If you follow me on Twitter, you might have seen this 1 year ago:
Yes! I successfully repaired our ancient Gameboy! pic.twitter.com/Z7wRVrEQBS
— Elias Zacarias (@battlecoder) September 19, 2014
Followed by:
Working on a graphics converter to make GBC assets with modern tools! #gamedev #indiedev (CC @GiantEnemyLabs) pic.twitter.com/UUe1Ih0O21
— Elias Zacarias (@battlecoder) August 3, 2014
Although I think I never ever posted anything after that, I was definitely working on such a tool, focusing particularly on Gameboy Color development (and as you can see I got it working).