Trouble building my first Extension. Why is device not showing up as Arduino?


I am trying to build my first extension. A very simple command block that gets {on,off} and the LED Pin# as the parameter and then turns the led on or off.

My question is when I drag the “meht” file in mBlock - why is the device becoming “led”. I want the device to be Arduino only and a new device “led” should NOT get added when I am adding the extension.

Below is also my extension builder screen setting.


To make an extension, go to

Click “My Extension” NOT “My Device”:
Make your extension:

It appears that you have created a device, not an extension.


Thank you so much, silly me.

Thank you for answering all the questions you do in these forums.


No problem!