SPIRIT-org/SPIRIT

GSM/GPS section (EG25 GSM/GPS, SIM holder)

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#18 opened on Aug 10, 2025

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help wanted

Description

Help needed with implementing the GSM/GPS schematic in KiCad

(old image)

Main chip: https://www.digikey.pl/en/products/detail/quectel/EC25VFA-512-STD/13278151 https://www.digikey.pl/en/products/detail/quectel/EG25GGB-256-SGNS/21272668

Datasheet: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/7133/Quectel_EG25-GL_LTE_Standard_Specification_V1.3.pdf

Contributor guide

Tech stack
None
Domain
design
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
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
KiCadelectronics fundamentalsreading datasheets
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Review the EG25 GL datasheet to understand pinout and required external components. Create a new schematic page in KiCad for the GSM/GPS section. Ensure proper power supply, SIM card interface, and antenna connections. Use existing KiCad footprints if available, or create new ones.