LED Blinker Circuit Design

flux

Updated exports are ready:
A

ayushqqq123

give me gerber file

flux

Here is the latest Gerber ZIP export:
Download Gerber ZIP
A

ayushqqq123

show me where is 4g module
A

ayushqqq123

J_4G

flux

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
Add silkscreen labels
Run final review
Sign up to send

Files

Schematic

Layout

Preview

PCB Placement Summary
Board coordinate convention in this summary: user board coordinates are measured from the top-left of the 150 mm × 100 mm board: x increases left-to-right, y increases top-to-bottom. Flux internal coordinates are board-center origin: x = user_x − 75, y = 50 − user_y.
Zone 1 — Switching

Table

ComponentRequested user coordinateApplied Flux coordinateNotes
K1 SRD-12VDC relayx=25, y=50x=-50, y=0Center of Zone 1
U_OPTO1 PC817x=45, y=35x=-30, y=15Near slot / between relay and slot
Q1 BC547x=50, y=45x=-25, y=5Close to PC817
D2 1N4007x=25, y=30x=-50, y=20Near relay coil
R9 1kx=52, y=30x=-23, y=20Near PC817 input
R10 4.7kx=48, y=55x=-27, y=-5Near opto/transistor area
R11 10kx=50, y=55x=-25, y=-5Near opto/transistor area
J1 12V RELAY DRIVEx=10, y=15x=-65, y=35Left/top board edge
J2 STARTER COIL COMMANDx=10, y=80x=-65, y=-30Left/bottom board edge
Zone 2 — Power Cluster

Table

ComponentRequested/user intentApplied Flux coordinateNotes
J_PWRx=70, y=5x=-5, y=45Top edge
F1x=80, y=18x=5, y=32Near input
D_TVSx=85, y=18x=10, y=32Near input protection
U_5V AMS1117-5Vx=90, y=30x=15, y=20Power cluster
C_RESx=80, y=35x=5, y=15Reservoir cap
C1within 3 mm of U_5Vx=12, y=22AMS1117 input/output bypass cluster
C2within 3 mm of U_5Vx=18, y=17AMS1117 output cap
C3within 3 mm of U_5Vx=18, y=23AMS1117 output bypass
U_3V3near 5V regulatorx=20, y=8Added 3.3V regulator near logic power
C18near U_3V3x=16, y=63.3V regulator cap
C19near U_3V3x=24, y=63.3V regulator cap
U_4V LMR33630x=105, y=20x=30, y=304V LTE regulator
L1x=115, y=20x=40, y=30Near LMR SW node
C4within 3 mm of U_4Vx=27, y=35LMR input cap
C5within 3 mm of U_4V/output pathx=35, y=25LMR output cap
C6within 3 mm of U_4Vx=27, y=25LMR output bypass
C_BOOTnear U_4Vx=33, y=34Bootstrap cap
C_VCCnear U_4Vx=33, y=26VCC bypass
R_FB1near U_4V FBx=38, y=24Feedback divider
R_FB2near U_4V FBx=42, y=24Feedback divider
Zone 2 — MCU Cluster

Table

ComponentRequested/user intentApplied Flux coordinateNotes
U_MCU STM32F103C8T6x=105, y=55x=30, y=-5Center of logic zone
Y1 crystalwithin 5 mm of STM32 OSC pinsx=25, y=-8Near MCU
C7within 2 mm of VCC pinx=25, y=0MCU decoupling
C8within 2 mm of VCC pinx=35, y=0MCU decoupling
C9within 2 mm of VCC pinx=25, y=-10MCU decoupling
C10within 2 mm of VCC/VBAT pinx=35, y=-10MCU decoupling
C11within 2 mm of VDDAx=31, y=-13VDDA cap
C12within 2 mm of VDDAx=34, y=-13VDDA cap
C13at crystalx=22, y=-10Crystal load cap
C14at crystalx=22, y=-6Crystal load cap
R1near NRSTx=22, y=-2Reset pullup
C_RSTnear NRSTx=22, y=2Reset cap
TP_RSTnear NRSTx=18, y=-2Reset test point
R2near BOOT0x=38, y=-15BOOT0 pulldown
J_SWDx=130, y=90x=55, y=-40Bottom/right accessible
J_DEBUGx=145, y=50x=70, y=0Right edge accessible
Zone 2 — 4G Cluster

Table

ComponentRequested user coordinateApplied Flux coordinateNotes
J_A7672Sx=125, y=40requested x=50,y=10; clamped to x=24.07,y=10Large 2×20 header was clamped by board bounds to keep footprint on board
J_SIMx=140, y=70requested x=65,y=-20; clamped to x=51.09,y=-20Large SIM holder clamped by board bounds
J_ANT1x=148, y=10requested x=73,y=40; clamped to x=72.52,y=40Top-right antenna connector at board edge
C15within 3 mm of module VCC pinsx=42, y=12LTE bulk cap
C16within 3 mm of module VCC pinsx=42, y=8LTE bypass cap
R3near LTE UARTx=39, y=2Series resistor
R4near LTE UARTx=39, y=-2Series resistor
R5near PWRKEYx=43, y=0Series resistor
R6near RESETx=43, y=-4Series resistor
R7near STATUSx=48, y=-2STATUS resistor
R8near D1x=52, y=-5LED resistor
D1near STATUS LED pathx=56, y=-5Green status LED
C17near PWRKEYx=45, y=3PWRKEY debounce cap
Zone 2 — Sensor Cluster

Table

ComponentRequested/user intentApplied Flux coordinateNotes
U_ACS712x=80, y=75x=5, y=-25Bottom sensor/current cluster
J5x=70, y=85x=-5, y=-35Bottom edge current terminal
J3x=100, y=95requested x=25,y=-45; clamped to x=25,y=-41.15Bottom edge; clamped to keep terminal on-board
J4x=115, y=95requested x=40,y=-45; clamped to x=40,y=-41.15Bottom edge; clamped to keep terminal on-board
J_OLEDx=130, y=75x=55, y=-25Bottom/right sensor header
U_DS18B20near J3x=20, y=-35Sensor interface/reference part
C22near DS18B20x=22, y=-38DS18B20 decoupling
U_DHT22near J4x=36, y=-35Sensor interface/reference part
C23near DHT22x=38, y=-38DHT22 decoupling
C20near ACS712 VOUTx=10, y=-22VOUT filter cap
C21near ACS712 FILTERx=10, y=-28FILTER cap
R12near DS18B20 datax=25, y=-381-Wire pullup
R13near DHT22 datax=40, y=-38DHT22 pullup
R14near OLED/I2Cx=50, y=-18SCL pullup
R15near OLED/I2Cx=60, y=-18SDA pullup
Verification Notes
  • Board is confirmed 150 mm × 100 mm, 2-layer.
  • All listed physical components are on the top layer.
  • The placement tool clamped large edge components to keep their footprints inside the board: J_A7672S, J_SIM, J_ANT1, J3, and J4.
  • Zone 1 components are all left of the isolation slot area.
  • Zone 2 components are all right of the isolation slot area.
  • A 15 mm × 15 mm antenna keepout at the top-right corner remains a routing/fill rule item to enforce before copper pours/routing if not already represented by board keepout geometry.
  • DRC airwire errors are expected because routing has not been performed yet; this step was placement only.

  • Zone 1 — Switching

  • Zone 2 — Power Cluster

  • Zone 2 — MCU Cluster

  • Zone 2 — 4G Cluster

  • Zone 2 — Sensor Cluster

  • Verification Notes