/* Imported from Wayback Machine
   Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:plasmo:tiny302pcb
   Snapshot date: 2025-05-16
   Generator    : wayback-archiver
*/

Tiny302 pc board design

After the successful fabrication of Tiny302 prototype and a working monitor running on the Tiny302 prototype. It is time to put the design in a pc board. To minimize cost, the pc board form factor is 100mm x 100mm. This is a tight board, all components barely fit in the small form factor. The schematic is created with WinDraft, and the board is layout using WinBoard. As a part of the WinBoard package is license & interface to the Specctra autorouter (version 8–this is a 20-year old software, after all). The board is manually placed and then autorouted with the Specctra router in 2-layer. Specctra router is extremely fast, the autoroute is done in less than 5 minutes.

Use the naming convention provided by Seeed Studio, the routed design files are zipped and uploaded to Seeed Studio and proofed using their on-line gerber viewer.

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:tiny302:tiny302_pcb_scm.pdf|schematic]] of Tiny302 pcb

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:tiny302:tiny302.zip|design files]] uploaded to Seeed Studio

bare pc board, [[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=39366c&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Fmedia%3Dbuilderpages%3Aplasmo%3Atiny302%3Atiny302_pcb_comp.jpg|component side]]

bare pc board, [[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=c5ea4d&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Fmedia%3Dbuilderpages%3Aplasmo%3Atiny302%3Atiny302_pcb_solder.jpg|solder side]]

Core components are the minimal set of parts required to boot up Tiny302.

Tiny302 pcb populated with [[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=07afb9&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Fmedia%3Dbuilderpages%3Aplasmo%3Atiny302%3Atiny302pcb_core_comp.jpg|core components, component side]]

Tiny302 pcb populated with [[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=e1d611&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Fmedia%3Dbuilderpages%3Aplasmo%3Atiny302%3Atiny302pcb_core_solder.jpg|core component, solder side]]

Fully populated Tiny302 [[https://retrobrewcomputers.org/lib/exe/fetch.php?tok=2c49ef&media=https%3A%2F%2Fwww.retrobrewcomputers.org%2Flib%2Fexe%2Ffetch.php%3Fmedia%3Dbuilderpages%3Aplasmo%3Atiny302%3Atiny302pcb_all_led.jpg|with EASy68k hardware display]]

Tiny302 [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:tiny302:tiny302_bom.xlsx|part list]]

[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:tiny302:tiny302pcb_all_led.jpg|{{https://retrobrewcomputers.org/lib/exe/fetch.php?w=500&h=462&tok=553bda&media=builderpages:plasmo:tiny302:tiny302pcb_all_led.jpg?500x462|tiny302pcb_all_led.jpg}}]]