ANY ONE WORKING ON A DRIVER BOARD ? David
Would you tell us what specific thermal printers you've looked at, and what you've learned so far?
mg2999 on Youtube built a "driver board".
Arduino software for thermal printer
Phillip Burgess. "Mini Thermal Receipt Printer". Tutorial at Adafruit. This tutorial shows how to directly connect the "TTL RS232" data interface on this particular printer to an Arduino. Then it shows how to program the Arduino using the Adafruit-Thermal-Printer-Library at Github to get print text, on-the-fly composed barcodes, and (hard-wired, pre-composed) arbitrary bitmaps.
John Boxall. "Tutorial: Arduino and a Thermal Printer". Tutorial at tronixstuff. Also has good tips in the comments.