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Ha, looks like I've found a third option. Think I missed the obvious, but once I added an external supply to the dimmer input terminal (12v dc for my pump), all is working. ps. I wasn't aware of the countdown option on the mash stages (down arrow). That will suffice for me. pps. I...

OK, I've moved the STC output spare pad to centre pin of the dimmer, pump is still not working (0V at pump o/p on both pot. extremes) Two thoughts: I've blown the dimmer? I'll check tonight by wiring the input to a 12v source & the pump across the o/p, see if it still works the stc...

Wired the pump and the dimmer as shown but getting 0v across the pump when it should be on. Perhaps I've got the wiring wrong? ps I've talked out the dimmer case so that it fits in my enclosure

Hi, Of course, taming the boil over was successful, I can see with your explanation that the behaviour at the hot break forms works well. I had chance to try a pull up resister after work today, and yes, as you suggested I can now see the signal change.. thanks. Will try to connect the...

Hi, had a brewday with the single vessel release on my new diy single vessel recirc setup. I can report only great things with terrific results: strike temp reached with constant power OK mashing steps (simple infusion) timing OK temperature maintained during mash OK with thermostatic...

Yes, my confusion from an earlier post in this thread, should have read your notes first. Thanks for the info, will get an enclosure for this and test it out hopefully v. soon.

Hi, Cant quite see where other connecteor goes for the pump. I've arrowed the pad to left of J2 (from my uploaded pic) but cant see R2? cheers

Hi Mats, thanks for this firmware, look forward to trying it out in the next few days. I'll test it on a regular two stage mash.

Just to let you know that I flashed this one successfully this evening. :mug: ; Here's a pic that was asked for

Hi, I have v A400_P version 1.1. It has the five programming pads, brown transformer, and two of the green screw terminals very close together. Looks very much like photo's of version 1.0 I have seen posted here. Anyone had success flashing this one? ps I bought it here...

thanks, I'm in the uk so will look for a suplier here

Great hack alpha, would love to try out your firmware on my next brew, if only I could get hold of the right stc-1000 :confused: