The Shield supports 1.1 and the seller was responsive I would recommend dealing with the seller thank you

These are fun! They're like a very bright flashlight with adjustable colors, and fairly easy to assemble.

There isn't too much documentation beyond which parts are included, but you don't really need any - the 6-pin chips have the large grounding tab reflected on the board to help you orient them, and the big LED has '+' and '-' etched onto the package.

And it's nice that while the LED uses 12V DC power, you can drive the 'Red', 'Green', and 'Blue' signals with low-voltage PWM signals. I've used 3.3V successfully, and I think the datasheet says you can go as low as 2.5V for the logic levels.

One note: it's nice that there are a couple of different options for the 5-pin connector, but if you use the push-in crimp connector, you might want to place a layer of tape or insulation over the protruding metal pins on the plug; depending on which way you solder the header on the board, they might short against the big heatsink.

This is a nice shield for Raspberry Pi prototyping and projects, It's well thought out and designed, and easy to assemble and use.

Nice professional boards. Took a couple of weeks to reach my location (Nebraska, USA). Parts are shipped loose so you will have to solder everything on yourself.

Not happy!
Was all ready to set up and thought I'd test the board for the GRBL 0.9 change. It's the old GRBL 0.8 which does not support spindle speed.
Don't buy