A500 IDE led
About the A500 IDE led PCB
A500 IDE led is an open source PCB design by hkzlab, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 20.5 × 11.7 mm, with 10 components from 10 distinct parts.
Other key parts include the 74AHCT1G07. By type, the board carries 3 connectors, 3 resistors, 1 IC, 1 transistor, 1 jumper and 1 capacitor.
From the project
This board makes the A500 "DRIVE" LED blink for other activity too, for example, when an IDE drive is in use
Any use of this project is under your own responsibility. You will be responsible of checking the correct construction and functionality of your board. By using this project You will agree that I cannot be held responsible if it will destroy any of your devices, damage your computer, burn down your house or whatever.
This board reproduces the same circuit that the A500 uses to flash the "DRIVE" LED when the /MTR0 signal is toggled, and puts itself in parallel to that by being installed between the keyboard and the connector on the motherboard.
Main components on the A500 IDE led
A500 IDE led bill of materials (BOM)
10 components, 10 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74AHCT1G07 | SOT-353_SC-70-5_Handsoldering | U1 |
| 1 | 2N3906 | TO-92_Inline | Q1 |
| 1 | Motherboard | PinSocket_1x08_P2.54mm_Vertical | J1 |
| 1 | Keyboard | PinHeader_1x08_P2.54mm_Vertical | J2 |
| 1 | ~{IDE_ACTIVITY} | PinHeader_1x01_P2.54mm_Vertical | J3 |
| 1 | Buffer Bypass | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 4.7K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
A500 IDE led design files
The KiCad project lives in the hkzlab/A500_IDE_led repository on GitHub; these links point at the commit this page was built from.
- Layouta500_ide_floppy_led.kicad_pcb
- Schematica500_ide_floppy_led.kicad_sch
A500 IDE led: common questions
How big is the A500 IDE led PCB?
The A500 IDE led measures 20.5 × 11.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the A500 IDE led?
10 components, from 10 distinct parts. The full bill of materials is listed on this page.
Where can I download the A500 IDE led design files?
From the hkzlab/A500_IDE_led repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the A500 IDE led design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.