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A Linux-powered microwave oven

lwn.net

11–20 of 65 posts

Re: A Linux-powered microwave oven

#11

That's a fine looking death machine there. Then again, the buttons on my microwave are also so horrible I've been tempted... If he gets the voice control worked out to where I can say "Tea, Earl Grey, Hot" I might be sold.

I bought a "crappy" brand microwave because it has a great UI:

One knob with rotary encoder for time (turn faster for minutes).

One knob with rotary encoder for power.

Both settingscan be changed even while microwave is running.

Re: A Linux-powered microwave oven

#13

Linux on a microwave feels a lot like the NetBSD toaster from all those years ago. Additionally, it doesn't make sense from a technical perspective. People have converted toaster ovens to do smd reflow with an arduino [1], and that requires a lot more delicate control of temperature and timing; hell, Linux is worse for the job because its realtime capabilities are so poor. Also, if you're going to go through the trou…

Hi! Maybe you know of any oven that is using [2] or similar? I would like to buy one. Thank you.

Re: A Linux-powered microwave oven

#14
For some reason you can't open the microwave door to get your food.

After searching LWN you find a comment at the bottom that you need to run fuser on /mnt/microwave/0/door/mechlock and kill the dbus_microwave_door_status daemon.

Search google again to discover a blog from 2004 detailing how you use dmesg and modprobe to find out which number your microwave door is bound to.

Re: A Linux-powered microwave oven

#15

Linux on a microwave feels a lot like the NetBSD toaster from all those years ago. Additionally, it doesn't make sense from a technical perspective. People have converted toaster ovens to do smd reflow with an arduino [1], and that requires a lot more delicate control of temperature and timing; hell, Linux is worse for the job because its realtime capabilities are so poor. Also, if you're going to go through the trou…

Hi! Maybe you know of any oven that is using [2] or similar? I would like to buy one. Thank you.

It doesn't look there are any available, although there are a multitude of press releases from the last couple of years [0].

[0] https://www.google.com/search?q=solid+state+microwave+oven

Re: A Linux-powered microwave oven

#16

That's a fine looking death machine there. Then again, the buttons on my microwave are also so horrible I've been tempted... If he gets the voice control worked out to where I can say "Tea, Earl Grey, Hot" I might be sold.

>Then again, the buttons on my microwave are also so horrible Is it really that hard to push "Time cook -> 2 -> 3 -> 0 -> Start"? I mean come on I can understand wanting to optimize your life or whatever but complaining about microwave buttons seems a bit ridiculous.

Mine often makes the beep without registering the press. Drives me nuts.

Re: A Linux-powered microwave oven

#17
post #15

Earlier quoted context omitted.

Hi! Maybe you know of any oven that is using [2] or similar? I would like to buy one. Thank you.

It doesn't look there are any available, although there are a multitude of press releases from the last couple of years [0]. [0] https://www.google.com/search?q=solid+state+microwave+oven

There are some fascinating things you could do with one of those. You could, for example, make a "stick boiler"—like a "stick blender"—that you stick inside a cup of liquid to heat it up, without any part of the stick itself getting hot. (Presumably there'd be a waffle-grid cross-guard to block reflected RF.)

But, in the wrong hands, that's a directed-energy weapon, isn't it? (Hell, stick one of these in the right kind of tube and you've now got a coherent RF beam—a maser pointer. You could probably burn your name into a wooden building from across a football field with one.)

Re: A Linux-powered microwave oven

#18
post #11

That's a fine looking death machine there. Then again, the buttons on my microwave are also so horrible I've been tempted... If he gets the voice control worked out to where I can say "Tea, Earl Grey, Hot" I might be sold.

I bought a "crappy" brand microwave because it has a great UI: One knob with rotary encoder for time (turn faster for minutes). One knob with rotary encoder for power. Both settingscan be changed even while microwave is running.

That's the standard interface for microwaves for me.

Re: A Linux-powered microwave oven

#20

Linux on a microwave feels a lot like the NetBSD toaster from all those years ago. Additionally, it doesn't make sense from a technical perspective. People have converted toaster ovens to do smd reflow with an arduino [1], and that requires a lot more delicate control of temperature and timing; hell, Linux is worse for the job because its realtime capabilities are so poor. Also, if you're going to go through the trou…

Hi! Maybe you know of any oven that is using [2] or similar? I would like to buy one. Thank you.

The 250W transistors cost £100 each. You probably need a few of them for a microwave. A microwave with these in would cost at least £1k. Probably more, so I think it will be a while.
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