Clarification on P-NUCLEO-LRWAN1 Obsolescence and Component Status

[Akshay2]

I noticed that the STM product P-NUCLEO-LRWAN1 is marked as obsolete. This kit includes the Nucleo-L073RZ and the SX1272MB2xAS LoRa® extension board. However, when searching for these components individually, both are still listed as active.

This situation raises a few questions:

1. Does the obsolescence of the P-NUCLEO-LRWAN1 mean only the bundle is discontinued, while the individual components are still in production?
2. Are there any official alternatives or updated bundles recommended for prototyping LoRa® solutions using STM32?
3. If I purchase the Nucleo-L073RZ and SX1272MB2xAS separately, will the same software, documentation, and support as provided with the original kit still be available?

I’d appreciate any guidance or clarification from the community or those familiar with this kit.

Thank you!

[Andrew Neil]

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@Akshay2 wrote:

Are there any official alternatives or updated bundles recommended for prototyping LoRa® solutions using STM32?

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B-L072Z-LRWAN1 is still 'Active':

https://www.st.com/en/evaluation-tools/b-l072z-lrwan1.html

and there's the NUCLEO-WL55JC:

https://www.st.com/en/evaluation-tools/nucleo-wl55jc.html

[Tesla DeLorean]

The same software compiles and works, not clear what additional "support" you'd need. Most of the original material used the Semtech firmware as a basis, and could be ported to a number of STM32 platforms, where low-power wasn't the only driver. Also other ports on Arduino, and integration with CubeMX as I recall

For quite a while is was more cost effect to find the components individually, or use the Murata based part or DISCO boards using the SX1272 and a 192KB STM32L072. The Murata module was also available on things like the Arduino MKR WAN 1300, also a whole host of REYAX and HELTEC modules too.

The world moves on, and now the functionality has been integrated on the STM32WL models, basically the equivalent to the SX126x

[Tesla DeLorean]

The B-L072Z-LRWAN1 was arguably the better integrated solution and allowed for prototyping. Could be modified, I regularly removed the battery pack, replaced with a rechargable unit, and screens, etc.

If it's too big or costly, you can find Arduino MKR WAN 1300 board for around $20

HELTEC has units with STM32L432 or L152

The LRWAN software library can be ported the F4, F7, etc

My assumption is the original kit had served it's purpose, and ST / SEMTECH didn't want to create themselves a whole bunch of manufacturing and inventory grief of having the separate boards when the integrated solution was available.

The SX1272MB2DAS is still available, but it's hard to determine the long-term availability

Lots of alternate modules which could be readily reprogrammed and used as development proxies as you design your own.

[Tesla DeLorean]

P-NUCLEO-LRWAN1, available from Mouser for $71.62

Or

SX1272MB2DAS $31.68

NUCLEO-L073RZ $13.81

$45.49

[Andrew Neil]

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@Tesla DeLorean wrote:

P-NUCLEO-LRWAN1, available from Mouser for $71.62

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Indeed: