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Which microcontroller to create my own lorawan node?

imslora

Hi all I am quite new in this sphere - I have a good electronics background and I specialize in IoT Integration.

I am stumped on which microcontroller to choose to create a lorawan node? Any good pointers?

I am asking because lorawan to enable otaa which seems to be the way forward has some memory issues with the conventional mcu's

thanks and sorry for the noob question

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    Hi, what specific memory issues are you referring to? I can't tell if you're looking for a microcontroller with a lot of memory, or for a microcontroller with secure memory.

    I don't know if you're looking for something for hobby use (in which case just use a powerful microcontroller since the cost of a single microcontroller is in the noise compared to the cost of the time you will invest with it) or for production use (in which case you need security features) or for long battery life (a low-power microcontroller with good sleep options) or for sensor processing (a microcontroller with a lot of RAM and performance for AI/ML).


    Have you looked at existing LoRaWAN development boards and LoRaWAN modules, and LoRaWAN code libraries, and seen what microcontrollers they use? There may be some that you favour, e.g. if you have experience with a particular ecosystem you may prefer that. If you search for lorawan on this site, you'll see some recent blog posts by users of LoRaWAN-capable hardware and can see what specific microcontroller was used.

  • 0

    I assume the LoRa MCU modules from Arduino and Adafruit can handle TTN OTAActivation.

    Or an ESP32 LoRa module like  LILYGO® TTGO LoRa32 V2.1 which has something like 512 KB RAM.

  • 0

    Thanks for your replies

    thanks for your feedback I refer to the onboard memory as the library needed to attain ttn v3 otaa exceeds or will occupy the majority of the memory leaving little to none space for your own code with no headroom. Yes I have been looking at other project my project was prototyped using arduino mkr wan - so i have a working prototype but now I am in the stage to try and minimise the circuit footprint by redesigning a minimalist circuit. I asked this question so I can get more ideas what mcu's one could use.

    thanks, yes I understand and did that - admittedly i didnt look at TTGO and now I am drooling a bit because looks like has enough ram to accomplish OTAA

    Thanks again - seems like quite an active community and helpful