Schematic Symbol for RFM98W-433S2: Low power long range...

Resetting RFM98W Project

dan98011

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3 days

flux

1:09

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Preparing for the restart.

I’ve prepared a plan to start over and rebuild this RFM98W-433S2 project cleanly from scratch.

We’ll reset the current schematic/layout, then recreate the module symbol and all pins, add labeled ports, and run ERC/DRC.
Metadata (MPN, datasheet URL, description) will be preserved.

Before we begin:

Do you want me to reset this project, or create a new clean copy?
Keep the existing project description as-is?
Any specific interface ports you want added beyond SPI, DIO0–DIO5, RESET, ANT, 3.3V, and GND?

Click Start on the plan bar when ready.

Reset this project

New clean copy

Add a header port

Only DIO0/DIO1

Antenna connector choice

3 days

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Show Plan

https://www.rcscomponents.kiev.ua/modules/Asers\_Shop/images/productimages/rfm98...

vasyl

The RFM95/96/97/98(W) transceivers feature the LoRaTM long range modem that provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption. Using Hope RF’s patented LoRaTM modulation technique RFM95/96/97/98(W) can achieve a sensitivity of over - 148dBm using a low cost crystal and bill of materials. The high sensitivity combined with the integrated +20 dBm power amplifier yields industry leading link budget making it optimal for any application requiring range or robustness. LoRaTM also provides significant advantages in both blocking and selectivity over conventional modulation techniques, solving the traditional design compromise between range, interference immunity and energy consumption. These devices also support high performance (G)FSK modes for systems including WMBus, IEEE802.15.4g. The RFM95/96/97/98(W) deliver exceptional phase noise, selectivity, receiver linearity and IIP3 for significantly lower current consumption than competing devices.

vasyl

Image

https://www.rcscomponents.kiev.ua/modules/Asers_Shop/images/productimages/rfm98w-433s2%20-images.jpg

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explain this project.

swarnim-sharma

@copilot explain this project.

copilot

This project involves designing a circuit with the RFM98W-433S2, a low-power, long-range transceiver module. The module operates in the 433 MHz frequency band and supports a range of bandwidths $7.8$ kHz to $500$ kHz and spreading factors $SF6$ to $SF12$, making it suitable for various LoRa applications. Its sensitivity ranges from -$111$ to -$148$ dBm, indicating its ability to detect weak signals, which is crucial for long-range communication. The module interfaces with microcontrollers or other systems through SPI and parallel connections and comes in both SMD-16 and DIP-16 packages, making it versatile for different types of PCB layouts.

Here are the key components and properties mentioned for your project:

RFM98W-433S2 Transceiver Module: The core component for the RF (Radio Frequency) and LoRa (Long Range) wireless communication capabilities.
Pins and their Designators:
- GND (Ground): Pins 1, 8, 10. The common reference point for the electrical current in the circuit.
- MISO (Master In Slave Out): Pin 3, 2. Used for SPI (Serial Peripheral Interface) communication, carrying data from the module to the microcontroller.
- NSS (Chip Select/Slave Select): Pin 5. Enables and disables the device on the SPI bus.
- 3.3V: Pin 13. Power supply pin for the module.
- DIO0 to DIO5 (Digital Input/Output): Pins 14, 11, 16, 7, 15, 12. General purpose I/O pins used for various functions like interrupt signals.
- ANT (Antenna): Pin 9. Connects to the antenna for RF transmission and reception.
- RESET: Pin 6. Used to reset the module.
- SCK (Serial Clock): Pin 4. Provides timing for SPI communication.
Additional Properties:
- The project is licensed under the Creative Commons Attribution 4.0 International License.
- Component designators follow a specific prefix "U" for identifying parts.
- The manufacturer for the module is Hoperf Electronics.

No electrical connections have been defined in the project yet, so the next step would be to layout these components on a PCB and establish the necessary connections for power, ground, SPI communication (MISO, SCK, NSS), configuring the DIO pins according to specific needs, and connecting the antenna.

This setup could potentially be used for a wide variety of applications requiring remote communication over long distances, such as environmental monitoring, home automation, and IoT (Internet of Things) deployments.

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GND

MISO

NSS

3.3V

DIO0

DIO3

DIO2

MISO

GND

DIO5

ANT

GND

RESET

DIO1

DIO4

SCK

Reviews

Electrical Rule Checks

Duplicate Designators • 2

	Components
	GND, GND, GND
	MISO, MISO

No-Connect Violation

Reports no-connect pins that are connected.

Missing Power

Reports power input pins that are not connected to a power source.

Single Pin Nets

Reports nets that have only one pin connected.

Missing Designator

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Design Rule Checks

Overlapping Copper

Reports copper elements that are shorting.

Invalid Layer

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Component Overrides

Reports components that have been modified using the "!important" flag.

Airwires

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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.

Missing Footprints

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Manufacturing

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System Checks

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Passive Components

Resistor Power Rating

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Pull Up/Pull Down Presence

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

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Capacitor Voltage Rating

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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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