Diff Expansion
computergeek1507·PB_16·Diff_Expansion/Diff_Expansion.kicad_pcb
About the Diff Expansion PCB
Diff Expansion is an open source PCB design by computergeek1507, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 84.3 × 84.3 mm, with 20 components from 8 distinct parts.
Other key parts include the AM26C31IN. By type, the board carries 6 connectors, 5 resistors, 4 ICs, 4 capacitors and 1 diode.
From the project
Open source FPP PB16 Pixel Controller
This documentation describes Open Hardware and is licensed under the CERN Open Hardware License Version 2 - Strongly Reciprocal. (CERN-OHL-S)
You may redistribute and modify this documentation under the terms of the CERN OHL-S-v2 (https://ohwr.org/cernohls_v2.txt). This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN OHL v2-S for applicable conditions

Main components on the Diff Expansion
Diff Expansion bill of materials (BOM)
20 components, 8 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | AM26C31IN AM26C31 | DIP-16_W7.62mm | U1, U2, U3, U4 |
| 4 | A-2014-2-4-R RJ45 | RJ45_Amphenol_54602-x08_Horizontal | J1, J2, J3, J4 |
| 1 | SBH11-PBPC-D20-ST-BK Expansion Header | IDC-Header_2x20_P2.54mm_Vertical | J5 |
| 1 | 302-S241 v4 Input | OST_302-S241 | J6 |
| 1 | WP3A8GD 5V LED | LED_D3.0mm_Clear | D1 |
| 4 | SR215C104KARTR1 0.1uF | C_Rect_L7.0mm_W2.0mm_P5.00mm | C1, C2, C3, C4 |
| 1 | CF14JT120R 120 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 4 | 4608X-102-121LF 120 | R_Array_SIP8 | RN1, RN2, RN3, RN4 |
Diff Expansion design files
The KiCad project lives in the computergeek1507/PB_16 repository on GitHub; these links point at the commit this page was built from.
Diff Expansion: common questions
How big is the Diff Expansion PCB?
The Diff Expansion measures 84.3 × 84.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Diff Expansion?
20 components, from 8 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 Diff Expansion design files?
From the computergeek1507/PB_16 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 Diff Expansion design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which computergeek1507 chose for the repository.
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