PI1551-III Module
About the PI1551-III Module
PI1551-III Module is an open source PCB design by ytmytm, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 100 × 100 mm, with 30 components from 5 distinct parts.
By type, the board carries 24 resistors, 4 transistors and 1 diode.
It belongs with the retro computing designs in this gallery.
From the project
Pi1551 in a Pi1541-III-style case: 1551 + TAP for Plus/4/C16, no 3D printing
- 1> Build instructions - 2> Schematic - 3> BOM
\ Recommended not to install J1 (barrel jack) or C6 (470 µF). Power the device from the Raspberry Pi’s USB Micro port.
D2 (Schottky): Orient with the cathode stripe towards the silkscreen mark.
1) For LEDs on Pi1551-III Module Panel; 470 Ω suits most coloured LEDs — use a higher value for blue or "bright" types. 2) M3 nylon standoff kits usually contain what you need; check quantities. 3) Only when not installing bottom faceplate (Pi1551-III Faceplate FB2).
PI1551-III Module bill of materials (BOM)
30 components, 5 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | MMBT3904 | SOT-23_Handsoldering | Q1, Q2, Q3, Q4 |
| 1 | — | Pi1541-drive | Pi1541-drive |
| 1 | BAT54 | D_SOD-123 | D2 |
| 22 | 3.3K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R4, R5, R6, R7, R8, R9, R10 +14 |
| 2 | 470* | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3 |
PI1551-III Module design files
The KiCad project lives in the ytmytm/Pi1551-III repository on GitHub; these links point at the commit this page was built from.
PI1551-III Module: common questions
How big is the PI1551-III Module?
The PI1551-III Module measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the PI1551-III Module?
30 components, from 5 distinct parts. The full bill of materials is listed on this page.
Where can I download the PI1551-III Module design files?
From the ytmytm/Pi1551-III repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the PI1551-III Module design in my own project?
Yes, under the terms of its CERN-OHL-1.2 license, which ytmytm chose for the repository.
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