IDC-26 Adapter for Apple III
FujiNetWIFI·fujinet-hardware·AppleIII/IDC-26-Adapter-Rev1/IDC-26-Adapter-Rev1.kicad_pcb
About the IDC-26 Adapter for Apple III PCB
IDC-26 Adapter for Apple III is an open source PCB design by FujiNetWIFI, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 47.8 × 17 mm, with 13 components from 11 distinct parts.
Other key parts include the C529589. By type, the board carries 5 jumpers, 4 resistors, 2 connectors, 1 IC and 1 capacitor.
From the project
Schematics and design files for FujiNet hardware
An IDC-26 to IDC-20 adapter allowing to to use yourApple II Fujinet, Floppy Emu, or Disk II drive on the external floppy port of an Apple III. Based on the work of ThorstenBr, but redesigned to plug directly into the external port and adds the option to route the drive 2 enable signal to pin 17, since Fujinet uses a different pin than the Floppy Emu which expects that signal on pin 5.

Main components on the IDC-26 Adapter for Apple III
IDC-26 Adapter for Apple III bill of materials (BOM)
13 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C529589 74LS32 Espressif | SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | 7-745288-2 IDC-20 | IDC-Header_2x10_P2.54mm_Vertical | J1 |
| 1 | C5178539 IDC-26 Bestcreate Technology Limited | PinSocket_2x13_P2.54mm_Vertical | J2 |
| 1 | +12V | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | Pin17 | SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels | JP2 |
| 1 | -12V | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3 |
| 1 | Pin5 | SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels | JP4 |
| 1 | Pin19 | SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels | JP5 |
| 1 | C23733 100nf | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 3 | C25744 3.3K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3 |
| 1 | C25862 470R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
IDC-26 Adapter for Apple III design files
The KiCad project lives in the FujiNetWIFI/fujinet-hardware repository on GitHub; these links point at the commit this page was built from.
IDC-26 Adapter for Apple III: common questions
How big is the IDC-26 Adapter for Apple III PCB?
The IDC-26 Adapter for Apple III measures 47.8 × 17 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the IDC-26 Adapter for Apple III?
13 components, from 11 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 IDC-26 Adapter for Apple III design files?
From the FujiNetWIFI/fujinet-hardware 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 IDC-26 Adapter for Apple III design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which FujiNetWIFI chose for the repository.
More boards in fujinet-hardware
ESP32
FujiNet-Astrocade-Rev0
FujiNetWIFI
96 × 58 mm77 parts6LCERN-OHL-S-2.0138ESP32
FujiNet-INTV-Rev0
FujiNetWIFI
58.2 × 78 mm77 parts4LCERN-OHL-S-2.0138ESP32
FujiNet ESP32-DevKitC-VE Shield
FujiNetWIFI
99.1 × 55.9 mm40 parts2LCERN-OHL-S-2.0138ESP32
FujiApple DevKit IDC-20
FujiNetWIFI
41 × 56.9 mm30 parts2LCERN-OHL-S-2.0138ESP32
FujiApple DevKit Combo
FujiNetWIFI
41 × 65.3 mm30 parts2LCERN-OHL-S-2.0138ESP32
FujiApple DevKit SmartPort
FujiNetWIFI
41 × 56.9 mm29 parts2LCERN-OHL-S-2.0138RP2040/RP2350
Apple 68k FujiNet
FujiNetWIFI
80.8 × 55.4 mm22 parts2LCERN-OHL-S-2.0138ESP32
CoCo FujiNet
FujiNetWIFI
86 × 55.4 mm22 parts2LCERN-OHL-S-2.0138SmartPortSD SMD
FujiNetWIFI
41 × 20.6 mm4 parts2LCERN-OHL-S-2.0138