Sound Activated Filament Light - New Tech

The project is about making music activated light circuit. We will make that circuit, the circuit can sync with music. The lights react to sound and will flash along with the beat of music. Wrap around anything like branches, trees, or vases or bend into any shape you like for that customised look and instant magical touch.

The sound-activated lamp was developed based on the DragonBoard™ 410c, and is turned on when the sound-activated module detects sounds. After a period of time, the lamp will be turned off automatically. This is convenient and energy saving

The circuit is also able to react to the listener and the environment in real-time.

The final circuit diagram and design can be seen above. We also thanks to our sponsor JLCPCB https://jlcpcb.com/RTA for sponsoring us PCB for this project.

The article is being published in collaboration with JLCPCB. They supply high quality PCBs at a very reasonable price. They also can provide SMT circuit assembly.

The final circuit diagram and design can be seen above. We also thank to our sponsor JLCPCB https://jlcpcb.com/RTA for sponsoring us PCB for this project.

Thanks to JLCPCB.

$2 for 1-4 layer PCBs.

Get SMT Coupons - https://jlcpcb.com/RTA

To make a mini music light, the circuit can be enclosed in a small plastic or metal casing with a switch to turn it on and off. A small keychain or lanyard can also be attached to the casing to make it easy to carry around.

Additional components, such as capacitors, resistors, filament bulb or transistors, can be added to the circuit to control the brightness or flashing pattern of the filament bulb.

All component lists have to been given below.

Component list -

1. PCB by JLCPCB

2. Transistor - BC 557, BC 547

3. Triac - BT - 136

5. Resistor - 1 KΩ, 68KΩ, 100 KΩ  and 220 Ω

6. MIC

7. AC Bulb

8. DC - 9v

9. Bulb Holder

1.      Used in LED matrix, LED chaser and other LED projects

2.      Binary counter or Binary decoder

3.      Can be used for divide by N counting

4.      Remote metering, automotive, medical electronics

BT136 is a triac, which is a type of electronic switch that is commonly used in AC power control applications.

Here are some of the features of the BT136 triac -

1.      Maximum voltage rating of 600 volts.

2.      Maximum current rating of the bt136 is 4 amperes.

3.      Gate current of 30 milliamperes or less.

4.      Temperature range of -40°c to +125°c.

5.      The bt136 is available in a to-220ab package

6.      Making it suitable for ac power control applications.

7.      It has a built-in voltage protection circuit

The BC-557 is a general purpose PNP transistor commonly used in low power amplification.

1.      Maximum collector current rating 150mA

2.      Maximum collector-emitter voltage rating 50v

3.      Suitable for use in audio amplification

4.      High DC current gain

5.      Low voltage drop, typically around 0.7v

C557 is also available in TO-92, SOT-23 and SOT-323 package

The BC547 is widely used general-purpose NPN bipolar junction transistor.

1.      Suitable for use in low-noise amplification circuit

2.      DC current gain ranging from 110 to 800

3.      Low voltage drop, typically around 0.7v

4.      Maximum collector current rating of 100mA

5.      Maximum collector-emitter voltage rating of 45V

6.      BC547 is also available in TO-92, SOT-23 and SOT-223 package.

The BT136 is a triac, which is a three-terminal electronic component used for controlling AC power. Here is the pinout of the BT136 triac.

1.      T1

2.      T2

3.      Gate

BC-557

The pin arrangement may vary depending on the manufacturer or package type, but the pin functions remain the same.

1. Collector
2. Base
3. Emitter

BC -547

The pin arrangement may vary depending on the manufacturer or package type, but the pin functions remain the same.

1. Collector
2. Base
3. Emitter

The schematic of music light circuit along with the PCB layout can be seen above.

To make this music reactive circuit, we connect BC547 transistor collector leg with Base leg of BC557 transistor. Then we connect BC547 transistor base leg with positive leg of Mic and connect BC547 transistor emitter leg with negative leg of Mic.

