Grid compass fdd-2102
About the Grid compass fdd-2102 PCB
Grid compass fdd-2102 is an open source PCB design by vklachkov, published on GitHub. It is a board, with 39 components from 26 distinct parts.
Other key parts include the WD2797, 74LS109 and SN75452BP. By type, the board carries 13 resistors, 6 connectors, 4 ICs, 4 relays, 4 test points and 4 capacitors.
From the project
Reverse engineering of portable floppy disk drive 2102 for GRiD Compass
This is a project to reverse engineer the 2102 floppy drive from 1983 for the GRiD Compass laptop. The project is for fun and to fix bugs in the blackgpib project.
2. Complete schematics by @JDat. 3. Full dump of PAL chip by @JDat. 4. Firmware reverse engineering is ~80% complete by me and Kirill from Xecut Hackspace.
Main components on the Grid compass fdd-2102
Grid compass fdd-2102 bill of materials (BOM)
39 components, 26 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | WD2797 | DIP-40_W15.24mm | U12 |
| 2 | 74LS109 | DIP-16_W7.62mm | U13, U14 |
| 1 | SN75452BP | DIP-8_W7.62mm | U15 |
| 1 | test | J4 | |
| 2 | ~ | J5, J6 | |
| 1 | To Floppy Controller Board (40Pin) | P6 | |
| 1 | FDD 40pin | P7 | |
| 1 | Molex | TE_MATE-N-LOK_350211-1_1x04_P5.08mm_Vertical | P8 |
| 1 | 1N914 | D_DO-35_SOD27_P10.16mm_Horizontal | CR2 |
| 2 | nf | Relay_SPST-NO_Fujitsu_FTR-LYAA005x_FormA_Vertical | K1, K4 |
| 2 | 5V GOULD Allied Control | Relay_SPST-NO_Fujitsu_FTR-LYAA005x_FormA_Vertical | K2, K3 |
| 1 | WrData | TP1 | |
| 1 | DIR | TP2 | |
| 1 | TG43/TEST_OUT | TP3 | |
| 1 | GND | TP4 | |
| 2 | ~ | L_0603_1608Metric | FB1, FB2 |
| 1 | unk | L1 | |
| 1 | 47uF | CP_Axial_L21.0mm_D8.0mm_P28.00mm_Horizontal | C3 |
| 1 | ~ | CP_Axial_L10.0mm_D4.5mm_P15.00mm_Horizontal | C5 |
| 1 | ~ | C_Disc_D6.0mm_W2.5mm_P5.00mm | C6 |
Show 6 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ~ | CP_Radial_Tantal_D4.5mm_P2.50mm | C7 |
| 8 | 10k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3, R4, R5, R6, R7, R8, R9, R13 |
| 1 | 10k | Potentiometer_ACP_CA6-H2,5_Horizontal | R10 |
| 1 | 50k | Potentiometer_ACP_CA6-H2,5_Horizontal | R11 |
| 1 | 1k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R12 |
| 2 | 150 | R_Array_SIP8 | RN2, RN3 |
Grid compass fdd-2102 design files
The KiCad project lives in the vklachkov/grid-compass-fdd-2102 repository on GitHub; these links point at the commit this page was built from.
Grid compass fdd-2102: common questions
How many components are on the Grid compass fdd-2102?
39 components, from 26 distinct parts. The full bill of materials is listed on this page.
Where can I download the Grid compass fdd-2102 design files?
From the vklachkov/grid-compass-fdd-2102 repository on GitHub, which has the schematic; the links under Design files point to each one.
Can I use the Grid compass fdd-2102 design in my own project?
The repository has no license, so all rights stay with vklachkov. Use it as a reference, and ask the author before reusing the design.