2 layers
Nrf bga
github-linguist/linguist
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12 parts14kMIT
2 layers45 × 5 mm
The only purpose of this is to provide a nice end to the chain. It has rounded corners like the PSU at the beginning, and it also has a 120ohm termination resistor for the RS485 bus.
- Size
- 45 × 5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 12
- Nets
- 5
- Pads
- 16
- Tracks, vias
- 6, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 7 Nov 2025
- Updated
- 14 Jul 2026
Overview
End Cap is an open-source printed circuit board by techy-robot, from the techy-robot/CACKLE-Passive-Endcap repository on GitHub. It is a 2-layer board of 45 × 5 mm with 12 parts on 5 nets, routed with 6 tracks and 0 vias.
Its parts include 9 connectors and 1 resistor.
README
README.mdmodified: 2025-11-07T22:07:55-07:00
End Cap
[!TIP] This board is part of a larger modular control board ecosystem, CACKLE
The only purpose of this is to provide a nice end to the chain. It has rounded corners like the PSU at the beginning, and it also has a 120ohm termination resistor for the RS485 bus. You can skip using an end cap if you hand solder a termination resistor and tape up the driver edge connectors to prevent shorts.
Parts
12| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | Keystone 3569 | custom_Connector:Keystone_3569_half | J3, J5, J7, J9 |
| 4 | Keystone 3579 | custom_Connector:Keystone_3579 | J2, J4, J6, J8 |
| 1 | 1.27mm 4 pin header | Connector_PinHeader_1.27mm:PinHeader_1x04_P1.27mm_Vertical | J1 |
| 1 | 120ohm | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 3.3v | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
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Questions
How big is the End Cap PCB?
It measures 45 × 5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the End Cap use?
12 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the End Cap KiCad files?
From the techy-robot/CACKLE-Passive-Endcap repository on GitHub, at the commit this page was made from: the board is End Cap.kicad_pcb and its schematic End Cap.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the End Cap design in my own project?
Its repository states no licence, so its author keeps all rights: ask techy-robot before reusing the design.