2 layers52.1 × 37.5 mm
4 layers99.2 × 94.3 mm
555-Chaser LED
code-ga/555-Chaser-LEDThis is the five effect led board for you for your bed room. This build up by just using ic so just download schematic and build one right now
- Size
- 99.2 × 94.3 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 74
- Nets
- 80
- Pads
- 237
- Tracks, vias
- 632, 34
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 18 Jun 2026
- Updated
- 27 Aug 2026
Overview
555-Chaser LED is an open-source printed circuit board by code-ga, from the code-ga/555-Chaser-LED repository on GitHub. It is a 4-layer board of 99.2 × 94.3 mm with 74 parts on 80 nets, routed with 632 tracks and 34 vias.
It is built around the 74HC595, CD74HC93E and NE555P. Its parts include 36 diodes, 19 resistors, 6 ICs, 5 transistors and 3 capacitors.
Main components
3
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift Registers
CD74HC93E
PDIP-14-55℃~+125℃ 1 2V~6V 35MHz 4 74HC Asynchronous Divide-by-2 Falling Edge Programmable divide ratio、Reset function、Multi-mode counting Up Counter PDIP-14 Counters, Dividers ROHSTexas InstrumentsCounters, Dividers
NE555P
DIP-80℃~+70℃ 100kHz 10mA 4.5V~16V DIP-8 555 Timers / Counters ROHSTexas InstrumentsTimers / Counters
README
readme.md555 Chaser LED
Overview
This is the one led board with 5 effects. These effects are:
- Blinky effect (each led will light-up then off for next led)
- Bit Counting (That is the calculator with led)
- Bar led ( These Stack up each clock )
- Breath effect ( fade up and fade down )
- On Mode ( their light up all led their have )
Why
Because i want to try out design some hardware project. also some toy inspiration by stardance. this will allow me to learn about ic and also try to make the one board to the real life
Image
This is the result board
Also for someone want to know how that work
BOM (Bill of material)
Also with the BOM (bill of material) of project is
For sure that i want to notice that i don't mention about in this is pcb cost because that difference between provider but for me i will use jlcpcb because their near me
uh i so lazy so you can try to fill out BOM by reference here here (v2)
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 26 | D | Diode_SMD:D_SOD-323 | D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26 +10 |
| 12 | 470 | Resistor_SMD:R_0805_2012Metric | R2, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 |
| 10 | LED | LED_THT:LED_D3.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 5 | 1k | Resistor_SMD:R_1206_3216Metric | R1, R3, R4, R16, R17 |
| 5 | NPN | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5 |
| 2 | 4017 | CD4017BE:N16 | U2, U6 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R18, R19 |
| 2 | 74HC595 | 74HC595N:DIP16-2.54-20.32X5.84MM | U3, U5 |
| 1 | 0.01uF | Capacitor_THT:C_Disc_D7.5mm_W2.5mm_P5.00mm | C1 |
| 1 | 10µF | Capacitor_SMD:C_1206_3216Metric | C3 |
| 1 | 33uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C2 |
| 1 | 50k | Potentiometer_THT:Potentiometer_Vishay_T93YA_Vertical | RV1 |
| 1 | CD74HC93E | 74HC93:N14 | U7 |
| 1 | Conn_01x01_Socket | Connector_PinSocket_2.54mm:PinSocket_1x01_P2.54mm_Vertical | J2 |
| 1 | NE555P | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H9.5mm | SW2 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4135-GF-A_6P_TopMnt_Horizontal | J4 |
| 1 | ~ | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J1 |
Questions
How big is the 555-Chaser LED PCB?
It measures 99.2 × 94.3 mm and has 4 copper layers, 1.6 mm thick.
What parts does the 555-Chaser LED use?
74 parts, built around the 74HC595, CD74HC93E and 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 555-Chaser LED KiCad files?
From the code-ga/555-Chaser-LED repository on GitHub, at the commit this page was made from: the board is 555-Chaser-LED.kicad_pcb and its schematic 555-Chaser-LED.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 555-Chaser LED design in my own project?
Its repository states no licence, so its author keeps all rights: ask code-ga before reusing the design.
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