I was able to get it hooked up and it's really nice to see the boiler temp in front of you like that. I pulled my shot at 220 and all was good, but need to experiment more. One thing I noticed was the boiler temp as I was pulling the shot dropped from 220 to 170 - yikes! Obviously this is due to pulling in fresh water from the reservoir - I don't have any idea what the profile of the temp going through the group looks like but I'm sure it must have dipped as well. I think even a PID wouldn't be able to react quickly enough to fix this, it's just a limitation of the small boiler size of this machine. Anyhow, carry on.. If you guys with your PIDs have done any work, do share :)
Coffee4Steph Senior Member Joined: 2 Apr 2010 Posts: 20 Location: California Expertise: I love coffee
Grinder: Mazzer Super Jolly Vac Pot: Yama 8 cup
Posted Mon May 3, 2010, 6:28pm Subject: Re: What has 2 thumbs and loves his PIDed Saeco Aroma?
It's possible you could add a band heater around the boiler, that combined with a pid might be able to react quick enough? You might then need to try to take water temp and not boiler temp (the band heater would likely throw off normal temp reading methods). but in this case, the low thermal mass of the boiler would be an advantage because of quick thermal recovery. and FYI the pump on my saeco is dead. I dropped the ball and bought a silvia instead. I might keep the saeco and mod it... a LOT, just to see what I can do. lol.
Jas0n Senior Member Joined: 13 Apr 2010 Posts: 53 Location: San Jose, CA
Espresso: Pasquini Livia 90, *$... Grinder: Baratza Vario
Posted Mon May 3, 2010, 9:15pm Subject: Re: What has 2 thumbs and loves his PIDed Saeco Aroma?
I've tried to kill my saeco numerous times by running the pump with the reservoir empty... no luck. LOL Waiting for a silvia to come on craigslist for a reasonable price and in my area. I'm not interested in modding this thing anymore, the thermo on the boiler helps pull much more consistent shots, so I'm not convinced that it's be all that much better with a PID. I thought it might be fun to do, but if I find a non-PID silvia I'll get the opportunity eventually. :)
Posted Fri May 7, 2010, 2:04pm Subject: Re: What has 2 thumbs and loves his PIDed Saeco Aroma?
I got tired of waiting so I took the plunge an picked up all the parts to PID my Saeco Aroma. Once I had everything it still wasn't clear on how everything connected to each other until I studied how the guys did it on the Racilio Silvia. Quite similar actually. After finding out the location of the brew thermostat (on mine its the one closer to the front of the case), I was good to go. My voltmeter came in handy in terms of finding the right spade connectors to power the PID when the main switch is turned on. Overall, once you know what goes where, it should take no more than an hour to hook everything up. Cutting the project box to house the PID took almost as long. I will try to put up more detailed instructions and pictures on how to tackle this project. Here is what is looks like after it was done.
Might try using the alarm function to control steam temperature (link) if I swap my wand out at some point. I find that too much steam with the crummy stock panarello just creates froth and doesn't get the milk hot enough before you're overflowing with bubbly foam.
Any questions, give me a holler.
As for any increase in shot quality, I suppose it remains to be seen. To be honest, I'm not sure how much difference it will make, but it was fun to tinker with anyhow.
For those who are interested, these are the PID numbers returned from the autotune:
dshavers Senior Member Joined: 28 Jun 2013 Posts: 23 Location: Alameda,CA Expertise: Just starting
Espresso: Starbuck Barista
Posted Mon Aug 19, 2013, 6:34pm Subject: Re: What has 2 thumbs and loves his PIDed Saeco Aroma?
Sorry to revive such an OLD thread, but I'm begging the stage of adding a PID to my barista using this thread and parts list as a reference. Have any of you guys had any issues with the SSR and heat? Seems like mounting it inside the machine would act as a decent heat sink.
I have a link to a PDF that shows the install inside a barista. Just pm your email, and I'll send it along. Or just email me at email@example.com
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