2 layers327.9 × 139 mm
Coco2
baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.
147 parts446
2 layers47 × 47 mm
FirstSchematic
Aundre2811/Astable-MultivibratorDesigned the PCB layout of an Astable Multivibrator using a 555 Timer IC
- Size
- 47 × 47 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 6
- Pads
- 30
- Tracks, vias
- 85, 9
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 1 Oct 2026
- Updated
- 1 Oct 2026
Overview
FirstSchematic is an open-source printed circuit board by Aundre2811, from the Aundre2811/Astable-Multivibrator repository on GitHub. It is a 2-layer board of 47 × 47 mm with 16 parts on 6 nets, routed with 85 tracks and 9 vias.
It is built around the NE555P. Its parts include 3 resistors, 2 capacitors, 1 IC, 1 diode and 1 connector.
Main components
1Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | Fiducial | Fiducial:Fiducial_1.5mm_Mask3mm | FID1, FID2, FID3, FID4 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.5mm_Pad | H1, H2, H3, H4 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 1 | 0.01uF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | NE555P | Package_SO:SOP-8_3.76x4.96mm_P1.27mm | U1 |
| 1 | POWER INPUT | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
Questions
How big is the FirstSchematic PCB?
It measures 47 × 47 mm and has 2 copper layers, 1.6 mm thick.
What parts does the FirstSchematic use?
16 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 FirstSchematic KiCad files?
From the Aundre2811/Astable-Multivibrator repository on GitHub, at the commit this page was made from: the board is FirstSchematic.kicad_pcb and its schematic 555_Timer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the FirstSchematic design in my own project?
Its repository states no licence, so its author keeps all rights: ask Aundre2811 before reusing the design.
Similar boards
- 2 layers370.8 × 298.5 mm
8 Bit Computer
The-Invent0r/8-bit-Computer-PCB
These are the KiCAD files for my 8-Bit Computer.
323 parts142 - 2 layers200 × 96 mm
Touchtone555
DarcyJProjects/touchtone555
An open-source DIY, NE555-based analogue synthesizer - play notes with a stylus
73 parts33 - 4 layers340 × 210 mm
- 2 layers152.9 × 74.9 mm
- 2 layers88.9 × 50.8 mm
SynthCard
benjiaomodular/SynthCard
I designed this project with the help of PCBWay. You can get a copy of these cards through the PCBWay Shared Projects page.
16 parts19MIT - 4 layers194.5 × 188.6 mm
MyCpu
fortinsylvain/MyCpu
Home brew CPU Hardware with 1-bit ALU implementation using 74LSxx, a micro-code and assembler coded in C#.
162 parts18MIT - 2 layers145.3 × 129.9 mm
C128Diag
hackup/C128Diag
Replica of the Commodore C128 Diagnostic Test cartridge Assy No. 325093-01.
61 parts16