2 layers327.9 × 139 mm
Coco2
baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.
147 parts446
2 layers39.6 × 41.4 mm
Spider
Sudo-Aju/SpiderBlink1A blinky board but is shape of a spiderweb
- Size
- 39.6 × 41.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 19
- Pads
- 58
- Tracks, vias
- 227, 21
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 20 Mar 2026
- Updated
- 1 Jul 2026
Overview
Spider is an open-source printed circuit board by Sudo-Aju, from the Sudo-Aju/SpiderBlink repository on GitHub. It is a 2-layer board of 39.6 × 41.4 mm with 20 parts on 19 nets, routed with 227 tracks and 21 vias.
It is built around the NE555P. Its parts include 10 diodes, 2 capacitors, 2 resistors and 2 ICs.
Main components
1README
README.mdA Tiny LED Blinker in Shape of a Spiderweb
Blinks every time it gets the tingle.
Overview
SpiderBlink is a 555 LED chaser board that blinks 10 LEDs in a variable speed sequence using a NE555P timer IC and a CD4017 decade counter. I built this as a beginner PCB project to learn schematic design, PCB routing, and hands-on soldering.
Gallery
Zine
Motivation
I wanted to dvelve deeper into embedded electronics, so thought this might be the chance for me to understand more about ICs, Timers and Oscillators
Bill of Materials
| Reference | Description | Manufacturer | MPN | Quantity | Supplier | Unit Price (USD) | Extended Price (USD) | Product Link |
|---|---|---|---|---|---|---|---|---|
| C1 | 0.01 µF Ceramic Capacitor | Murata | GRM188R71H103KA01D | 1 | Murata | 0.10 | 0.10 | https://www.murata.com/en-global/products/productdetail?partno=GRM188R71H103KA01D |
| C2 | 1 µF Ceramic Capacitor | Murata | GRM188R60J105KA01D | 1 | Murata | 0.15 | 0.15 | https://www.murata.com/en-global/products/productdetail?partno=GRM188R60J105KA01D |
| D1-D10 | 5 mm Red LED | Kingbright | WP7113ID | 10 | Kingbright | 0.18 | 1.80 | https://www.kingbrightusa.com/product.asp?catalog_name=LED&product_id=WP7113ID |
| R1 | 1 kΩ 1/4W Through-Hole Resistor | Yageo | CFR-25JB-52-1K | 1 | Yageo | 0.02 | 0.02 | https://www.yageo.com/en/Product/Search?partNumber=CFR-25JB-52-1K |
| R2 | 470 Ω 1/4W Through-Hole Resistor | Yageo | CFR-25JB-52-470R | 1 | Yageo | 0.02 | 0.02 | https://www.yageo.com/en/Product/Search?partNumber=CFR-25JB-52-470R |
| RV1 | 50 kΩ Trimmer Potentiometer | Bourns | 3362P-1-503LF | 1 | Bourns | 1.25 | 1.25 | https://www.bourns.com/products/trimpot-trimming-potentiometers/product/3362 |
| U1 | NE555P Timer IC | Texas Instruments | NE555P | 1 | Texas Instruments | 0.60 | 0.60 | https://www.ti.com/product/NE555 |
| U2 | CD4017B Decade Counter | Texas Instruments | CD4017B | 1 | Texas Instruments | 0.75 | 0.75 | https://www.ti.com/product/CD4017B |
Features
- Heartbeat: An NE555 timer generates the clock signal.
- Speed Control: A 50kΩ potentiometer adjusts the LED flashing speed.
- Sequencer: A CD4017 decade counter cycles the signal through 10 steps.
- Rotating Effect: 10 LEDs arranged in a circular pattern for a rotating effect.
PCB Design
The PCB was designed with the reference of a piderweb, more specifically Spiderman
PCB
Schematic
Current Status
- Initial Concept
- Schematic Design
- PCB Design
- Hardware Validation
- Functional Testing
- Community Evaluation
Repository Structure
SpiderBlink/
├── PCB/
├── BOM.csv
├── Gallery/
└── README.mdAssemble Guide
1. Order the PCB
Navigate to:
./PCB/Gerber.zipUpload the Gerber files to your preferred PCB manufacturer.
2. Order Components
All required components can be found in:
./PCB/BOM.csv3. Solder the Components
Recommended assembly should follow a low-profile to high-profile sequence to simplify alignment and reduce rework.
Suggested order:
- 1/4W Resistors (R1, R2)
- Ceramic Capacitors (C1, C2)
- NE555P
- 5mm LEDs (D1–D10)
4. Inspect the Board
Before powering:
- Check for shorts
- Verify connections
- Inspect power rails
Contributing
Contributions, suggestions, and feedback are welcome.
If you'd like to improve SpiderBlink:
git clone https://github.com/Sudo-Aju/SpiderBlink.git
cd SpiderBlink- Create a feature branch
- Make your changes
- Commit your work
- Open a pull request
Creator
Azmeer Pirani
Built with ❤️ for:
- Embedded Systems
- PCB Design
- Open Source Hardware
- Tiny Things
License
This project is licensed under the MIT License.
SPIDERBLINK
Blinks every time it gets the tingle.
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | LED | LED_THT:LED_D3.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 3 | TestPoint | Connector_PinSocket_2.54mm:PinSocket_1x01_P2.54mm_Vertical | TP1, TP2, TP3 |
| 1 | 0.01 uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 1 uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C2 |
| 1 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 4017 | blinky:N16 | U2 |
| 1 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 50k | blinky:TRIM_3362P-1-102 | RV1 |
| 1 | NE555P | Package_DIP:DIP-8_W7.62mm | U1 |
Questions
How big is the Spider PCB?
It measures 39.6 × 41.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Spider use?
20 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 Spider KiCad files?
From the Sudo-Aju/SpiderBlink repository on GitHub, at the commit this page was made from: the board is PCB/Source/Spider.kicad_pcb and its schematic PCB/Source/Spider.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Spider design in my own project?
Its repository states no licence, so its author keeps all rights: ask Sudo-Aju before reusing the design.
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