2 layers327.9 × 139 mm
Coco2
baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.
147 parts446
2 layers100 × 92.9 mm
Adr555
LegendPlayz83/adr555This is my 555 timer project made in KiCad
- Size
- 100 × 92.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 18
- Pads
- 58
- Tracks, vias
- 167, 27
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 25 Apr 2026
- Updated
- 25 Apr 2026
Overview
Adr555 is an open-source printed circuit board by LegendPlayz83, from the LegendPlayz83/adr555 repository on GitHub, published under the MIT licence. It is a 2-layer board of 100 × 92.9 mm with 21 parts on 18 nets, routed with 167 tracks and 27 vias.
It is built around the NE555P. Its parts include 10 diodes, 2 capacitors, 2 resistors, 2 ICs and 2 connectors.
Main components
1README
README.mdadr555
This is my 555 timer blinky project made in KiCad
PCB:
Schematic:
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | LED | LED_THT:LED_D3.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 0.01uF | Capacitor_THT:C_Disc_D7.5mm_W2.5mm_P5.00mm | C2 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 1uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 4017 | cd4017:N16 | U2 |
| 1 | 470k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 50k | Potentiometer_THT:Potentiometer_Vishay_T93XA_Horizontal | RV1 |
| 1 | Conn_01x01_Socket | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J2 |
| 1 | Conn_01x02_Socket | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | NE555P | Package_DIP:DIP-8_W7.62mm | U1 |
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Questions
How big is the Adr555 PCB?
It measures 100 × 92.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Adr555 use?
21 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 Adr555 KiCad files?
From the LegendPlayz83/adr555 repository on GitHub, at the commit this page was made from: the board is adr555/adr555.kicad_pcb and its schematic adr555/adr555.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Adr555 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).