lol this is a Samsung fridge isn’t it?

Wow, this otherwise unremarkable 5 year old fridge has more electronics in it than I would have expected.

Controller is a Cypress (now Fujitsu) MB95F818K, quite beefy looking 8-bit micro with 60KB of flash and some bespoke one wire debug protocol (pin labeled on the board!)

you can just add more if you like

Well, controller board is back in the fridge where it will (I hope) continue to keep our food cool. The mysteries of its firmware and comms remain locked away.

Meanwhile physical inspection gave no clues of problems with the +12V. Maybe its the LED strip in the fridge compartment that's become faulty. 🤞

Oh, the debug pins are even labeled on the outward facing side of the board. They were under a pin cover.

I wonder if there's actually technician debug tools for this thing, maybe even firmware updates? Wild.

@jpm Silly smart LEDs for silly smart fridge!

Yeah, it's funny how we have internet fridges, but a fridge is the most set and forget appliance you could own. I guess one that sent notifications in the event of it losing power or the door being left open, but that's unlikely to be useful unless you are in the vicinity, in which case a beeper is going to be a much better alert.

@stib Yeah, I definitely see the appeal!

I can't really think of the equivalent for my fridge, otherwise I probably would be messing with those control headers...

If I had more time (and no one to tell me not to) I'd be very tempted to swap out the controller boards on all my whitegoods for open source microprocessors so that I could put my own damn firmware on them. So sick of having to go through the menu on my washing machine every time I put a load on, because the default cycle is not one I ever use.
I would gladly pay over the odds for a dishwasher that had a published API so I could write my own programs.

@nickzoic @stib PID control loop

@stib
* Duty cycle is definitely one, a lot of fridges can hold temperature even with a slightly stuck door but they take a lot of power to do so so detecting this would be nice.
* Also adjusting the set temperature to chill right down when power is cheap and let temps come up (to a limit) when prices spike.
* A switchable damper integrated with the house climate system so that in winter, waste heat is kept inside the house but in summer waste heat gets ducted outside.

¡Te han tomado el pelo!

@toddo @tmfox @thatmanmatt I've never seen this but it's lovely!

A+++ would ogle unsubtly at gym

Wärst du in der Nähe, hätte ich dich sehr gerne besucht, liebe Nataly.

@mina

Ah, das ist schön. Ich würde dich gerne zu mir nach Hause einladen 🤗☕

Guten Morgen und einen ganz wunderbaren Sonnabend, liebe Thalestria!

@mina Guten Morgen liebe Mina, ich wünsche Dir auch einen schönen Samstag. 💜
Wir gehen gleich zum Mittagsbuffet in ein chinesisches Restaurant, da freu ich mich seit Tagen drauf.

😂

Guten Morgen, lieber Age, genieße den Tag! 🥰 ☀️

Bill Clinton was born as William Jefferson Blythe III.