I'm looking to build a arduino-based version of this laser scanner.http://www.lasercommunity.com/lc_view_project.php?aid=25
I found some nice galvo scanners at ebay, but I'm unsure how to create the analog control signal. Using the internal analogWrite only gives me 256 different values, which isn't really as good as I was hoping...
The potentiometer-based approach in the link seems a bit limited.
Is there any way to output analog signals with greater resolution than 8 bits without adding more hardware?