Recent content by DaleH

Brian and Ralph - apologies for the delayed update regarding your suggestions. Been a little busy on this end, but finally had the opportunity to swap out Q1 and, as expected, that solved the problem! Fan turns on and output varies as it should. Thanks so much for all the great advice and the...

Thanks for the information Ralph! That pretty much sews it up I think. The leg from Q1 to Q3 never varies from 12v whether the fan is full on, full off or anywhere in between. Apparently I’ve damaged Q1 somehow as it appears the solder connections look good and I don’t see any broken leads...

Hi Brian, I’ve confirmed the blower output is 100% in the webui and have experimented by changing the set point to also force it to 0%. When the fan is at 100% the 0+ pin goes to 3.3v as expected and when the fan drops to to 0% the 0+ pin of Q1 drops to 2.9mV. The closet pin of Q1 does vary...

Hi Brian, I finally got around to checking the follow circuit as you described above. I have continuity in all the sections I would expect to have continuity, but when I power the HM (without the button board), the expected 10.5V out of Q1 BS170 is actually showing 12V. That transfers up to...

Thank You Brian! It may be a week or more before I get to it, but I'll pull out the multi-meter and start prodding around as soon as I get a chance.

Thanks Bryan and Ralph for the comments! I AM excited to have this working and have been having fun monitoring the temp out of our upstairs furnace vent with the pit probe since I can’t get it hooked up to the smoker just yet. I did run into an issue with my last step that I didn’t expect...

Success! Thanks again Ralph for the suggestion! Had you not suggested I take a look at the regulator and transistors, I never would have noticed I had the ATMega socket soldered in the wrong orientation. Fortunately just flipping the ATMega in the socket was all that was needed.

Thanks for the suggestion Ralph! I saw that note in the build instructions and took great pains to make sure I didn’t mix them up. I did just double-check them to be sure and fortunately/unfortunately I have them in the right locations. HOWEVER, as I was inspecting the board I noticed that...

Hi All, I recently completed a HM 4.3 kit build that my wife got me for Christmas 2017 (an indication of my available free time) :p Unfortunately I'm unable to get the HM to do pretty much anything at all. I've combed through the forums at length and have tried a few things, but without any...