
Front panel.processor
lynchaj/duodyne
Duodyne is a hobbyist retrocomputer system designed to run ROMWBW. It is comprised of modules on a system bus

Alternate Duodyne Compatible Front Panel
Front panel.processor is an open-source printed circuit board by danwerner21, from the danwerner21/duodyne_frontpanel_alt repository on GitHub. It is a 2-layer board of 295 × 80 mm with 34 parts on 100 nets, routed with 574 tracks and 40 vias.
It is built around the 74LS240DC and ESP32-S3-DEVKITC-1-N8. Its parts include 13 switches, 9 diodes, 3 connectors, 2 ICs and 1 resistor. It belongs with the ESP32 boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | SW_SPDT | SW_Toggle_Blue_wSlots:SW_Toggle_Blue_wSlots | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW10, SW11, SW12, SW13 |
| 9 | LED | LED_THT:LED_D3.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 1 | 470 | Resistor_THT:R_Array_SIP9 | RN1 |
| 1 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6 |
| 1 | 74LS240 | Package_DIP:DIP-20_W7.62mm | U1 |
| 1 | ESP32-S3-DevKitC | Espressif:ESP32-S3-DevKitC | U2 |
| 1 | FPANEL | Connector_IDC:IDC-Header_2x20_P2.54mm_Horizontal | J1 |
| 1 | MICRO SD CARD | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J3 |
| 1 | SSD1306 | SSD1306:128x64OLED | Brd1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW9 |
| 1 | TTL SERIAL | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J2 |

lynchaj/duodyne
Duodyne is a hobbyist retrocomputer system designed to run ROMWBW. It is comprised of modules on a system bus

tebl/RC1802-Cosmac-ELF
With the RC6502-project for making an Apple 1 replica done I wanted to do something different, so I started designing a simple version of the RCA 1802-based Cosmac ELF instead.


fabiodl/sf7000
Most of the work was done by Andrea Ottaviani https://github.com/aotta




Domesday86/Acorn-AIV-SCSI-Adapter-Card
A reproduction of the original Acorn AIV SCSI Adapter Card in KiCAD (as used in the BBC Domesday System)
It measures 295 × 80 mm and has 2 copper layers, 1.6 mm thick.
34 parts, built around the 74LS240DC and ESP32-S3-DEVKITC-1-N8. 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 danwerner21/duodyne_frontpanel_alt repository on GitHub, at the commit this page was made from: the board is front-panel.processor.kicad_pcb and its schematic front-panel.processor.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 danwerner21 before reusing the design.