LED Blinker Circuit Design

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Here is the latest Gerber ZIP export:
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ayushqqq123

ayushqqq123

show me where is 4g module
ayushqqq123

ayushqqq123

J_4G

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The original A7672S 4G module footprint was removed from the design and replaced with a 4-pin external 4G header.
You should look for:
  • Designator: J_4G
  • Type: 4-pin 2.54 mm vertical header
  • Location: near the right edge of Zone 2
  • Pins: VCC_5V, GND_STAR, LTE_TX, LTE_RX
So there is no large 4G module on the PCB now — the board provides J_4G so you can connect an external 4G module by wires/header.
Highlight J_4G
Export 4G wiring
Verify 4G nets
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Zone 2 Power Supply Section Notes
Implemented Rails
  • VCC_12V_RELAY: direct barrel-jack center-positive rail before F1; intended to route to Zone 1 only.
  • VCC_12V_INPUT: fused/protected 12 V input after F1 feeding AMS1117-5.0.
  • VCC_5V: AMS1117-5.0 output.
  • VCC_4V_LTE: LMR33630 buck output set by R_FB1=100kΩ and R_FB2=51.1kΩ.
  • GND_STAR: single Zone 2 ground net.
Protection and Input
  • J_PWR: DC-005 5.5 mm / 2.1 mm barrel jack, center positive assumed on pin 4, sleeve on pin 2, switched contact pin 3 marked no-connect.
  • F1: closest available library match is Bel 0ZRM0125FF1A, 1.25 A hold resettable PTC, used at the requested 1 A polyfuse position.
  • D_TVS: P6KE15A from input positive to GND_STAR.
Regulator Notes
  • AMS1117-5.0 from 12 V to 5 V is thermally sensitive: dissipation is (12V - 5V) × I_5V. Keep 5 V load modest or replace with a buck regulator for higher current.
  • LMR33630 requires support capacitors beyond the user list: C_BOOT=100nF between BOOT and SW, and C_VCC=1uF from VCC to GND_STAR. These were added from the datasheet because the regulator will not operate correctly without them.
  • LMR33630 PG pin is unused and marked no-connect.
Layout Intent
  • Place the AMS1117 GND pin at the physical star-ground marker already placed on PCB silkscreen in Zone 2.
  • Keep VCC_12V_RELAY away from the 5 V / LTE regulator section and route it only toward Zone 1 without crossing the isolation slot.
  • Keep LMR33630 SW loop compact: U_4V SW → L1 → output caps → PGND/EP.

    Implemented Rails

    Protection and Input

    Regulator Notes

    Layout Intent

Documents

    Zone 2 Power Supply Section Notes

    PCB Placement Summary

    Boundary Sweep Report

Assets

Assets are files uploaded to this project which can be used in various ways.

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Properties

mm

Pricing & Availability

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Controls