Description: Momentary pushbutton switch.
    • Pins: Pin 2, Pin 1, Pin 3, Pin 4

15. LM2596

    • Description: DC-DC buck converter.
    • Pins: IN, OUT

Wiring Details

Arduino Nano

• D13/SCK to nMOS Transistor (MOSFET) gate
• D12/MISO to Resistor pin1
• D11/MOSI to Resistor pin1
• D8 to Pushbutton Pin 1
• D7 to Resistor pin2
• D6 to Resistor pin2
• A4 to 16x2 I2C LCD SDA
• D5 to Resistor pin1
• A5 to 16x2 I2C LCD SCL
• D4 to Resistor pin2

RGB LED (Wokwi compatible)

• COM to VS1838B IR Receiver VCC, 16x2 I2C LCD VCC, MT3608 VOUT+
• R to Resistor pin2
• G to Resistor pin1
• B to Resistor pin1

nMOS Transistor (MOSFET)

• gate to Arduino Nano D13/SCK
• source to VS1838B IR Receiver GND, LM2596 OUT, MT3608 VOUT-, Pushbutton Pin 3, TP4056 OUT-, MT3608 VIN-
• drain to DC Mini Metal Gear Motor IN2

Resistor

• pin1 to Arduino Nano D12/MISO
• pin1 to Arduino Nano D11/MOSI
• pin2 to Arduino Nano D7
• pin2 to Arduino Nano D6
• pin1 to Arduino Nano D5
• pin2 to Arduino Nano D4
• pin1 to VS1838B IR Receiver OUT
• pin2 to nMOS Transistor (MOSFET) gate
• pin2 to nMOS Transistor (MOSFET) gate

VS1838B IR Receiver

• VCC to RGB LED (Wokwi compatible) COM, 16x2 I2C LCD VCC, MT3608 VOUT+
• GND to nMOS Transistor (MOSFET) source, LM2596 OUT, MT3608 VOUT-, Pushbutton Pin 3, TP4056 OUT-, MT3608 VIN-
• OUT to Resistor pin1

16x2 I2C LCD

• SDA to Arduino Nano A4
• SCL to Arduino Nano A5
• VCC to VS1838B IR Receiver VCC, RGB LED (Wokwi compatible) COM, MT3608 VOUT+
• GND to nMOS Transistor (MOSFET) source, LM2596 OUT, MT3608 VOUT-, Pushbutton Pin 3, TP4056 OUT-, MT3608 VIN-

TP4056

• OUT- to nMOS Transistor (MOSFET) source, VS1838B IR Receiver GND, LM2596 OUT, MT3608 VOUT-, Pushbutton Pin 3, MT3608 VIN-
• OUT+ to Rocker Switch (SPST) 1
• B- to Polymer Lithium Ion Battery - Generic GND
• B+ to Polymer Lithium Ion Battery - Generic VCC

DC Mini Metal Gear Motor

• IN2 to nMOS Transistor (MOSFET) drain
• IN1 to LM2596 OUT

Polymer Lithium Ion Battery - Generic

• GND to TP4056 B-
• VCC to TP4056 B+

Solenoid

• pin2 to Diode cathode
• pin1 to Diode anode

Diode

• cathode to Solenoid pin2
• anode to nMOS Transistor (MOSFET) drain, Solenoid pin1

MT3608

• VOUT+ to VS1838B IR Receiver VCC, RGB LED (Wokwi compatible) COM, 16x2 I2C LCD VCC
• VIN+ to Rocker Switch (SPST) 2
• VOUT- to nMOS Transistor (MOSFET) source, VS1838B IR Receiver GND, LM2596 OUT, Pushbutton Pin 3, TP4056 OUT-, MT3608 VIN-
• VIN- to nMOS Transistor (MOSFET) source, VS1838B IR Receiver GND, LM2596 OUT, Pushbutton Pin 3, TP4056 OUT-

Rocker Switch (SPST)

• 1 to TP4056 OUT+
• 2 to MT3608 VIN+

Pushbutton

• Pin 1 to Arduino Nano D8
• Pin 3 to nMOS Transistor (MOSFET) source, VS1838B IR Receiver GND, LM2596 OUT, MT3608 VOUT-, TP4056 OUT-, MT3608 VIN-

LM