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ggramlich26 / BZ10_upgrade

GNU General Public License v3.0
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TSIC 306 Placement #1

Open smoki3 opened 3 years ago

smoki3 commented 3 years ago

Hi,

very nice project. Could you share a picture where and how you have assembled the TSIC 306? Especially on the boiler and the HX?

ggramlich26 commented 3 years ago

Hi, thank you. I just added the photos under "images mod/". I used thermally conductive glue to attach the TSICs and zip ties to hold them in place until the glue had dried. Then I insulated them with mineral wool which I attached with kapton tape (that actually makes a difference of multiple degrees in the measurements). For the brewing unit I glued the TSIC to a small disk, which I then screwed onto it intead of the original bimetal switch. That's just to sure I could undo my changes in the worst case. The temperature sensor on the pipe from HX to brewing head is not a big help unfortunately, because the tube slows its reaction down too much. One would probably need to place a sensor inside the tube or the HX boiler itself to get precise measurements.

smoki3 commented 3 years ago

Okay thanks for the pictures :) How is your experience with the temp sensor outside the boiler? The BZ07 for example uses a tube which goes into the boiler to measure the temperatur

Do you also have the layout ready for the pcb, or you maybe have one pcb remaining? I also bought a BZ10 and want to mod it too.

ggramlich26 commented 3 years ago

A temp sensor inside the boiler certainly is the better option but it I didn't want to dril a hole in my boiler. Placing the sensor outside the boiler adds a noticable latency.

I can add the layout for the PCB but the current version still uses an ESP32 board with integrated antenna. Since the metallic case of the machine acts as a faraday cage, you'd have very bad intenet connection in there. I just cut the antenna off and soldered a coaxial wire with SMA connector to it. I then lead it out of the machine and attached a regula WiFi antenna. I can also send you a PCB. I think I have four left atm.

Reisediel commented 1 year ago

I got a BZ10 shortly and I want to mod it. For temp measurement inside the boiler you can unscrew screw #1 and replace it with an 1/4" probe like in the boiler from a BZ07. https://www.avola-coffeesystems.de/bezzera/bezzera-bz10-heizung/8279034

smoki3 commented 1 year ago

Yes correctly