Stc-1000+

Hi from Australia, thanks to everyone contributing to the project and this forum in general. I normally visit aussiehomebrewer.com which I believe is owned by Austin now as well.

Anyway...

I accidentally ordered 110v units instead of the 220 required in Australia.

I have flashed them with 1000p however they are useless to me. I will put them on ebay but thought I would check here if anyone is interested first.

PM me if you like...

Sorry if this isn't the appropriate section.

edit: just found this thread... http://www.homebrewtalk.com/f258/stc-100-220v-110v-easy-fix-308389/

As you were...

 

I appreciate the vote of confidence, but i wrongly assumed (based on an internet video or two) that the hot from the power supply was linked to the hots for heating and cooling through the board itself (my other controller works that way). Apparently that is not the case, which means no puff of smoke - there was no power to those terminals to create an issue.

I'll fix the wiring in the next week or so and will send an update picture with my (hopefully) working controller.

 

Forgive me, but I seem to remember reading somewhere about a setting that would allow us to shut the heat/cool off early, before we hit the target temperature. My freezer cools so quickly that it shoots 2+ degrees below the target. Kinda frustrating.

 

Thanks - I ordered a few more too as spares.

 

If you add a second temp sensor you can use HY2 as a way to shut off the heating or cooling before target temp is reached.

On alpha's github he has the directions posted on how to add the 10K resistor, 3 block terminal etc.

If you need anything in pre-assembled fashion i have dual sensor assembled (in enclosures etc) controllers.

 

Hrm... okay. I will play with larger hysterysis levels with the primary sensor. I am not quite to the point of adding a second sensor.

 

@banesong, there are a number of things you can experiment with. Probe placement, insulation for the probe. You could try using a smaller hysteresis setting, have the setpoint be a little bit above the desired temperature and rely on compressor delay instead to limit cycling.
Where is your probe located? Taped to the side of the FV?

 

working on it

 

Good then you can come over and reprogram mine

 

Yes - you're right - before you leave for the summer...

You going to Ben's on the 28th?

 

Nope to far to go in a day. that and it's the wifes BD. A happy wife is a happy life

 

Thought you guys might be interested in this. I used an EL-USB-1 submerged in the beer, a EL-USB-2 sitting next to the fermenter, and the probe from the STC1000+ taped to the side of the better bottle with reflectix and a rag over the end of the probe to insulate from the ambient air. I'm going to see if putting a computer fan in the minifridge helps with controlling the overcooling/heating cycle that seems to be happening. Maybe I need to play with my hy and hd setting also.


ps The loggers started at noon on brew day and I didn't get wort into the fermenter until about 3pm. Wort went in at 56°F at which point I started the temp profile.

 

Does anyone know what the relay type is for the stc1000 I assume they are electromechanical vs solid state .

 

The ones i've seen are called JCQ 3FF.
Yes. Electromechanical.

 

Does that type of relay factor well with very acute hysterisis. Typicaly they run a 10 second cycle on/off included.any idea what the life expectancy for this application.I know it is relative to the heat efficiency just wondering. How often would the relay hit in tight control. I assume it is a DPST type.

 

https://www.futurlec.com/Relays/JQC-3FF-12.shtml

 

thanks

 

So it appears my version of the STC-1000 doesn't have the programming pins and the board version seems to be FR-4...probably not flashable right? Where is the best place to get these? I got this one on amazon...

View attachment 1426633693660.jpg

View attachment 1426633704206.jpg

 

I have them Already flashed with 1.07 if interested

 

@fusa I received your pro mini today, there were a couple of wires mixed around and pin 9 wasn't being used, pin 6 was. I have it aced up and just flashed one of my controllers with it to verify it's working. Will get it sent back to you Monday.

Greg

 

Thanks for you help, never thought to check if I had switched pin 6 and 9.

 

Hi, Is it possible to flash this unit with Board WK-02-k?

 

Was anyone ever able to flash this particular board?

 

Followed ya'lls directions, fixed the wiring, and *thought* it still didn't work. Turns out I shouldn't try and troubleshoot late at night when I have to travel the next morning.

I realized on the plane I was checking voltage across the two hot pins, which would *never* give me a result. The SWMBO was nice enough to test it for me using a lamp and voila - we're in business.

Thanks for the wiring diagram - it made getting this working much, much easier.

 

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

 

A few posts up a few guys have had luck with this ebay seller

http://m.ebay.com/itm/261660479398?_mwBanner=1

I'm unfortunately out of loose controllers for diy kits, waiting on another shipment.

But do have lots of assembled units on the shelf if you were looking for one

 

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

 

Does anyone know if an RTD sensor like this will work with the STC-1000?

 

Unfortunately, no. The temperature tables are written for NTC type units, as well as the components.

 

EDIT: The two I had have been claimed.

Not trying to get into resales or anything but if someone needs to find an unflashed version 1.0 I have a spare confirmed one (maybe two) I could part with for cost and shipping. Still in box and unused. Only opened to confirm they are flashable.
View attachment 1427752123250.jpg
Board version
View attachment 1427752135233.jpg
Programming pads

 

I'm interested, sending PM.

 

I have one I am interested in selling, too. I'll just never get around to getting anything to flash it with.

 

If you cover shipping I'll flash it for you just send it over

 

I apparently ordered 3 of the wrong STC-1000 boards. Can anyone tell me how to know I'm getting the correct one please? I haven't seen anywhere where any ebay sellers show what board version they're selling.
Thanks

 

You order from smithabusa.

 

Thanks! I'm currently out, but have 100 on the way very soon

 

Hey Greg it seems your link (on this page http://www.boostbysmith.com/fermkit.html ) to the user manual for the STC-1000+ is broken. Where else can I find that manual?
Thanks

 

I've done some cleaning up and renamed usermanual.md to README.md, so github automatically will show it when browsing the source tree.
The usermanual can be found here.

 

Cool thanks Alpha. And thanks again to you, Greg, and anyone else who has worked on this project