Circuit Documentation

Summary

This circuit is designed to control an AC light and a single-phase induction motor using an ATMEGA328 microcontroller. It includes various sensors and modules such as a DHT11 humidity and temperature sensor, an HC-05 Bluetooth module, an HW-040 rotary encoder, and an SW-420 vibration sensor. The circuit also features an LCD display for user interaction and feedback.

Component List

1. ATMEGA328

   • Description: Microcontroller
   • Pins: RESET, D0, D1, D2, D3, D4, VCC, GND, CRYSTAL, D5, D6, D7, D8, D9, D10, D11, D12, D13, AREF, A0, A1, A2, A3, A4, A5

2. HC-05 Bluetooth Module

   • Description: Bluetooth communication module
   • Pins: Key, VCC, TXD, RXD, State, GND

3. HW-040 Rotary Encoder

   • Description: Rotary encoder for user input
   • Pins: GND, +, SW, DT, CLK

4. SW-420 Vibration Sensor

   • Description: Vibration sensor
   • Pins: vcc, Ground, Digital output

5. DHT11 Humidity and Temperature Sensor

   • Description: Humidity and temperature sensor
   • Pins: VDD, DATA, NULL, GND

6. 230V to 12V Step Down Transformer

   • Description: Transformer to step down voltage
   • Pins: phase

7. Bridge Rectifier

   • Description: Converts AC to DC
   • Pins: AC input +, AC input -, +, -

8. 1N4007 Rectifier Diode

   • Description: Rectifier diode
   • Pins: Cathode, Anode

9. Electrolytic Capacitor

   • Description: Capacitor
   • Pins: -, +
   • Properties: Capacitance: 0.00047 Farads

10. 7805

    • Description: Voltage regulator
    • Pins: Vin, Gnd, Vout

11. LED: Two Pin (red)

    • Description: LED
    • Pins: cathode, anode

12. Resistor

    • Description: Resistor
    • Pins: pin1, pin2
    • Properties: Resistance: 330 Ohms

13. GND

    • Description: Ground connection
    • Pins: GND

14. Ceramic Capacitor

    • Description: Capacitor
    • Pins: pin0, pin1
    • Properties: Capacitance: 0.0000001 Farads

15. Vcc

    • Description: Power supply connection
    • Pins: Vcc

16. LM358 Op-Amp

    • Description: Operational amplifier
    • Pins: 8, 1, 2, 3, 4, 5, 6, 7

17. 1N4148 Diode

    • Description: General-purpose diode
    • Pins: Cathode, Anode

18. Adafruit Standard LCD 16x2

    • Description: LCD display
    • Pins: VSS, VDD, V0, RS, R/W, E, DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7, LED+, LED-

19. Optoisolator MOC3021

    • Description: Optoisolator
    • Pins: ANODE, CATHODE, N/C, MAIN TERM, NC

20. Single Phase Induction Motor

    • Description: Motor
    • Pins: 1, neutral, 3

21. BT136 600

    • Description: Triac
    • Pins: MT1, MT2, GATE

22. 240V Power Source

    • Description: Power source
    • Pins: Live, Neutral

23. Fuse

    • Description: Fuse
    • Pins: Terminal 1, Terminal 2

24. Crystal 16MHz

    • Description: Crystal oscillator
    • Pins: pin 0, pin 1

25. 2Pin Push Switch

    • Description: Push switch
    • Pins: Input +, Output +

Wiring Details

ATMEGA328

• RESET: Connected to GND via a 2Pin Push Switch and an Electrolytic Capacitor.
• D2: Connected to pin 7 of LM358 Op-Amp.
• D3: Connected to DATA pin of DHT11 Humidity and Temperature Sensor.
• D4: Connected to Digital output pin of SW-420 Vibration Sensor.
• CRYSTAL: Connected to pin 0 and pin 1 of Crystal 16MHz and Ceramic Capacitors.
• D5: Connected to CLK pin of HW-040 Rotary Encoder.
• D6: Connected to DT pin of HW-040 Rotary Encoder.
• D7: Connected to RXD pin of HC-05 Bluetooth Module.
• D8: Connected to State pin of HC-05 Bluetooth Module.
• D9: Connected to CATHODE pin of optoisolator MOC3021.
• D10: Connected to CATHODE pin of another optoisolator MOC3021.
• D11: Connected to TXD pin of HC-05 Bluetooth Module.
• D12: Connected to pin1 of a Resistor and RS pin of Adafruit Standard LCD 16x2.
• A0: Connected to pin1 of a Resistor and E pin of Adafruit Standard LCD 16x2.
• A2: Connected to DB4 pin of Adafruit Standard LCD 16x2.
• A3: Connected to DB5 pin of Adafruit Standard LCD 16x2.
• A4: Connected to DB6 pin of Adafruit Standard LCD 16x2.
• A5: Connected to DB7 pin of Adafruit Standard LCD 16x2.

HC-05 Bluetooth Module

• VCC: Connected to Vcc.
• GND: Connected to GND.
• TXD: Connected to D11 of ATMEGA328.
• RXD: Connected to D7 of ATMEGA328.
• State: Connected to D8 of ATMEGA328.

HW-040 Rotary Encoder

• GND: Connected to GND.
• +: Connected to Vcc.
• CLK: Connected to D5 of ATMEGA328.
• DT: Connected to D6 of ATMEGA328.

SW-420 Vibration Sensor

• vcc: Connected to Vcc.
• Ground: Connected to GND.
• Digital output: Connected to D4 of ATMEGA328.

DHT11 Humidity and Temperature Sensor

• VDD: Connected to Vcc.
• DATA: Connected to D3 of ATMEGA328.
• GND: Connected to GND.

230V to 12V Step Down Transformer

• phase: Connected to Neutral of 240V Power Source and neutral of Single Phase Induction Motor.

Bridge Rectifier

• AC input +: Connected to Anode of 1N4007 Rectifier Diode and phase of 230V to 12V Step Down Transformer.
• AC input -: Connected to phase of 230V to 12V Step Down Transformer.
• +: Connected to AC input + and pin1 of a Resistor.
• -: Connected to pin0 of Ceramic Capacitor, cathode of LED, and - of Electrolytic Capacitor.

1N4007 Rectifier Diode

• Anode: Connected to AC input + of Bridge Rectifier and phase of 230V to 12V Step Down Transformer.
• Cathode: Connected to + of Electrolytic Capacitor and Vin of 7805.

Electrolytic Capacitor

• -: Connected to pin0 of Ceramic Capacitor, cathode of LED, and - of Bridge Rectifier.
• +: Connected to Anode of 1N4007 Rectifier Diode and Vin of 7805.

7805

• Vin: Connected to + of Electrolytic Capacitor.
• Gnd: Connected to GND.
• Vout: Connected to pin1 of a Resistor.

LED: Two Pin (red)

• cathode: Connected to pin0 of Ceramic Capacitor and - of Bridge Rectifier.
• anode: Connected to pin2 of a Resistor.

Resistor

• pin1: Connected to various components such as ATMEGA328, Bridge Rectifier, and 7805.
• pin2: Connected to various components such as LED, Vcc, and optoisolator MOC3021.

GND

• GND: Connected to various components such as ATMEGA328, HC-05 Bluetooth Module