Turn your lights into music movers.
This electronic project lets you control lights with music.
It plugs into a regular electrical outlet and uses clever components to make your lights dance to the beat.
These components might include a microphone to pick up the sound, a booster to make the signal strong enough and a special switch that tells the lights how to respond.
Circuit Working:
Parts List:
| Component | Value/Type | Quantity |
|---|---|---|
| Resistors | ||
| R1 | 560k, 1W | 1 |
| R2, R3 | 15k | 2 |
| R4 | 33k | 1 |
| R5, R9, R6 | 1k | 3 |
| R7 | 18k | 1 |
| R8 | 560Ω | 1 |
| R10, R11, R12 | 100Ω | 3 |
| Potentiometers | 5k | 3 |
| Capacitors | ||
| C1, C8, C10, C12 | 0.047µF, 630V Ceramic | 4 |
| C2 | 0.33µF, 400V Ceramic | 1 |
| C5 | 0.1µF Ceramic | 1 |
| C3 | 1000µF, 16V Electrolytic | 1 |
| C4 | 100µF, 16V Electrolytic | 1 |
| C6 | 25µF, 6V Electrolytic | 1 |
| C7 | 1µF, 16V Electrolytic | 1 |
| C9 | 22µF, 16V Electrolytic | 1 |
| C11 | 47µF, 16V Electrolytic | 1 |
| Semiconductors | ||
| T1, T2 | BC547 Transistor | 2 |
| T3, T4, T5 | BT136 Triac (Note in diagram T3 to T5 is wrongly written C106 its BT136) | 3 |
| D1, D2 | 1N4004 Diode | 2 |
| D3 | 12V, 1W Zener Diode | 1 |
| Other Components | ||
| Electret MIC | 1 | |
| Switch SA, SB | DPDT Switch | 1 |
| Fuse F1, F2 | 100mA Fuse | 2 |
| L1 | 40µH, 6A Coil | 1 |
| B1, B2, B3 | 220V Bulb | 3 |
This design outlines a circuit for sound-controlled lights enabling synchronization between the brightness of attached lights and captured sound via a microphone.
Widely employed in discotheques, bars and parties, this electronic setup offers dynamic lighting effects.
Traditionally, sound controlled lights are linked directly to loudspeakers posing risks such as potential damage to lights from powerful amplifiers or vice versa.
However, this circuit mitigates such hazards by utilizing a microphone to intercept sound rather than directly connecting to the amplifier.
The circuit comprises a power supply section adjacent to the electret microphone amplifier and a light control section.
Capacitors C2 and C3 function as a capacitive voltage divider reducing the power supply level.
Diodes D1 and D2 rectify the positive swing of the AC voltage while the network involving L1 and C1 safeguards against voltage surges.
It’s crucial to note the use of a specific type of electret microphone with two pins rather than three.
Additionally, when constructing the circuit, it is imperative to handle high voltages and currents ensuring all components possess adequate ratings.
Potentiometers P1, P2 and P3 should feature plastic shafts and knobs and a shielded cable must connect the microphone to the circuit.
All wiring leading to the primary power source and lights necessitates isolation with shrink tubing and the circuit enclosure should be plastic with no metallic protrusions.
Even the triac heatsinks are electrified, warranting caution due to the lack of isolation between the circuit and main power lines.
Each triacs maximum power output should not exceed 400W to prevent overloading.
Formula:
The process of turning audio impulses into control signals that can change the lights brightness or on/off status in response to changes in the amplitude or rhythm of the music is necessary to create a 220V light that is controlled by music.
Usually, the instantaneous power of the audio signal is integrated over time by the envelope detector, sometimes called the level detector.
The AC signals power P(t) may be found using the formula:
P(t) = V(t)2 / R
where:
- V(t) is the instantaneous voltage of the audio signal
- R is the resistance in the detection circuit.
To smooth out the voltage changes and transform this AC power into a DC control signal, employ a capacitor C.
The capacitor resistor networks time constant, τ = RC controls how fast the detector reacts to variations in the audio stream.
This formula and method serve as a foundation for creating a 220V light circuit that is controlled by music.
Depending on the particular needs and intended performance characteristics, adjustments can be required.
How to Build:
To build a Simple Music Controlled 220V Light Circuit, follow these steps:
Gather Components:
- Collect all necessary components including resistors, capacitors, diodes, an electret microphone, potentiometers, triacs, a power supply and appropriate wiring.
Prepare Power Supply Section:
- Connect the electret microphone amplifier, capacitors C2 and C3, diodes D1 and D2 and the protective network L1 and C1 as per the circuit diagram.
- Ensure proper isolation and use components with suitable ratings for handling voltages and currents.
Assemble Light Control Section:
- Connect the triacs and potentiometers P1, P2, and P3 as indicated in the circuit diagram.
- Make sure potentiometers have plastic shafts and knobs to prevent electrical hazards.
Integrate Microphone:
- Use shielded cable to connect the electret microphone to the circuit.
- Ensure secure connections and proper grounding.
Wire Power Supply and Lights:
- Isolate all wiring to the main power supply and lights using shrink tubing.
- Avoid metallic protrusions from the circuit enclosure to prevent electrical hazards.
Test and Troubleshoot:
- Power up the circuit and test functionality.
- Adjust potentiometers to control light brightness in sync with captured sound.
- Check for any issues and troubleshoot as necessary.
Finalize Circuit Enclosure:
- Place the circuit components in a plastic enclosure to ensure safety.
- Secure all components and ensure there are no exposed metallic parts.
Ensure Safety Precautions:
- Be cautious of electrified heatsinks on the triacs.
- Double check for proper isolation between the circuit and main power lines.
- Ensure each triacs power output does not exceed 400W to prevent overloading.
Test Again:
- Perform another round of testing to ensure the circuit operates safely and effectively.
Mount and Install:
- Mount the circuit in its intended location ensuring it is securely installed and isolated from any potential hazards.
Note:
- Remember to adhere to safety guidelines throughout the building process and consult the circuit diagram for accurate connections.
- If in doubt, seek assistance from an experienced electrician or technician.
Conclusion:
In conclusion, a music controlled 220V light circuit is a versatile electronic system that synchronizes lighting effects with sound inputs commonly found in entertainment venues and stage performances.
It enhances the ambiance by dynamically adjusting light intensity and color according to the detected music.
However, working with such circuits demands strict adherence to safety measures due to the involvement of high voltage components.