LED Flash Module
![Skjermbilde 2024-03-29 210947.png](/proxy/?url=https://content.instructables.com/FX8/E5B0/LUCOC2I1/FX8E5B0LUCOC2I1.png&filename=Skjermbilde 2024-03-29 210947.png)
![Skjermbilde 2024-03-29 211008.png](/proxy/?url=https://content.instructables.com/F40/GESK/LUCOC2IV/F40GESKLUCOC2IV.png&filename=Skjermbilde 2024-03-29 211008.png)
Today, I wanted to create a LED flash circuit using the famous 555 Timer IC.
This circuit is one of many versions of this module i will make.
This circuit is more focused on the bare-bone to make this ic flash on and off repeatedly.
So with that beeing said, Lets make some LEDs flash !
Supplies
For this exact PCB design, I used the SMD/THT components listed bellow.
- 1x NE555 | LINK HERE
- 2x 10kΩ | LINK HERE
- 1x 270kΩ | LINK HERE
- 1x LED | LINK HERE
- 1x 3-PIN header | LINK HERE
- 1x 47uF | LINK HERE
Here is a non-specified list for general components:
- 1x NE555- Timer IC
- 2x 10kΩ Resistors
- 1x 270kΩ Resistor
- 1x LED (Optional)
- 1x Capacitor (Any Value)
The Circuit
![Skjermbilde 2024-03-29 211035.png](/proxy/?url=https://content.instructables.com/FL6/BM2E/LUCOC2K8/FL6BM2ELUCOC2K8.png&filename=Skjermbilde 2024-03-29 211035.png)
As you see in the image above, the circuit is pretty straight forward and isn't so complicated.
You can choose the input voltage value yourself, but be carefull and double-check the voltage-rating on each induvidual component to avoid frying the components. (and, also check the ampere rating.)
NOTE: The value of the capacitor is what decides the time the output is pulled low (0v) or is pulled high (inputvoltage). The 47uF capacitor used in the circuit should give a 1 second on period followed by 1 second off period. This is going to continue over and over agian, forever.
Lets Make a PCB!
![Skjermbilde 2024-03-29 211222.png](/proxy/?url=https://content.instructables.com/FGV/SBVA/LUCOC2L7/FGVSBVALUCOC2L7.png&filename=Skjermbilde 2024-03-29 211222.png)
![Bilde_2024-03-29_211442612.png](/proxy/?url=https://content.instructables.com/FR5/Y49B/LUCOC2E7/FR5Y49BLUCOC2E7.png&filename=Bilde_2024-03-29_211442612.png)
![Skjermbilde 2024-03-29 210927.png](/proxy/?url=https://content.instructables.com/FN5/V28A/LUCOC2HW/FN5V28ALUCOC2HW.png&filename=Skjermbilde 2024-03-29 210927.png)
![Skjermbilde 2024-03-29 211000.png](/proxy/?url=https://content.instructables.com/FOR/30U5/LUCOC2IN/FOR30U5LUCOC2IN.png&filename=Skjermbilde 2024-03-29 211000.png)
I created the circuit in a Free PCB designer called EasyEDA.
Firstly I created a schematic and used the inbuilt search engine for components and found the right components for this project.
Then I converted the schematic into a pcb using the 'Create PCB' button.
I arranged the components into the posistion i wanted them to be in and added traces between each component.
Then I added a solid GND ( Ground / - ) Layer, and some text to spice it up a bit.
Then i pressed 3d view, to view this master piece.
( In the PCB I forgot to connect the VCC pin of the header to the VCC pin of the 555-timer IC. DON'T DO THE SAME! )