Bit of a change in format; instead of one massive post for all the misc. 11-11 teardowns, I’m grouping them. This post is the “LED Controller” group. I managed to snag the following on Ali Express:
To continue from last year’s trend, I waned to celebrate that all three of these LED controllers have:
To make a very long story short, I need to move away from my very old 802.15.4 radios plugged into a very old Raspberry Pi for my smart home setup. After some research, the SMLIGHT SLZB-MRW10 is new, uses modern radios and ships with firmware that makes it trivial to move packet processing into compute distributed on the other end of the network.
To make a long story short, I allocated a few hours to build a tool that can read/write the SFP module’s EEPROM. I then wired this up to a logic analyzer and compared the read/write operations to what the SFP Wizard does when it tries to unlock a module.
TL;DR:
Curiosity got the better of me when browsing AliExpress and I spotted this GPS NTP server for under $100 USD.
I needed a cart-stuffer anyways so I ordered one as a backup for my existing GPS/NTP server.
While waiting, I took a look around to see if there was any additional information about who makes this / if there was a custom firmware or similar.
Nope, there there is not a ton of information about the YK-1000H online.
While diagnosing a flakey fiber link, i ran into a situation where a basic “flashing red” visual fault finder was not sufficient. I needed to actually measure the optical power levels on both ends of the link to ensure that the fiber was not damaged and that the SFPs were operating within spec.
This was the cheapest tool that could be delivered quickly. The issue was found and fixed so now let’s have a look inside.
