Wi-Fi HaLow IoT Development Board for Sensor Telemetry

General
1

Hi,

We are currently using an ATmega328-based system to collect data from temperature, tilt, and pressure sensors. The sensor data is transmitted via RS485 to a Senquip telemetry unit for long-range wireless communication.

We are now exploring Wi-Fi HaLow as an alternative to the existing Senquip telemetry and are very interested in your Wi-Fi HaLow IoT Development Board as a potential replacement.

Our intention is to keep the existing ATmega328 sensor PCB unchanged and use the HaLow development board as a telemetry module, interfacing with our MCU via UART (or RS485 through an external transceiver if required).

Could you please advise:

  • Which Morse Micro Wi-Fi HaLow development board would be most suitable for this use case?

  • Whether the board supports UART-based data input from an external MCU

  • Any reference designs, application notes, or example firmware relevant to sensor telemetry or serial-to-HaLow communication

  • Power supply requirements and peak current considerations for field deployment

This information will help us evaluate the feasibility of integrating your solution into our system.

Thank you very much for your time and support. We look forward to your advice.

Kind regards,
An

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2

Just thinking out loud.
For development and testing..

Option 1:- Use ESP-32 (Seed Studio XIAO) to create a RS485 (Modbus) + Wifi-Halow communication extender

Option 2:- Replace the Atmel328 for a ESP32 based micro-controller + Wifi-Halow modem

Option 3:- Use a Raspberry Pi as the micro-controller.

Just some thoughts !

Faisal

3

Thank you, Faisal!

The attached is what we would like to do. Is it similar to the option 1 that you advised?

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4

Just thinking out loud here.
You have an Atmel328 micro-controller that is talking to the three sensors and allowing communication via modbus (rs485).

you could create a Modbus to (WiFi) server (consider WiFi / WiFi-halow as something interchangeable for this conversation) .. and have the WiFI Halow talking to the AP.

To a certain degree this would be like going the long way to solve the problem.
e.g if you take a ESP-32 controller, you can connect to it a WIFI-Halow modem, and use it as a modbus tcp server …
But then again this still the long way .. because, you can take an ESP-32, connect the sensors to it, connect the Wifi-halow modem to it and use the computer to read the data

I am strictly talking at a block diagram level ..
Depending on your dev skill set available to you and other requirements, you could also use a Raspberry PI, and have it talk to the sensors , and use a WiFi-Halow module to communicate back to your computer ..

Hope that makes sense ?

Faisal

5

Actually we are developing such a product, the solar node support i2c/uart/RS485, the AP has lwm2m rest api, and support libp2p for remote access. And there is no firmware development needed, you can access it completely over coding with the api https://www.linkedin.com/posts/edgez_halow-ai-iot-activity-7422403605435052034-ZV-w?utm_source=share&utm_medium=member_ios&rcm=ACoAAAyCfw0BL9IvYD61KQh6Wxn5k59zqeEPtL8

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6

I’m doing something similar and have gone down the ESP32 route per what Faisal typed. Add the ESP-NOW lib and it’ll get you 200m range from the main ESP32 node and an ESP32 sensor web. The sensors aren’t the main issue (they can be anything) as the main ESP32 node can talk back to any WiFi STA (HaLow + 2.4 or just 2.4 on its own) and pass those data back to whatever (in my case a server via the internet).