555-LED-Chaser
About the 555-LED-Chaser PCB
555-LED-Chaser is an open source PCB design by pranay-k4, published on GitHub under the MIT license. It is a 2-layer board measuring 97.7 × 42.7 mm, with 17 components from 10 distinct parts.
Other key parts include the NE555P and 4017. By type, the board carries 8 diodes, 2 ICs, 2 capacitors, 2 resistors, 1 connector and 1 switch.
From the project
A 555 LED chaser board — a classic beginner PCB project. A custom-designed 555 Timer LED Chaser PCB built using KiCad.
A custom-designed 555 Timer LED Chaser PCB built using KiCad. The board uses a 555 timer to generate clock pulses and a counter IC to create a sequential LED chasing effect.
- Adjustable chase speed using potentiometer - Two operating modes: - Sequential LED chaser - All LEDs ON - Custom PCB designed in KiCad - Beginner-friendly electronics project - Through-hole components for easy assembly
Main components on the 555-LED-Chaser
555-LED-Chaser bill of materials (BOM)
17 components, 10 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | NE555P | DIP-8_W7.62mm | U1 |
| 1 | 4017 | DIP-16_W7.62mm | U2 |
| 1 | Conn_01x02_Socket | PinHeader_1x02_P2.54mm_Horizontal | J1 |
| 1 | 50k | Potentiometer_Bourns_3386P_Vertical | RV1 |
| 1 | SW_SPDT | SW_Slide_SPDT_Straight_CK_OS102011MS2Q | SW1 |
| 8 | LED | LED_D5.0mm | D1, D2, D3, D4, D5, D6, D7, D8 |
| 1 | C_Polarized | CP_Radial_D5.0mm_P2.50mm | C1 |
| 1 | C | C_Disc_D5.0mm_W2.5mm_P2.50mm | C2 |
| 1 | 470 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
555-LED-Chaser design files
The KiCad project lives in the pranay-k4/555-LED-Chaser repository on GitHub; these links point at the commit this page was built from.
555-LED-Chaser: common questions
How big is the 555-LED-Chaser PCB?
The 555-LED-Chaser measures 97.7 × 42.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 555-LED-Chaser?
17 components, from 10 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-LED-Chaser design files?
From the pranay-k4/555-LED-Chaser 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-LED-Chaser design in my own project?
Yes, under the terms of its MIT license, which pranay-k4 chose for the repository.