FloppyBird
About the FloppyBird PCB
FloppyBird is an open source PCB design by inmbolmie, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 88.9 × 59.7 mm, with 25 components from 16 distinct parts.
Other key parts include the 74LS08, TLC555XD, 74LS06, 74LS86 and 74LS04. By type, the board carries 8 capacitors, 7 resistors, 6 ICs and 4 switches.
From the project
Disk interface to adapt an PC floppy drive to an IBM 31SD/51TD controller
Disk interface to adapt a Gotek floppy emulator to an IBM 31SD/51TD controller
This adapter will allow to connect a regular PC Floppy or Gotek emulator to an IBM 8" host like those big-iron machines that use the IBM 31SD and 51TD diskette drives.
The target device is a Gotek emulator running FlashFloppy, but in theory it should be possible to use a real 5,25 1.2MB floppy drive, as they have 80 tracks (only 77 are needed to emulate an IBM Diskette) and they rotate at 360 RPM like the regular IBM 8" diskettes.
Main components on the FloppyBird
FloppyBird bill of materials (BOM)
25 components, 16 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LS08 | SO-14_3.9x8.65mm_P1.27mm | U1 |
| 1 | TLC555XD TLC555xD | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | 74LS06 | SO-14_3.9x8.65mm_P1.27mm | U3 |
| 1 | 74LS86 | SO-14_3.9x8.65mm_P1.27mm | U4 |
| 1 | 74LS04 | SO-14_3.9x8.65mm_P1.27mm | U5 |
| 1 | 74LS32 | SO-14_3.9x8.65mm_P1.27mm | U6 |
| 1 | C221880 Reset | SW_Push_1P1T_NO_6x6mm_H9.5mm | SW1 |
| 1 | C145845 Diskette Type Selection | SW-SMD_SS-3235S-L3.00 | SW3 |
| 1 | C145845 Drive Selection | SW-SMD_SS-3235S-L3.00 | SW4 |
| 1 | C145845 Motor always on | SW-SMD_SS-3235S-L3.00 | SW5 |
| 1 | 10NF 10nF | C_0603_1608Metric | C1 |
| 1 | 150PF 150pF | C_0603_1608Metric | C2 |
| 6 | 100NF 100nF | C_0603_1608Metric | C3, C4, C5, C6, C7, C8 |
| 2 | 91 | R_1206_3216Metric | R1, R15 |
| 1 | 2K | R_0603_1608Metric | R2 |
| 4 | 1K | R_0603_1608Metric | R10, R11, R12, R13 |
FloppyBird design files
The KiCad project lives in the inmbolmie/FloppyBird repository on GitHub; these links point at the commit this page was built from.
- LayoutKiCad/FloppyBird.kicad_pcb
- SchematicKiCad/FloppyBird.kicad_sch
- BOMpcb/v1.1/bom.csv
FloppyBird: common questions
How big is the FloppyBird PCB?
The FloppyBird measures 88.9 × 59.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the FloppyBird?
25 components, from 16 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the FloppyBird design files?
From the inmbolmie/FloppyBird repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the FloppyBird design in my own project?
Yes, under the terms of its GPL-3.0 license, which inmbolmie chose for the repository.