When I first started work on ROVA Tools around about 7 years ago, RTD2120+RTD2545 based platforms comprised the majority of the hobbyist LCD controller market. I personally spent a lot of time learning about them ultimately creating a firmware editor for that platform. These days RTD2660 based platforms now dominate, with ROVAEdit largely now forgotten.
I will never create a firmware editor for the plethora of RTD2660 boards now available, because there is no point in doing so. The source code for these boards is readily available.
ROVATool however, which was created at the same time, and now supporting RTD2660 still gets around 300 downloads per month, which is a small consolation.
I always meant to write a comprehensive guide of everything I’ve learned about LCD controllers, but ultimately realised that very few would be interested in reading it, so never bothered.
The ROVAEdit readme is the closest I ever got. So here it is.