Chris' Blog random stuff i did

Repairing a Roborock S5 Max Robot Vacuum

so, a few weeks ago my sister bought a used Roborock S5 Max robot vacuum cleaner. it worked perfectly - for a few days. then it started to have problems with navigation, simply turning in circles in open spaces. Robot... Read more

On the T45

as already rumored, the T45 is basically a beefed-up T40, with some parts substituted for (likely) cheaper alternatives. i wanted to check that myself, so i decided ask on the OpenWrt forum if anyone had a T45 they could provide... Read more

Overclocking the WatchGuard T40

with linux mostly running (and me still procrastinating continuing further work on it), i figured i’d try and solve my last hang-up with the T40. the T40’s SOC is a NXP QorIQ LS1043A, and that supports up to 1.6GHz. however,... Read more

cracking the T40's U-Boot

with linux mostly running (and me procrastinating continuing work on the last ethernet PHY), there still was a little hangup for me: on the T40, it’s easy enough to get into U-Boot by simply removing the SSD. but wouldn’t it... Read more

Reverse-Engineering the Front Panel of a WatchGuard T40

with linux mostly working on the T40, i decided to take a look at getting the front panel LEDs and buttons working. Preparation to prepare for this, we first need to dump the file system and figure out what controls... Read more