0
\$\begingroup\$

I'm on a quest for wireless coffee. I've succesfully hacked my nespresso with a nodemcu, that will now let me wirelessly make a coffee. that is - when the machine is already on - so I need to figure out a way to turn it on programatically also, but the button for turning on is different.

After opening up my nespresso lattisima+ (model EN520) I found this push button - a kind of button that I don't know.

enter image description here

How do I find out how it works (i.e. which pins to solder my relay onto in order to switch it on programmatically) without killing myself?

I see a F5 and SW1 next to some pins, but on the back of the printboard I can see that there are pins "hidden", meaning big white block as well.

Thx for helping me stay alive and curious :)

\$\endgroup\$
2
\$\begingroup\$

Bär (Baer without the umlaut) is now a brand of Johnson Electric. Check their website:

http://www.johnsonelectric.com/en/features/energy-saving-push-button-switches-for-coffee-machines

Seems these "Tippmatic" switches have some timer built-in.

\$\endgroup\$
  • 1
    \$\begingroup\$ Searching for [Tippmatic 3620] turns up more information. See page 77-78 of contact-evolution.ch/files/burgess-switch-catalogs.pdf for pinout. \$\endgroup\$ – Ken Shirriff Dec 28 '16 at 3:30
  • \$\begingroup\$ thanks guys - I tried searching for stuff on the pushbutton, but nothing came up - did you guys just know this or is there a logic to finding out? \$\endgroup\$ – Jakob Dec 28 '16 at 10:45
  • \$\begingroup\$ You proably searched for BAR instead of BÄR. The umlaut is significant. I then googled "bär switch" ("baer switch" is the same) and got a catalogue of Johnson Electric. \$\endgroup\$ – Janka Dec 28 '16 at 20:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.