Quote Originally Posted by Doddy View Post
Hmmm, 5 seconds on eBay, https://www.ebay.co.uk/itm/255651412...cAAOSwNchaPMlN - replacement for your TB6560. Or https://www.ebay.co.uk/itm/224967932...Bk9SR7K7-_77YA if you wanted the 6600 and to wait for China.

I could witter on about individual stepper drivers and separate BoB, but that's not your question.
Thanks Doddy but I am really looking for one of these:
Click image for larger version. 

Name:	Screenshot from 2022-10-16 15-47-00.png 
Views:	646 
Size:	916.3 KB 
ID:	31316
as it would be (almost) a drop in replacement for the old TB6560 board but with better reliability. I found a couple of sellers on Aliexpress for that model at about £50 but both have nil stock.

I agree that separate drivers and a breakout board would be better, and easier to fix if one channel dies but it would mean making a new case for the electronics and would make a bigger dent in my pension income!

Russell