These instructions are for the original plywood-frame Deltaprintr from the 2013 Kickstarter campaign or sold on the website before the release of the Delta Go. The Kickstarter campaign ran in 2013 with printer rewards for $500 pledges, and printers were delivered in 2015. They use a custom variant of the Azteeg X3 controller board. There was a vibrant community for a couple of years on the forums, designing mods and improvements, and sorting out each other's print issues. I've had mine working quite well for years.
This comprises several firmware-related forum posts; my original firmware HOWTO, my fix for stuttering movement, and Ian Brennan's [experimentation](http://forums.deltaprintr.com/index