Floppy overdrive
About the Floppy overdrive PCB
Floppy overdrive is an open source PCB design by Emu-gators, published on GitHub. It is a 2-layer board measuring 163 × 104 mm, with 61 components from 35 distinct parts.
Other key parts include the THS4521IDR, MAX660MX/NOPB, TXB0108-PW, ULN2003 and IceWerx FPGA. By type, the board carries 25 resistors, 10 connectors, 9 capacitors, 7 ICs, 4 diodes and 3 jumpers.
From the project
A revival of the floppy disk drive and controller for modern computers.
A revival of the floppy disk drive and controller for modern computers. Sending floppies into overdrive!
The project is laid out with the following directories:
- docs: relevant project documentation and research resources - hw: HDL code and testbenches - pcb : KiCad project for the control circuit PCB - pcbtests : Test code and procedures for the control circuit PCB - sw`: software code and scripts
Main components on the Floppy overdrive
Floppy overdrive bill of materials (BOM)
61 components, 35 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | THS4521IDR | SOIC127P600X175-8N | IC1, IC2 |
| 1 | MAX660MX/NOPB MAX660MX_NOPB | SOIC127P600X175-8N | IC3 |
| 2 | TXB0108-PW | TSSOP-20_4.4x6.5mm_P0.65mm | U1, U2 |
| 1 | ULN2003 | TSSOP-16_4.4x5mm_P0.65mm | U3 |
| 1 | IceWerx FPGA | IceWerx FPGA | U4 |
| 1 | 174804-1 | 1748041 | J1 |
| 1 | Motor_Header | SHDRRA4W50P15X200_1X4_1000X770X525P | J2 |
| 1 | Floppy_Bus | PinHeader_2x17_P2.54mm_Vertical | J3 |
| 1 | Sensor_Header | PinHeader_2x05_P2.54mm_Horizontal | J4 |
| 1 | Heads_Header | PinHeader_2x05_P2.54mm_Horizontal | J5 |
| 1 | Step_Header | PinHeader_2x05_P2.00mm_Horizontal | J6 |
| 1 | PIC_ADC_Header | PinHeader_2x02_P2.54mm_Vertical | J7 |
| 1 | FPGA_IO_Header | PinHeader_2x20_P2.54mm_Vertical | J8 |
| 1 | HeadOut_Header | PinHeader_2x04_P2.54mm_Vertical | J9 |
| 1 | Flop_ADC_Header | PinHeader_1x02_P2.54mm_Vertical | J10 |
| 1 | LED_Enable | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | HeadPos_Sel | PinHeader_1x03_P2.54mm_Vertical | JP2 |
| 1 | HeadNeg_Sel | PinHeader_1x03_P2.54mm_Vertical | JP3 |
| 1 | RST_Btn | SW_PUSH_6mm | SW1 |
| 1 | LED1 | LED_D5.0mm | D1 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LED2 | LED_D5.0mm | D2 |
| 1 | LED3 | LED_D5.0mm | D3 |
| 1 | LED4 | LED_D5.0mm | D4 |
| 2 | FerriteBead | R_1206_3216Metric | FB1, FB2 |
| 5 | 0.1u | C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C2, C5, C6, C7 |
| 2 | 33u | CP_Radial_D5.0mm_P2.00mm | C3, C4 |
| 2 | 47u | C_Disc_D5.0mm_W2.5mm_P2.50mm | C8, C9 |
| 4 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R9 |
| 2 | 47k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R10 |
| 1 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 3 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6, R7, R11 |
| 1 | 22k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8 |
| 4 | 510 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R12, R13, R14, R15 |
| 6 | 10k | R_0402_1005Metric | R16, R17, R20, R21, R24, R25 |
| 4 | 1k | R_0402_1005Metric | R18, R19, R22, R23 |
Floppy overdrive design files
The KiCad project lives in the Emu-gators/floppy-overdrive repository on GitHub; these links point at the commit this page was built from.
Floppy overdrive: common questions
How big is the Floppy overdrive PCB?
The Floppy overdrive measures 163 × 104 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Floppy overdrive?
61 components, from 35 distinct parts. The full bill of materials is listed on this page.
Where can I download the Floppy overdrive design files?
From the Emu-gators/floppy-overdrive repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Floppy overdrive design in my own project?
The repository has no license, so all rights stay with Emu-gators. Use it as a reference, and ask the author before reusing the design.