2 layers327.9 × 139 mm
Coco2
baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.
147 parts446
2 layers
Led chaser
pavanchandr/Rain_chaserSequential logic PCB using 555 timer and CD4017
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 29
- Pads
- 81
- Tracks, vias
- 176, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 31 Mar 2026
- Updated
- 7 Apr 2026
Overview
Led chaser is an open-source printed circuit board by pavanchandr, from the pavanchandr/Rain_chaser repository on GitHub. It is a 2-layer board with 29 parts on 29 nets, routed with 176 tracks and 0 vias.
It is built around the NE555P. Its parts include 12 resistors, 10 diodes, 2 capacitors, 2 ICs and 1 connector.
Main components
1README
README.mdLed_chaser
Sequential logic PCB using 555 timer and CD4017
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 200R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 |
| 10 | LED | LED_THT:LED_D5.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 2 | 100nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C3 |
| 1 | 0R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R12 |
| 1 | 10K | Potentiometer_THT:Potentiometer_Alps_RK09K_Single_Vertical | RV1 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | E_cap1 |
| 1 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R11 |
| 1 | 4017 | Package_DIP:CERDIP-16_W7.62mm_SideBrazed | U2 |
| 1 | Conn_01x02_Pin | Connector_AMASS:AMASS_XT30U-F_1x02_P5.0mm_Vertical | J1 |
| 1 | NE555P | Package_DIP:DIP-8_W7.62mm | U1 |
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Questions
What parts does the Led chaser use?
29 parts, built around the NE555P. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Led chaser KiCad files?
From the pavanchandr/Rain_chaser repository on GitHub, at the commit this page was made from: the board is hardware/kicad/Led_chaser.kicad_pcb and its schematic hardware/kicad/Led_chaser.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Led chaser design in my own project?
Its repository states no licence, so its author keeps all rights: ask pavanchandr before reusing the design.