DIY Wireless RF 433 remote and relay board with security (rolling code and encryption)

[@ejennings98]

I like your rolling code idea. I created one which was far more complex but I think yours is much simpler to implement.

[@IonutFedaceag]

Thanks. That was the idea, to be simple and easy to implement.

[@dongdong9607]

i like your projects!

[@IonutFedaceag]

Thanks!

[@alaanoor3679]

Correct me if i'm wrong xxtea is NOT a rolling code algorithm, its an encryption , same data with same key , will give you the same encrypted data every time thus should not be used with remote controls. am i right ?

[@IonutFedaceag]

Yes you are correct, xxtea is NOT a rolling code algorithm, its an encryption ! But if you add a number, which increments in the data before the encryption with every button press and you store that number in the eeprom, you have yourself a rolling code with encryption... And with unsigned long data type you have 4,294,967,295.

[@MrBobWareham]

An awsome project very good with excellent description thank you I have joined your channel you show one button on your faceplate but 5 buttons on your PCB?

[@danielsvedan]

Could this work like a keyless repeater, securitytesting of keyless go cars?!

[@heyhey7288]

Do you sell?

[@SangSnapOn]

bro! how to generate code from Arduino (or Wemos 8266) + Transmitter for Remote learing code ( It doesn't have code)? thansk a bunch!

[@Dwi_Akza]

Mantapzz

[@IonutFedaceag]

Thanks!

[@chrisw1462]

P. I. R. It is NOT pronounced!!!!

[@IonutFedaceag]

What do you mean? PIR is NOT pronounced ...

[@chrisw1462]

@@IonutFedaceag You pronounced it as a word, and it sounded like 'per', and the first time I heard it, I had no idea what you said. Because the rest of the world pronounces it as an abbreviation - saying the letters. It's only three letters for crying out loud.

[@IonutFedaceag]

:))))))) Well, sorry for that! In our language we take abbreviation as one word... I'm not a fluent english speaker and for everyone ho doesn't understand my pronunciation, i made the notation on the video! At 0 minutes and 22 seconds in the clip, when i'm pronuce it wrong, i also writen on the image (thru a motion detector pir) so anyone can understand! =))))) What more can i do? I should take an english course for five years to be able to spread an idea? Please don't get me wrong, but i try to do my best in the time that i have and i think this idea was worth spreading even with that wrong pronunciation (and of course with the screen notation)... ;)