Smart Parking IoT Node Design

Thought for 4 sec

flux

Work done

Added and wired the ParkNGo schematic: U1 ESP32 DevKitC-footprint MCU, U2–U5 QMC5883L sensors, U6 RFM95W-868S2 LoRa, BATT1 3xAA holder, and C1 100uF bulk capacitor.
Implemented V_BATT, GND, VCC_3V3, shared SCL/split SDA sensor nets, and LoRa SPI/control nets; GPIO19/GPIO18 are documented as shared physical nets for SDA_SPOT_B/SPI_MISO and SDA_SPOT_C/SPI_SCK.
Marked unused QMC5883L and ESP32 DevKit pins as no-connect and verified ERC is clean for floating pins, no-connect violations, single-pin nets, and driver conflicts.
Created project documentation: Project Specification, Firmware Starter, and Validation Results.

Success criteria review

✅ Required components added and connected.
✅ Required power, I2C, LoRa SPI/control connectivity implemented.
✅ Four QMC5883L sensors are assigned Spot_A through Spot_D and documented as the vertical parking-row column.
✅ ERC passes for the checked electrical categories; only PCB airwires remain because routing has not been performed yet.

Next steps

I can proceed to PCB layout next: size the board, set the stackup, place U1 with antenna edge clearance, arrange U2–U5 in a vertical column, and place power/RF sections for routing.

Place PCB layout

ESP32 antenna edge

Sensor spacing

Run DRC review

Export assembly files

U1 GPIO18 - U4 SDA

U1 GND - C1 2

U1 GPIO19 - U3 SDA

U1 GPIO2 - U6 DIO0

U1 GPIO14 - U6 RESET

U1 GPIO21 - U2 SDA

U1 GPIO22 - U2 SCL

U1 GPIO5 - U5 SDA

U1 GPIO23 - U6 MOSI

U1 GPIO15 - U6 NSS

GND

Reviews

Generic Inductor
A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
jharwinbarrozo
16.7k
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Generic Resistor
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700.5k
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490.7k
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448.3k

Project Name

ParkNGo Hybrid Cluster Node

Description

ParkNGo low-power ESP32 LoRaWAN smart parking hybrid cluster node with four QMC5883L magnetometers

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1
Arrow	$0.03–$23.31
Digi-Key	$1.77–$19.95
LCSC	$56.68–$80.12
Mouser	$25.57–$43.82
TME	$0.00
Verical	$1.70–$6.09

Controls

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josephrejo / ParkNGo Hybrid Cluster Node

Schematic