this post was submitted on 23 Sep 2026
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What convenience? You open the door, a light goes on, it is cold or freezing cold inside depending on the door.
The end.
My parent's McClary fridge from the 1960s still runs on the original refrigerant.
Don't tell me about energy efficiency when
We are awash in renewable electricity
Building new fridges every five years filled with e-waste running garbage software requiring a networking infrastructure on top of it surely used a few joules as well.
It's not in a landfill.
I can't wait for the global energy crash, maybe we'll be calmer and wiser when gas is 100$/liter.
for one, beeping after you leave the door open for 30 seconds. considering the longevity of a fridge, adding a microcontroller that does that is more environmentally friendly.
I think you don’t need microcontroller for that?
i think you do, for the counting and beeping.
No I don’t. I can use common door switch and a time relay for that, which triggers buzzer. It cost a lot more than microcontroller, but you can do it.
Microcontrollers are cheaper then analog clocks
Yes they are, but that wasn’t the point.
beeping after you leave the door open for a few minutes, also electricity is over a quarter a kilowatt hour some places.
Y'all just leaving fridges open all day where you are? In my neck of the woods "Stop staring and pick something, you're letting all the cold out."
fridges don't always close properly
Well
A) Close it properly then. We have one of those at work, old worn out gaskets, fridge pops open when you close the top freezer, and somehow we can manage to figure out how to close it back up every time.
B) Replace your gaskets.
a microcontroller, couple sensors, and a speaker are cheaper
And yet you still need to replace your gaskets when they're failing, because the gaskets are also important to the function of the fridge.
Now, am I going to spend the $15 to get gaskets for my bosses fridge? No, that's his problem, but I can still "A) keep it closed."