Now we need to connect 68 KΩ resistor with emitter leg of BC557 transistor and connect 1 KΩ resistor with base leg and emitter leg of BC557 transistor. Then connect 100 KΩ resistor with emitter leg of BC547 transistor and collector leg of BC557.

This time we need to connect BC557 transistor collector leg with 14 leg of CD-4017 IC and connect 4no and 15no leg of CD-4017 IC.

It is time to connect CD-4017 IC 13no leg with emitter leg of BC547 transistor. We also need to connect 13no and 8no leg of CD-4017 IC.

Our circuit is now completely ready for use. Now need to connect a Triac with the circuit. Connect triac “T1” terminal with 8no leg of CD-4017 IC.

Now we need to connect a 220 Ω resistor with the circuit. We connect this resistor with 2no leg of CD-4017 IC and connect its other terminal with “G” terminal of triac. Since it is an AC bulb music active circuit, for that we need to connect an AC bulb with the circuit.

Connect AC bulb one terminal with “T2” terminal of triac and AC bulb other terminal with 220 volt AC line.

Then connect AC voltage other terminal with 8no leg of CD-4017 IC. Now need to connect DC-9v power supply with the circuit. We connect DC-9v positive cable with “Emitter” leg of BC557 transistor and DC-9v negative cable with 13no leg CD-417 IC.

Now just, plug-in power and put Mic beside the sound system and connect AC bulb with the holder. Enjoy the effect of music reactive light circuit.

Again thanks to JLCPCB for best quality PCBs.

Neat and perfect soldering is an important part for all kind of PCBs. Since soldering, you should remember that, there should not be any kind of short circuit connection. After soldering all leg, we cut-off the extra leg of all electronics component.

We also can use liquid PCB cleaner to clean the PCB board.

Our circuit is completely ready for use now. We need to power switch ON and put audio source beside MIC. Then play music and enjoy the awesome effect of filament bulb.

Again thanks to JLCPCB for best quality PCBs.

If you complete design of your PCBs, then it is time to order PCBs. To order best quality PCBs, just visit JLCPCB and click on the “QUOTE NOW” button.

Since 2006, JLCPCB continuously driven to become more efficient and to reduce costs. They promise to offer customers the most economic PCBs forever. JLCPCB makes cheapest but top quality PCBs possibly because of scale effect, extremely high production efficiency and less manpower cost.

You can order minimum 5 pieces PCBs for only $2 costs.

To order PCBs, make your Gerber file. Then drag and drop the Gerber file on the following box.

Click on “Gerber Viewer” button you can check the PCBs design. Make sure everything is good, then choose color, quantity and order your PCBs at very reasonable prices.

If you are a new user, then you can order 10 pieces PCBs, costing only $2. To place your order click on “Save to Cart”  button. Confirm your shipping address and shipping method.

To order your SMT PCBs, visit JLCPCB.

1.     Drag and drop SMT PCBs file on site.

2.     Choose your PCBs color and quantity.

3.     To free SMT assembly for your PCB click on “SMT Assembly” button and then confirm.

4.     Add your BOM file and CPL file.

5.     Place your order click on “Save to Cart” button.

6.     Confirm your shipping address and shipping method.

7.     Pay your payment

8.     Wait for confirmation mail.

9.     For SMT Service, Click here.

JLCPCB supported all shipping method can be seen below.

Estimated Delivery Time -

• DHL International Express 3-5 business days
• UPS Worldwide Saver 3-6 business days
• S.F Express (Standard) 5-8 business days
• S.F Express (Economy) 8-15 business days
• Singapore EMS 8-15 business days
• Post Link Registered Mail 15-20 business days
• ePacket 15-25 business days
• Registered Air Mail 15-20 business days

JLCPCB supported Payment method.

• PayPal
• Credit/Debit Care
• Prepaid wire transfer

To confirm your order, pay your payment. Then accept PayPal, Credit/Debit Card, and Prepaid Wire Transfer. To manufacture your PCBs, it’ll take about 2 days. DHL will be fastest shipping method to arrive your ordered PCBs at your location.

All PCBs were well packed and quality was really good.

Thanks to JLCPCB for best quality PCBs.