Fcobcn received some soldering iron driver V2 PCBs from Arhi. He used replacement parts for those components he couldn’t find locally.
The version 2 unfortunately only supports thermocouple type soldering pencils. Our recommendation is to use the V2 driver with ether the cheaper Solomon SR-976 pencil, or the more expensive Weller PES51.
Support for PTC type pencils was added to the version 3 which is currently under testing.
Via the forum.