Connector Field Guides

Practical connector selection without the folklore, forum archaeology, and "looks close enough" nonsense.

Two guides, one site. Pick the track that matches your project — they cross-link where it matters, and both follow the same rule: the datasheet, standard, and requirement always win over anything written here.

Maker / Hobby

Hobby Connector Field Guide

For makers, students, Arduino/Raspberry Pi/ESP32/Pico projects, 3D printers, RC, LEDs, sensors, small robots, home automation, and prototype wiring.

Learn to identify mystery connectors · untangle JST-family confusion · choose connectors for sensors, LEDs, batteries, servos, and dev boards · buy the right mating parts · crimp without losing your mind · know when hobby connectors are not enough

Enter the Hobby Guide →

Engineering / Production

Professional / Industrial Connector Field Guide

For electromechanical systems, industrial equipment, robotics platforms, sealed enclosures, released harnesses, design reviews, and production hardware.

Covers requirements and ratings · environment and derating · standards and qualification · cable drawings and connector ICDs · tooling and workmanship · lifecycle and field-service risk

Enter the Engineering Guide →

Not sure?

Question	Hobby guide	Engineering guide
Is this a breadboard/dev-board project?	Yes	Maybe
Is this going outside, on a vehicle, or into fielded equipment?	Maybe	Yes
Is failure annoying but safe?	Yes	Maybe
Is failure expensive, dangerous, or customer-facing?	No	Yes
Are you buying connector kits online?	Yes	Maybe
Are you making released drawings, ICDs, or harness documentation?	No	Yes
Does someone else need to build, inspect, or maintain it?	Maybe	Yes

Still torn? The longer answer is Hobby or Professional? — the boundary is consequence of failure, environment, and documentation, not how fancy the connector is.

Both tracks share the site's Source Notes — the transparency dashboard for what is verified, what is judgment, and what is example-only — the Glossary, and the Connector Identification Workflow.

Onboarding someone? How to Use This Guide with an Intern turns the reading order, exercises, and templates into a four-week mentoring program.