Definitely the coolest calculator I've seen in a while
Handheld C64! pretty neat.
Great insight into the hardware of the DS
Interesting article from the author of bsnes on the trials and tribulations of absolutist SNES emulation
Very cool article about using the IR features of a Gameboy Colour to control an air conditioner
Another interesting article about CompactFlash and IDE
Another interesting article about CompactFlash and IDE. Goes into detail on DMA capabilities.
Neat article that goes into detail on how CompactFlash cards work with the IDE bus
Interesting project that allows you to flash custom firmware to IoT devices which use modules from Tuya (which are, at their core, essentially ESP8266 modules)
Documentation for installing custom firmware to IP cameras based on the Xiaomi Dafang (such as those sold by Neos in the UK for astonishingly low prices)
A really useful resource not only for the Raspberry Pi's pinout, but for the pinout of a huge number of addon peripherals designed for the Raspberry Pi.
Another interesting article (well, in this case more of a presentation) about NTAG215/Amiibo emulation
Interesting article about emulation of an NTAG215 NFC tag with Amiibo data!