No documentation
For ULTRA, a successor of SDuino
I was hoping for an Arduino that I could program to use its display.
No documentation. I tried various Arduino configurations with no luck. Tried to reach vendor. No luck yet.
Response from microwavemont | Nov. 11, 2016
Hello and thank you for precise comment.
I've confirmed your question at relevant hackaday project and answered it there. I would like to repeat the answer as, for Ultima programming at Arduino IDE, we need Atmega1284P support by "board manager" on IDE. Exact procedure to add Atmega1284P is described at https://hackaday.io/project/13088-minimal-and-self-contained-atmega1284p-mod-chip .