Hello,

I am currently building my first polargraph, and so far so good!

I have got myself an Arduino Mega and Mk1 motor control board. I have all steppers and servo functioning correctly. I really want to try and add a SD card reader so I don't have to have my computer plugged in all the time whilst I am printing.

I found this post from Sandy mentioning that I can wire in a SD card reader to work with the Mega without the Polargraph shield.
http://www.polargraph.co.uk/2012/02/state-of-the-art-tangle/

Does anyone know if this will still work with the current firmware? If so what version of the firmware do I need to install on my Mega, the A1 version, or the Polarshield version?

Due to the lack of touchscreen, I am happy to initiate the print from the laptop, using the EXEC FROM STORE function in the controller queue tab.

I am new to this and my experience is limited, so any advice would be greatly appreciated.

Thanks 🙂