SPIRIT-org/SPIRIT

Addons standard

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#88 opened on Feb 5, 2026

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documentation/wikiexternal addongood first issuehelp wanted

Description

Need to come up with a smart standard for designing add-ons.

The Pine64 magnetic (?) pogo connector system can be used as an inspiration.

Electronics requirements: -power lane (5/3.3V) at least 1-2W -GND -I2C, UART (or other simple protocol) lanes -SYS connection (system power, see power schematic) for external batteries -protection on all of the exposed pins (overcurrent, overvoltage, polarity etc.)

Mechanical requirements: -mechanism for securely and conveniently attaching the addons to the chassis, probably at the back. Needs to be discussed with chassis team probably.

Pogo pins connectors:

e.g. phone can be male, addon can be female.

After we have a suitable standard it needs to be tested and documented in the wiki. Then people can start developing addons.

Contributor guide

Tech stack
None
Domain
documentationdesign
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
basic electronics knowledgemechanical design understanding
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
This issue proposes a hardware add on standard for the SPIRIT smartphone. The key requirements are outlined for electronics (power, I2C, UART, protection) and mechanics (attachment mechanism). To contribute, one should review the existing hardware schematics and discuss with the chassis team. Investigate the Pine64 pogo pin connector for inspiration and propose a detailed standard including pinout, tolerances, and testing procedures. Document the standard in the project wiki after refinement.