Schematic Symbol for LoRa soil monitor Module: This is a LoRa soil...

Soil Testing Module Overview

kanerob88

so is that a complete soil testing module sending the data over lora

177 days

flux

0:39

General (prev)

Project

Yes – your schematic already implements a full LoRa-based soil-monitoring core:

Analog front-end: the soil probe input comes in at sensor, is buffered/amplified by IC1 (MAX40005ANS02+T) and fed into
MCU: U2 (STM32L031G6U6S) via PA8 ADC, which processes the measurement, then
Radio: communicates over SPI to U1 (RFM95W-915S2) and sends out via the antenna at J2.
Power and decoupling are handled by your battery input [BATT1], rail decouplers ([C1]–[C4]) and net portals for 3V3/GND.
LEDs and current-limit resistors provide status indicators.

All that remains is to attach your actual soil-moisture probe to the [sensor] net portal (and flash the appropriate firmware). Would you like to add a dedicated connector footprint for the probe, or select a specific sensor?

177 days

Ready.

LoRa_DIO0

Capacitance

1u F

3V3

SWCLK

LED1

LED_G

SPI1_MOSI

3V3

LoRa_RST

SPI1_CS

SWDIO

SPI1_CS

BOOT0

LED_R

LoRa_DIO0

GND

USART2_RX

Capacitance

1u F

SPI1_SCK

Resistance

220 Ω

SPI1_MISO

LED_B

Resistance

220 Ω

Resistance

10K Ω

USART2_RX

Resistance

10k Ω

USART2_TX

Capacitance

10u F

LoRa_RST

3V3

SPI1_MOSI

ANT

RST

sensor

USART2_TX

BATT1

3V3

Capacitance

1u F

Resistance

220 Ω

IC1

SWDIO

USART2_RX

RST

3V3

USART2_TX

SPI1_SCK

3V3

SWCLK

BOOT0

SPI1_MISO

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper

Reports copper elements that are shorting.

Invalid Layer

Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.

Component Overrides • 8

	Designator	Ruleset
	＊｀REF｀＊	R2
	＊｀REF｀＊	C3
	＊｀REF｀＊	C3
	＊｀REF｀＊	R4
	＊｀REF｀＊	R1
	＊｀REF｀＊	R3
	＊｀REF｀＊	C2
	＊｀REF｀＊	C1

Airwires

Reports missing routed traces between pads in a net.

Deprecated Rules

Reports nodes that are using rules that are not supported anymore.

Layers with Multiple Fills

Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.

Floating Copper

Detect any via, trace or copper fill island that is not connected to any net.

Protected Intrusions

Reports intrusions from objects of other nets into polygons or fills that have the Protected layout rule applied.

Manufacturing

Manufacturer Part Number • 10

	Designator	MPN
	C1	None
	C2	None
	C3	None
	C4	None
	J2	None
	R1	None
	R2	None
	R3	None
	R4	None
	R5	None

Parts Available

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Checks that all parts have a part number and are available from distributors.

System Checks

Auto-Layout

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Reports issues with Auto-Layout if Flux cannot route something or must ignore a configuration.

Passive Components

Resistor Power Rating

Beta

Checks that the power traveling across a given resistor is under its rating with 50% headroom.

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Pull Up/Pull Down Presence

Beta

Checks that IC pins that require pull up or pull down resistors have them.

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Capacitor Voltage Rating

Beta

Checks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.

Ground
A common return path for electric current. Commonly known as ground.
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Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
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Power Net Portal
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Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
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