Electronics > Beginners
Unsure about which Arduino to start out with for my project!
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TK:
Just one important comment, most of the STM32F103 boards out there comes with the native bootloader.  You need to burn a new bootloader t(I think it is the MAPLE MINI bootloader) o be able to use it with the Arduino IDE
C:

With STM32 you can use a
"st link v2"  for all

You can get a cheap clone or use one built in to most discover boards from ST

 https://www.youtube.com/results?search_query=arduino+st+link+v2+
james_s:
I've modified a number of the $2.50 Arduino Nano clones to be 3.3V, it was not hard to do and they work fine. Lots of other options out there but if you are starting from zero you have a long road ahead. The electronics part is pretty trivial but I'd expect it will take several months to a year to become proficient with the coding depending on how hard you work at it.
brucehoult:
An Arduino Uno or similar hasn't got anywhere near enough processing power or program space to run actual code for GSM, GPS or even Bluetooth so you'll be looking at connecting it to specialised modules that have a lot more processing power internally. Bluetooth software alone is 50 or 100 KB or more, while the Uno has only 32 KB.

And what do you want to do with all this data afterwards?

The 2 KB of RAM in a Uno doesn't go very far to accumulating data long term. It can be ok if you're immediately sending it on to somewhere else, or maybe storing to an SD card.

The Uno (or bare 328 AVR) probably has enough I/O connections to do what you want, but it will be the processing that determines if you need an ARM or RISC-V or other beefier processor with more RAM and MHz.
james_s:
"0 experience with electronics and little programming knowledge" pretty much means either stick together a number of modules that each contain a bit of their own intelligence in the case of something like BlueTooth, or a very steep learning curve to code it all from scratch using something like an ARM core. I don't want to discourage the latter approach, but I don't want to see someone get frustrated and give up when they bite off more than they can chew either. Just something to keep in mind.
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