I have a notoriously poor green thumb. I have killed every plant I have ever owned, including hollowing out a cactus or two. After coming across The Plant Whisperer at Instructables.com I have hope that one day I will properly be able to care for a house plant. The Plant Whisperer measures the moisture of the plant’s soil every 2 hours and will shout at you when it needs water. You can program The Plant Whisperer to shout out whatever you want when it is in need of water, some suggestions are, “I’m Thirsty!” or “Feed me!”
In addition to soil moisture readings, it can also detect the ambient light and shout at you to fix the amount of light it is receiving. It is based around a Parallax Propeller and the main components are a two-channel ADC, a two-hour timer IC, a load switch and an audio amplifier and will cost about $30 to build. Plus, check out that groovy/swoopy PCB!
The Attack Dyno brings car enthusiasts an attack timer and dynamometer in a small, portable package with the ability to output vehicle torque, speed, horsepower, 1/4 mile times, 0-60 mph acceleration times, ambient air temperature, and more.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.