I’ll inspect the current PCB state, check whether placement and/or routing are incomplete, then run the needed auto-layout steps and apply them. I’ll also keep the pet-use constraint in mind: sensors must be positioned so they can realistically contact or sense a cat/dog on a collar.
Implemented auto-layout and auto-routing on the PCB. I also corrected the MAX30102 heart sensor to the pet-facing bottom side so it has a realistic chance of reading on a dog/cat.
Open items:
9 airwires remain, mainly USB D+/D− plus a few local regulator/ground ties that the auto-router skipped.
ESP32 antenna overhang warning is intentional for wireless range.
MAX30102 can work electrically, but pet heart sensing through fur is not guaranteed; it needs skin contact, pressure, and likely an optical window or shaved/thin-fur contact area.
Suggested next steps:
Manually route USB D+/D− with controlled-impedance constraints.
Clean up the remaining regulator/ground airwires.
Add mechanical notes for the collar enclosure: heart-sensor window, sensor pressure, GPS/BLE antenna keepouts, and microphone opening.
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
General Purpose Thick Film Standard Power
and High-Power Chip Resistor
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film
Features:
- RMCF – standard power ratings
- RMCP – high power ratings
- Nickel barrier terminations standard
- Power derating from 100% at 70ºC to zero at +155ºC
- RoHS compliant, REACH compliant, and halogen free
- AEC-Q200 compliant
Battery-powered smart pet collar PCB with ESP32-class wireless MCU, GPS, heart sensing, temperature, motion sensing, microphone, USB programming, and mobile-app data connectivity.
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor
Qty 1
Arrow
$16.94–$26.69
Digi-Key
$8.75
HQonline
$9.21
LCSC
$38.33–$38.50
Mouser
$51.59
TME
$20.08
Verical
$21.89–$33.74
Controls
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