Pet Tracker Design Proposal

flux

I haven’t made any project changes yet — the schematic is still empty (0 components, 0 nets). I’m currently blocked from executing design work in Flux because the session has no remaining credits.
For your pet GPS/SIM tracker, the remaining work is:
  1. Define requirements
    • Pet size/weight limit for the device
    • Target country/cellular network
    • GPS update rate: real-time, every few minutes, or on demand
    • Battery size/weight acceptable for dog/cat collar
    • Waterproofing level
  2. Select architecture
    • LTE-M/NB-IoT or 4G cellular module with SIM/eSIM
    • GNSS/GPS module or cellular module with integrated GNSS
    • Microcontroller for control/app commands
    • Audio codec/amplifier, microphone, and speaker
    • Li-ion/LiPo battery charger and protection
    • Power management sized for one-week battery life
  3. Important feasibility note
    • “Exact location” is not always possible indoors; GPS works best outdoors.
    • One-week battery life with GPS + SIM + two-way audio is possible only if the device sleeps most of the time. Continuous live tracking and voice calls will drain the battery much faster.
    • For a cat-sized collar, battery size is the hardest constraint.
  4. Next design steps when credits are available
    • Create project specification and power budget
    • Choose cellular/GPS/audio/power ICs from datasheets
    • Build the full schematic with SIM, antenna, GPS, microphone, speaker, charger, battery, and programming connector
    • Run electrical review
    • Create PCB layout with antenna keepouts
    • Add firmware/app interface notes for commands like “feed time” sound playback
Recommended starting architecture: LTE-M/NB-IoT cellular module with GNSS, low-power MCU, MEMS microphone, small speaker amplifier, LiPo battery, USB-C charging, and a mobile app backend for location + voice/audio commands.
Power budget
Dog collar LTE-M
Find cellular module
Save requirements
Battery estimate
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