insideGadgets

– Use Nokia F-bus to send SMS message
– Using the nRF24L01 wireless module
– Building NAS4Pi: A NAS built using the Raspberry Pi – Part 2
– Building a SMPS based on the MC34063
– GBCartRead: Arduino based Gameboy Cart Reader – Part 1: Read the ROM
– GBxCart RW: – Part 1: Design and Testing Gameboy Carts (To read GB/GBC/GBA carts)
– Building the Mini Temp Logger Part 1: Re-design of the SATVL/A25TTL into another product
– Building a KVM
– Building a CPLD Based Logic Analyser (Logic Observer)
– A look into CPLDs – using the Quartus II software and ModelSim

Gameboy/GBA related:
GBxCart RW (Reads GB/GBC/GBA carts)
Gameboy Cart Shield (Reads GB/GBC carts)

Loggers:
Logic Observer (8 channel Logic Analyser)
Mini Temp Logger (with RTC and TMP102)
ATtiny25 Tiny Temperature Logger
Standalone Temperature/Voltage Logger

Misc:
AT Mini Matrix Ctrl (small LED matrix controller)
Small Programmable Power Supply
Expandable KVM (VGA/USB)
ATtiny Programmer Adapter
LiPo Battery Storage Monitor
15V 2A Adjustable Power Supply
Nightstand Alarm Clock
Large LED Real-Time Clock
RGB Wifi Controlled LED plus Server
Audio Switcher+Mic Boost iPhone/Desk Phone 
Low Voltage Battery Monitor
Non-Contact Blackout Detector
ATtiny25 Basic VCO
Simple LM317 Solar Charger