Has anyone tried to open the litter and tried to dump the microcontroller ?
My router advertise it as Espressif, so it may be “powered” by esp or something like that.
I have a Pura MAX, but no skills at all regarding fw dump, so if anyone has the courage to reverse engineer it, I can help ! 
It could be really nice to fully control the litter box in local only, instead of relying on petkit servers.
It is indeed an Espressif device.
I haven’t had a more thorough look at it as it is in daily use by my cat, but here’s a quick photo of the control board, you can clearly see the ESP device on the right hand side 
You can find flash dumps for both internal microcontrollers inside a pura max at my repo here:
Are there any developments on this one? I own a Pura Max; sometimes it goes offline and is not fun. Also I would love to control it locally instead of being dependent on PetKit cloud
