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Well, me again. Had a little stint of no BBQ/heatermeter... long story.. rough times on the homefront.. anyways, back in the game. Have a nice brisket in there right now, started out great, but, woke up to this. Getting big swings in temp. Current settings B = 0 P = 4 I = 0.005 D = 5 On a...

Thanks Rob. I like your line of thinking.. the last cook, my servo settings also ended up similar. My ball valve settings pre-pid were also in the neighborhood of what you have. Luckily with UDS, they are so similar, so this information is very useful to the whole community - thank you...

Hi Rob, Interesting on the servo opening to match air intake on the UDS. I'm trying that now on a cook and will share my experience tomorrow. I've been having issues with PID tuning, I'm spoiled though - my old PID was self learning and had a different blower (~15CFM). I'm on the stock HM one...

Very close right now... I think. UDS, stock HM blower, 4.2.4, B = 0 P = 4 I = .005 D = 5 Fan max 75% Testing this right now. According to the PID tuning thread, my I is out of whack. Any suggestions?

Bryan, Really sorry for your loss. Don't even worry about HM, do what you need to do in your personal life. My condolences to you, family, and friends' family.

For the life of me, I'm going to get this damn tuning correct today... UDS Stock HM Fan Rotodamper Will let you know how I make out..

Bad word, Valid.. I meant, default PID values :)

Thanks, John. Trying that now with what I think are the stock settings.. b:4 p:3 i:.005 d:5

These still valid on 4.2.4??? THanks,

I was going to say SSR, too. One of my old PID setups that I originally built for smoker (via 120v fan), sous vide, or homebrewing... if it helps -> http://www.ice8420.com/blog/2012/01/diy-pid-control-for-bbq-sous-vide-mash-tun-whatever/

Just saw this and also the other UDS PID thread... I am kicking myself as I had some good settings on my 4.0 and I can't figure out where I put them. Now on a 4.2.4 w/ Thermocouple and rotodamper, and the stock HM fan, trying to do some tuning. Anyone else on the same platform with a UDS...

When I rechecked all of the SMD components the other day, the only one I didn't like was the one resistor - one of the 1k's. They have such a small pad underneath that it's easy to burn it off.. given it was the first one I soldered down, it was definitely suspect. Anyways, since they are...

John, will do, just waiting for those components to show. I removed the one resistor so can't make any determination until I get that back on. I do know what has to be done, just wanted to share my saga with the community. I will re-check for shorts, I actually take out my SLR with one of...

Well, everything tested fine during thermocouple assembly, but, I am guessing I goofed on something. Just re-doing all of the resistor mounts (chip looks OK but I'll go there if I have to) and one of my 1k connections sucked. Going to order another one and fix it up. Right now without it...

^ Check the other thread below, the thermoworks probes are half off today :) perfect time to de-maverick The LED, if you have an electronics store nearby, that should be something easy to find in person.

Awesome, I was just going to refresh probes as well. Glad I didnt buy last night :)

Question - Doing thermocouple calibration now. Have the probe in water at the moment.. temperature is bouncing all over the place between 141 and 149 degrees each second, at 5mv/c. Making it hard for me to get a steady reading to calibrate. Is that normal or did I mess something up? Edit, I...

Well thank you. Luckily you can't see in person under a magnifying glass to be as critical as me.. but hey, for not doing SMD in forever, everything functional, I'll take it... like riding a bike.

Further to this ^, it was very intuitive to do the thermocouple components (for me, at least). If you need pics, I posted some, also the Thermocouple testing procedure provided what I needed for assembly. The only thing that matters as far as orientation is the chip. Resistors were marked...

Just built my 4.2.4 and stole a part or two from the 4.0... RIP . Can't wait to get the UDS fired up with this and dialed in. Have not soldered SMD in forever.. looks like crap to me, but, metered out as it should! Rest of the soldering job... man I'd like to go back in time when I was...