Top
Best
New

Posted by scottjg 1 day ago

Reverse engineering my Coway air purifier to ditch the cloud(scottjg.com)
657 points | 193 commentspage 3
czk 6 hours ago|
its a bummer how gimped claude models have become for research like this
nijave 9 hours ago||
This one yeets in a CA insecurely but eMudhra has been a gift for any that bake the CA--especially the abandonware unlikely to ever get patched.
ACCount39 8 hours ago|
Unironically a gift. On your own home network, the one most likely to MITM you is yourself. And eMudhra's fuckup allows for a nice attack on a few devices you'd otherwise have to disassemble to pwn.
nijave 2 hours ago||
Yeah, I have a couple cheap Tuya devices you can't necessarily re-assemble easily once disassembled (IoT light bulbs, outlets that are plastic welded/glued). Pretty sure they use mqtt over tls
alnwlsn 7 hours ago||
All that to control one of 3 fan speeds. An extra slap in the face when it seems the motor used (at least in a similar model) appears to be continuously variable.

https://github.com/device-teardowns/coway-ap1512hh

ourcat 8 hours ago||
If a company "banned" me from my ability to use the product I bought, that product would move swiftly to a skip-fire.
Animats 4 hours ago||
Air purifiers need an Internet connection in case someone invents a new kind of air.[1]

[1] https://xkcd.com/3109/

varispeed 9 hours ago||
On topic, can you recommend a good air purifier to run in the office? 500 sq ft?

I am tired of having dust everywhere.

micromacrofoot 9 hours ago||
Coway are some of the best, and there are many dumb models without internet access at all

If you don't mind the hum of fans, it's hard to beat a Corsi-Rosenthal box... there are kits from cleanairkits.com or cybernightmarket.com to build quiet PC fan based boxes that in my experience work excellent and can use off-the shelf filters and parts

e40 8 hours ago||
I have a dumb model (1512HH) and it’s excellent.
bethekidyouwant 9 hours ago||
a box fan and a furnace filter.
ValleZ 8 hours ago|||
It works really well and even more - it works better than any purifier even if you just duct-tape the filter you have to a box fan.
poszlem 8 hours ago|||
To people who think this is a joke, it isn't: https://en.wikipedia.org/wiki/Corsi%E2%80%93Rosenthal_Box
phillmv 9 hours ago||
i truly wish these things were not smart in the first place
tonymet 5 hours ago||
We need an Orthodox Union for IOT devices. Parev Kosher would be unlocked bootloader. Meat Kosher would be open source firmware . One level could be an escrow service for skittish companies, where escrow shares the firmware when the company terminates support.

It works in many other industries like UL for electronics, Intertek, NSF for foods etc.

sizzle 5 hours ago||
Anyone know how to permanently disable the ionizer feature on these fans? I hate that it has this feature which is hazardous to health.
jerkstate 9 hours ago|
ChatGPT will allow you to do this interactively then ban you a few days later. Good luck OP.
somehnguy 5 hours ago||
I've reverse engineered and jailbroken a few devices I own using OpenCode & an OpenAI subscription. No bans yet.
More comments...