Circuit Documentation
Summary
The circuit in question is designed to control various devices, including relays, a Bluetooth module, bulbs, a loudspeaker, and an electric lock, using an Arduino UNO as the central microcontroller. The relays are used to switch high-voltage devices such as AC bulbs and a loudspeaker. The Bluetooth HC-06 module enables wireless communication with the Arduino, allowing for remote control of the connected devices. The circuit is powered by a 220V power source, with the Arduino and relays operating at 5V.
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.
Bluetooth HC-06
- Wireless communication module
- Used for Bluetooth serial communication
1-Channel Relay (5V 10A)
- Four instances of a single-channel relay module
- Used for controlling high power/high voltage devices like bulbs and loudspeakers
Power 220V
- The main power source for the circuit
- Provides 220V AC power
AC Bulb
- A high-voltage light bulb
- Controlled via a relay
BULB
- Two instances of a generic bulb
- Controlled via relays
Loudspeaker
- An audio output device
- Controlled via a relay
Electric Lock
- An electromechanical lock
- Controlled via the Arduino
Wiring Details
Arduino UNO
- 5V: Connected to the power pins of all four relays and the VCC pin of the Bluetooth HC-06
- GND: Common ground for the circuit, connected to the ground pins of all four relays and the GND pin of the Bluetooth HC-06
- D0: Connected to the TXD pin of the Bluetooth HC-06
- D1: Connected to the RXD pin of the Bluetooth HC-06
- D2-D5: Control pins for the signal lines of the four relays
Bluetooth HC-06
- VCC: Connected to the 5V output from the Arduino UNO
- GND: Connected to the common ground
- TXD: Connected to the D0 pin on the Arduino UNO
- RXD: Connected to the D1 pin on the Arduino UNO
1-Channel Relay (5V 10A)
- Power: Connected to the 5V output from the Arduino UNO
- Ground: Connected to the common ground
- Signal: Controlled by the D2-D5 pins on the Arduino UNO
- C (Common): Connected to the hot wire of the 220V power source
- NO (Normally Open): Connected to the respective devices (AC Bulb, Loudspeaker, and two generic bulbs)
Power 220V
- Hot wire: Connected to the common terminals (C) of all four relays
- Neutral wire: Connected to the neutral terminals of the AC Bulb and both generic bulbs
AC Bulb
- P: Connected to the NO terminal of one of the relays and the neutral wire of the 220V power source
BULB
- +: Connected to the NO terminal of their respective relays
- -: Connected to the neutral wire of the 220V power source
Loudspeaker
- Pin1: Connected to the NO terminal of one of the relays and the neutral wire of the 220V power source
- Pin2: Connected to the NO terminal of another relay
Electric Lock
- VCC: Not specified in the wiring details
- GND: Not specified in the wiring details
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 (documentation.txt)
No additional code documentation was provided.