CDE-3
About the CDE-3 PCB
CDE-3 is an open source PCB design by ArqueologiaDigital, published on GitHub. It is a 2-layer board measuring 160 × 100 mm, with 43 components from 8 distinct parts.
From the project
Schematics of the Patinho Feio CPU being redrawn on KiCAD. More info at: http://github.com/felipesanches/PatinhoFeio
Para o desenvolvimento desse projeto estou atualmente (Julho de 2025) utilizando o Kicad versão 9.0.2+dfsg-1 instalado a partir do repositório de pacotes do Debian 13. ----
Existe um arquivo patinhofeio.pro na raiz desse repo que referencia os demais sub-projetos de cada placa.
Em JAN/2018 eu encomendei a fabicação das PCBs CDE-3 e CDE-3-debug. Há um relato detalhado em https://forum.fiozera.com.br/t/resgate-historico-do-computador-patinho-feio-usp-1971/58/18
CDE-3 bill of materials (BOM)
43 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | 74HC04 | DIP-14_W7.62mm_Socket_LongPads | 1A_P10, 1B_P10, 2A_P10, 2B_P10, 3A_P10, 3B_P10 |
| 5 | 74LS10 | DIP-14_W7.62mm_Socket_LongPads | 1C_P10, 1D_P10, 1E_P10, 2D_P10, 3D_P10 |
| 1 | 74LS30 | DIP-14_W7.62mm_Socket_LongPads | 2C_P10 |
| 1 | 74LS13 | DIP-14_W7.62mm_Socket_LongPads | 2E_P10 |
| 7 | 7402 | DIP-14_W7.62mm_Socket_LongPads | 3C_P10, 4A_P10, 4B_P10, 4C_P10, 5A_P10, 5B_P10, 5C_P10 |
| 1 | 7400 | DIP-14_W7.62mm_Socket_LongPads | 4D_P10 |
| 1 | CONN_35X2 | DIN41612_C_3x32_Male_Horizontal_THT | CONECTOR_P10 |
| 21 | 0.1uF | C_Disc_D3.4mm_W2.1mm_P2.50mm | C1A_P10, C1B_P10, C1C_P10, C1D_P10, C1E_P10, C2A_P10, C2B_P10, C2C_P10 +13 |
CDE-3 design files
The KiCad project lives in the ArqueologiaDigital/PatinhoFeio_KICAD repository on GitHub; these links point at the commit this page was built from.
- LayoutCDE-3/CDE-3.kicad_pcb
- SchematicCDE-3/CDE-3.kicad_sch
CDE-3: common questions
How big is the CDE-3 PCB?
The CDE-3 measures 160 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the CDE-3?
43 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the CDE-3 design files?
From the ArqueologiaDigital/PatinhoFeio_KICAD repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the CDE-3 design in my own project?
The repository has no license, so all rights stay with ArqueologiaDigital. Use it as a reference, and ask the author before reusing the design.
