
Coco2
baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.

1kHz-555-timer is an open-source printed circuit board by u7925504, from the u7925504/PCB-learning-tasks repository on GitHub. It is a 2-layer board of 31 × 38 mm with 11 parts on 9 nets, routed with 42 tracks and 33 vias.
It is built around the NE555P. Its parts include 3 diodes, 2 capacitors, 2 resistors, 2 connectors and 1 IC.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | D | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2, D3 |
| 2 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J1, J2 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Bourns_3386W_Horizontal | RV1 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2 |
| 1 | 1n | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | 330 | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R1 |
| 1 | 470u | Capacitor_SMD:CP_Elec_6.3x5.4_Nichicon | C2 |
| 1 | LED | LED_THT:LED_D3.0mm_Clear | D1 |
| 1 | NE555P | Package_DIP:DIP-8_W7.62mm | U1 |
It measures 31 × 38 mm and has 2 copper layers, 1.6 mm thick.
11 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.
From the u7925504/PCB-learning-tasks repository on GitHub, at the commit this page was made from: the board is 1kHz-555-timer/1kHz-555-timer.kicad_pcb and its schematic 1kHz-555-timer/1kHz-555-timer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask u7925504 before reusing the design.

baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.

The-Invent0r/8-bit-Computer-PCB
These are the KiCAD files for my 8-Bit Computer.

DarcyJProjects/touchtone555
An open-source DIY, NE555-based analogue synthesizer - play notes with a stylus



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.

fortinsylvain/MyCpu
Home brew CPU Hardware with 1-bit ALU implementation using 74LSxx, a micro-code and assembler coded in C#.

hackup/C128Diag
Replica of the Commodore C128 Diagnostic Test cartridge Assy No. 325093-01.