555-Timer-Led-Blinker
About the 555-Timer-Led-Blinker PCB
555-Timer-Led-Blinker is an open source PCB design by Md-Zaid-Adeeb, published on GitHub. It is a 2-layer board measuring 35.5 × 33 mm, with 8 components from 5 distinct parts.
Other key parts include the NE555D. By type, the board carries 3 resistors, 2 capacitors, 1 IC, 1 connector and 1 diode.
From the project
A simple, complete PCB design built in KiCad 10 demonstrating a 555 Timer IC configured in astable multivibrator mode to blink an LED at a fixed frequency.
A simple, complete PCB design built in KiCad 10 demonstrating a 555 Timer IC configured in astable multivibrator mode to blink an LED at a fixed frequency.
This project uses the classic NE555 timer IC in astable mode to generate a continuous square wave output, which drives an LED to blink at approximately 1 Hz. It was built end-to-end in KiCad — from schematic capture to a manufacturing-ready PCB — as a demonstration of the full PCB design workflow.
Main components on the 555-Timer-Led-Blinker
555-Timer-Led-Blinker bill of materials (BOM)
8 components, 5 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | NE555D | DIP-8_W7.62mm | U1 |
| 1 | 2-PIN Conn_01x02 | PinHeader_1x02_P2.54mm_Horizontal | J1 |
| 1 | 5MM LED | LED_D5.0mm | D1 |
| 2 | C | C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2 |
| 3 | R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3 |
555-Timer-Led-Blinker design files
The KiCad project lives in the Md-Zaid-Adeeb/555-Timer-Led-Blinker repository on GitHub; these links point at the commit this page was built from.
- Layout555_LED_BLINKER.kicad_pcb
- Schematic555_LED_BLINKER.kicad_sch
- BOMREADME.md
555-Timer-Led-Blinker: common questions
How big is the 555-Timer-Led-Blinker PCB?
The 555-Timer-Led-Blinker measures 35.5 × 33 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 555-Timer-Led-Blinker?
8 components, from 5 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the 555-Timer-Led-Blinker design files?
From the Md-Zaid-Adeeb/555-Timer-Led-Blinker repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the 555-Timer-Led-Blinker design in my own project?
The repository has no license, so all rights stay with Md-Zaid-Adeeb. Use it as a reference, and ask the author before reusing the design.