NE555 Make LED Flasher Circuit (JLCPCB)

In this circuit, we are going to teach you making a simple electronics project. It is a LED flasher circuit, that you can make at home. To make this circuit, we are using NE-555 timer IC. To decorate your home or office you can use this circuit. This circuit also can be used for turning signal of all kind of autos and vehicle.

Using only a 9v battery, you can easily operate this circuit. You also can use 9v battery. You also can use a DC-9v SMPS power supply circuit.

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.

We thanks to our sponsor JLCPCB https://jlcpcb.com/RTA for sponsoring us PCBs for this project circuit.

Thanks To JLCPCB.

$2 for 1-4 Layer PCBs.

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

To making this SMT led light project circuit, we are using some SMD components. You can order your assembled SMT circuit form JLCPCB.

All components list have been given below –

Component List –

1. Time IC – NE 555 (SOP-8)

2. Resistor – 1 KΩ (102) and 68.1 KΩ (6812)

3. Capacitor – 100uF/25v

4. Capacitor - 1000uF/25v

5. LED – 3v (20mA)

6. Diode – 1N 4007

7. Linear Voltage Regulators – 7805 (TO-252-DPAK)

8. Power Source – 9v

NE555 timer IC is an integrated circuit used in a variety of timer, delay, pulse generation and oscillator applications. Derivatives provide two or four timing circuits in one package. There are totally 8 legs of a timer IC.

As well as the 555 timer, there is also available the NE556 timer oscillator.

The internal block diagram and schematic of the 555 timer are highlighted with the same color across all three drawings to clarify, how the chip is implemented.

Its 8 legs Pin Out can be seen above.

1. GND - The ground pin connects the 555 timer to the negative (0v) supply rail.

2. TRIG - The negative input to comparator No 1. A negative pulse on this pin “sets” the internal Flip-flop when the voltage drops below 1/3Vcc causing the output to switch from a “LOW” to a “HIGH” state.

3. OUT - The output pin can drive any TTL circuit and is capable of sourcing or sinking up to 200mA of current at an output voltage equal to approximately Vcc – 1.5V so small speakers, LEDs or motors can be connected directly to the output.

4. RESET - This pin is used to “reset” the internal Flip-flop controlling the state of the output, pin 3. This is an active-low input and is generally connected to a logic “1” level when not used to prevent any unwanted resetting of the output.

5. CONT - This pin controls the timing of the 555 by overriding the 2/3Vcc level of the voltage divider network. By applying a voltage to this pin the width of the output signal can be varied independently of the RC timing network. When not used it is connected to ground via a 10nF capacitor to eliminate any noise.

6. THRES - The positive input to comparator No 2. This pin is used to reset the Flip-flop when the voltage applied to it exceeds 2/3Vcc causing the output to switch from “HIGH” to “LOW” state. This pin connects directly to the RC timing circuit.

7. DISCH - The discharge pin is connected directly to the Collector of an internal NPN transistor which is used to “discharge” the timing capacitor to ground when the output at pin 3 switches “LOW”.

8. VCC - This is the power supply pin and for general purpose TTL 555

timers is between 4.5V and 15V.

To make this SMT project circuit, we might need some electronics component. JLCPCB has its own parts library. JLCPCB has 200k+ in stock components, 24 hours rapid SMT assembly. You can check SMT parts library here.

• Variety of Timer
• LED blinker
• Position Modulation
• Security alarms
• Tone generations
• Logic clocks
• Lamp and LED flashers
• Oscillator Applications
• Pulse generation
• Delay Timer

The schematics of PCBs can be seen above. Again thanks to JLCPCB, for such a quality PCBs.

To make this circuit, we need to follow a normal method of this time IC. 1st we need to connect 2 and 6 no leg of timer IC-NE555. Then we connect 4 and 8 no leg of NE-555 timer IC. It is a common connection for NE555 IC circuit. Specially, if you want to make a LED light effect project.

Remember, to make led light flasher circuit using NE-555 IC you might need this connection.

Now we connect 100µf/ 25v capacitor with the circuit. We connect capacitor negative leg with 1no leg of timer IC and connect capacitor positive leg with 2no leg of timer IC.

To make this circuit, we are using 68 KΩ resistor. We also can use 1KΩ and 68 KΩ resistor to make this circuit. To make this circuit, we need to make a parallel connection between one terminal of this two resistor.

We connect parallel side with 7no led of timer IC and connect two different terminal with 6 and 8 no leg of timer IC.

For better effect, we are using 12 piece led light circuit. We divide this led into 2 side. Then each side will contain 6 LEDS. Then we make a parallel connection in this 6 LEDS.

Now we make a series connection in this two side LEDS. Now we get 3 side . Connect this series side with 3no leg of timer IC. Connect negative side led with 4 no leg of timer IC and positive side led with 4no leg of timer IC.

For power supply, we are using DC 9v. You can use 9v battery or can use the power supply, that can provide DC 9v. Be careful about the power supply, because if you use more than 9v , then led light will blown away and the circuit may damage also.

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.