Open-Source Hardware Bible

Poor part selection is a leading factor in the death of open-source hardware projects. With vendor lock-in and country-specific availability, it only takes a few changes for parts to become inaccessible.

Avoiding these pitfalls requires open standards and parts which are:

• Internationally standardized
• Often metric (depends on industry)
• Inexpensive
• In widespread use

For bearings, extrusions, belts, gears, etc., here are my opinionated recommendations, based on ISO, ANSI, ASTM, CEN, and UTS standards for common mechatronics components. Datasheets included where possible.

CAD Tip: Install the SOLIDWORKS extensions for McMaster-Carr and Misumi (Misumi install is rather bloated) to import their standardized components into your assembly.

Fasteners:

• DIN 912 TODO
  • ref page / ISO 4762
  • ref page / DIN 912 (old)
• ISO 7380-1 TODO
  • ref page

Hand Tools:

• Hex Bit ISO 1173 TODO
  • Style C & D 6.3, both quick-change compatible
• Crimper SN-58B-style TODO
  • exchangeable chucks

Extrusion:

• Extrusion T-Nuts TODO
  • ref page, Misumi EC Extrusion T-Nuts Guide

Lab Storage:

• Durham Component Box

Cables:

• JST PH v. GH v. XH TODO
  • JST PH ref page
  • JST GH ref page
  • JST XH ref page
• USB-C TODO

Motor Components:

• NEMA TODO
• AMT22 Rotary Sensor, Same Sky Devices
• DRV8302 TODO
  • ref page

WORK IN PROGRESS

Embedded Devices 3D Models:

TODO

• Arduino UNO R3
• ESP32-C3 DevKitC
• Jetson Orin Nano