Arduino that is LEGO-compatible: STEMTera

[JopieK]

Maybe not a train thing at first glance but for people looking to start using LEGO + Arduino I think it will be great:

         STEMTera (Black)       

[McWaffel]

If I understood correctly, there's two Arduino boards included in this breadboard? If that's the case, this is definitely something I'm going to use in the future! :O 

[JopieK]

It seems like a breadboard indeed but has an Arduino in it. I'm not sure whether there are two Arduino's in it, probably the Atmega16U2 is for programming the main one: the ATmega328P that is the chip for typical arduino's (although the P variety is a bit more sophisticated than the one from a Arduino UNO).

It has an interesting 'LEGO compatible' bottom: 

Not sure why they reversed the studs in the middle though.

[dr_spock]

I think it would have been nice if they included holes for connecting Technic pins.  Depending on your usage, studs may not provide the necessary clutch power so that your $45 board won't go flying off.    

[Redimus]

As someone who tends to stick to British trains, this sadly is of limited use, 8 wide is too wide. Possibly worth using for trackside stuff.