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I want to write code for my Arduino in Lua. Where I can find the necessary (pins) I/O lib and examples for Arduino IDE?
UPD: I've got arduino mega with many memory.

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    You want to code in Lua? And have that code run on the Arduino? Which Arduino do you have in mind? Commented Mar 20, 2016 at 19:52
  • @NickGammon , that's true, I want to write program for arduino uno. Commented Mar 20, 2016 at 20:18
  • @NickGammon: ok, now I've got an arduino mega. Commented Aug 17, 2016 at 16:40
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    It looks like the ESP8266 runs Lua, but I haven't seen it running on an Arduino. Commented Aug 17, 2016 at 21:57

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Lua is an interpreted language. That is, the compile phase turns Lua source code into intermediate "pseudo-code" which the Lua interpreter then runs. It doesn't compile into machine code, and therefore there is nothing that could be uploaded to your Uno as a "hex" file.

In any case, with only 2 KB of RAM, it wouldn't be very practical to attempt to run Lua on a Uno. I like Lua personally, but running it on the (AVR) Arduinos just isn't practical.

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  • Lua is a language (a spec of syntax and semantics). Its most widespread implementation is an interpreter, but there is nothing in the Lua language that prevents one from writing a compiler that emits Arduino code (or any other code). I find it actually unexpected that no one has made it yet. Commented Mar 15, 2018 at 12:49
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AFAIK, Arduino IDE supports C++ only. You can use other languages to communicate with Arduino from your PC. Take a look at Firmata.

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  • An enterprising person might cross compile Lau to C++ ... Once upon a time our AT&T C++ compiler only emmitted C and the cc command turned that into object coed. Commented Jul 30, 2023 at 13:31

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