Gene Café with PID Program Control

[smaca]

Re: Gene Café with PID Program Control

Hi MZ,

Excellent work!

Where did you get the parts from? Also, do you have more detailed modification instructions?

Thanks

[Mocha_Zarba]

Re: Gene Café with PID Program Control

Hey smaca,

I purchased the PID from the US, it actually worked out cheaper, I can PM you with more details on that. Relays from local electronics store. As for the circuit, sorry trade secret !.  

MZ

[smaca]

Re: Gene Café with PID Program Control

Hey MZ,

Yes, could you please PM me with the details.

Thank you!

[wrstikoff]

Re: Gene Café with PID Program Control

Love your work smaca, very nicely done.

Im intrigued by the drying cycle concept, Im going to give it a go.

wrstikoff

My appolgies MZ :-[, should have had another coffer first

[TC]

Re: Gene Café with PID Program Control

Love your work smaca, very nicely done.

Im intrigued by the drying cycle concept, Im going to give it a go.

wrstikoff

ERM....I think it may have been MZ who deserved the pat on the back there :-?

2mcm

[hazbean]

Re: Gene Café with PID Program Control

" Do you have a drying cycle in your profile, if so what are your thoughts. Im getting great results with 150 deg"

As it happens, Ive been thinking for a while about the usefulness of having a
slow buildup at the start of a roast, for some beans. So I was interested to see
a recent post on home-barista.com by Jim Schulman of Coffee Cuppers, which
basically says that its important to have an approx four minute drying phase
bringing the temp up to 150C, then (usually) fairly quickly to first crack, moving
slowly through first crack, then controlling time to end of roast / second crack
depending on desired flavours.

Id conclude from that that a slow drying phase is good for all beans, not just some.
So Im adjusting all my profiles to have some time programmed at 160, the iRs
lowest temp. Unfortunately the thing has its own ideas about how to behave at
lower temps, and although my program wil keep the temp down a bit, Im usually
measuring 160C at 2 mins and about 195 at 4 mins. On the positive side, colour
is usually very even, and its possible to get good control of the later stages.
I guess it needs a PID ....

Do you have any comment on cupping, with and without the drying stage?

PS the abovementioned post is the second in this thread:

http://tinyurl.com/yrp8ra

[Mocha_Zarba]

Re: Gene Café with PID Program Control

Modified GC Update



My Modified GC has preformed flawlessly and accurately. Plots are revealing a temperature difference between set values of no more than .8 deg; at an ambient temperature difference of 6 deg, also It hasn’t been necessary to stop any roast manually.

It appears my Modified GC’s magic number, is somewhere between 230 deg & 234 deg.

Profile 1 has been updated. Extended roast time by 2 minutes, and lowered target temperature by 3 deg. See plot for more details.

Enjoy!

MZ.

[Mocha_Zarba]

Re: Gene Café with PID Program Control

Watch This Space.  :-/

Second installment here soon.


Modified GC with PID Program Control takes a step closer towards “Robe de Moine”.  



Add On

2 Stage Exhaust System with soft start / D.O.L starting & count up or count down roast timer.  




MZ.

[GoneBarista]

Re: Gene Café with PID Program Control

MZ its  "Robe de Moine" in French  not "Robe de Mone" :

Your Best Friend,

Serge

[Mocha_Zarba]

Re: Gene Café with PID Program Control

Hey Serge,

Pardon my French.  

MZ.

[Mocha_Zarba]

Re: Gene Café with PID Program Control

DISCLAIMER
-----------------
This site, I or the manufacturer of Gene Cafe CBR-101 shall not be responsible or liable, directly or indirectly, for any damage or loss caused or alleged to be caused by or in connection with use of or reliance of this information. No approval has been given by the manufacturer of Gene Cafe CBR-101 for any modifications to the Gene Cafe CBR-101. Any modifications done should be carried out by qualified electrical personnel.




Sorry for the delay, preparing the document was more challenging than the actual project; the document is brief and scaled down...

The complete system is running smoothly, hopefully I can get down to some serious roasting, unless I come up with a third installment!  
Please follow the link.

http://attachments.wetpaintserv.us/9AxuCYzW8Z04x0jaVvoMCQ%3D%3D991851


Enjoy!

MZ

[Javaphile]

Re: Gene Café with PID Program Control

That looks like a nice setup there MZ!


Java "Lovin the mods!" phile

[Wushoes]

Re: Gene Café with PID Program Control

What awesome modifications MZ...well done. Looks very pro!

[Mocha_Zarba]

Re: Gene Café with PID Program Control

Thanks for you encouragement, Im very happy with the whole system, it works a treat.


MZ.

[TC]

Re: Gene Café with PID Program Control

Brilliant work MZ! [smiley=thumbsup.gif] Ill be calling you if I can ever scrounge together the bucks required for that 2kg roaster I fantasise about ;-)