I have been meaning to add support for 1k Pt sensors. You can build a table but the resolution is going to be poor, for a given change of 1 Deg the 1k Pt’s will change only a few ohms whereas the 10k thermistors will change many hundreds of ohms. We’ll have to make some hardware changes in order to get any sort of resolution from the 1k Pt sensors. Give us about a month and I should have something to show.
Update: We’re late but getting close, should have 1k Pt option for the T3-XX series controllers in ~ 2 weeks. The main PCB will stay the same, only one small module needs to be swapped out so if you happen to have hardware on hand already we can send some modules your way.