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2 layers25.4 × 53.3 mmLight module, the printed circuit board in 3D

Light module

Slugbotics/MATE3

Donts: - Do not push directly onto main, make a branch, make a pr, squash and merge. - Do not let branches sit for too long, if they arent merged within a week or two, discard it and move on.

Size
25.4 × 53.3 mm
Copper layers
2
Thickness
1.6 mm
Parts
8
Nets
6
Pads
14
Tracks, vias
14, 0
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
27 Sep 2023
Updated
7 Jun 2024

Overview

Light module is an open-source printed circuit board by Slugbotics, from the Slugbotics/MATE repository on GitHub. It is a 2-layer board of 25.4 × 53.3 mm with 8 parts on 6 nets, routed with 14 tracks and 0 vias.

It is built around the MP-5050-250R-40-70.

Main components

1

README

README.md

MATE

Git Standards

When making changes to the codebase, use feature branches. Tutorial can be found here https://medium.com/@stephencweiss/a-beginners-guide-to-feature-branch-workflows-with-git-7ae442df8e11

Donts:

  • Do not push directly onto main, make a branch, make a pr, squash and merge.
  • Do not let branches sit for too long, if they arent merged within a week or two, discard it and move on.
  • Do not make changes to the build system without adding them to this README
  • Do not add dependencies without adding them to requirements.txt

Dos:

  • Use feature branches, make pull requests, squash and merge
  • Keep branches to one feature at most
  • Name the branch a one to two word description of the feature
  • Use interactive rebase as the default merge strategy
  • Format your code using clang-format (c++) or black (python)
  • Commit messages should always be descriptive and with the following format:
    • "<Imperative Verb> <description of change>"

Python Standards:

  • Use type declarations / hints for all functions
  • write docstrings for non-obvious functions / methods
  • always write docstrings for classes
  • keep commenting minimal, if you code is not obvious, it is probably too complicated
  • keep nesting minimal, if you can nest less, you probably should

Installation

  • Install virtualenv https://virtualenv.pypa.io/en/latest/installation.html
  • virtualenv env to create the virtual environment
  • Run source env/bin/activate to start the virtual environment
  • Run pip install -r requirements.txt to install project dependencies
  • Run deactivate when you are done

Cameras

In order for the driver station GUI to properly access rover cameras:

  • create a file in the root project directory called "cams.txt"
  • find the device numbers of the cameras you want to use
  • place the numbers in order separated by newline in "cams.txt"
    • example, say you wish to use cameras 6, 5, 8, 10
    • You would place "6\n5\n8\n10" into cams.txt

Parts

8
QtyValueFootprintReferences
6MP-5050-250R-40-70MP-5050-250R-40-70:LED_MP-5050-250R-40-70D1, D2, D3, D4, D5, D6
1GNDMountingHole:MountingHole_2.2mm_M2_DIN965_PadGND
1VCCMountingHole:MountingHole_2.2mm_M2_DIN965_PadVCC

Questions

How big is the Light module PCB?

It measures 25.4 × 53.3 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Light module use?

8 parts, built around the MP-5050-250R-40-70. 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 Light module KiCad files?

From the Slugbotics/MATE repository on GitHub, at the commit this page was made from: the board is lights/V1/light_module/light_module.kicad_pcb and its schematic lights/V1/light_module/light_module.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Light module design in my own project?

Its repository states no licence, so its author keeps all rights: ask Slugbotics before reusing the design.

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