Best list of arduino project ideas along with sources we have published here. It includes arduino based battery charger, arduino based thermostat and etc.
Drones are very popular toys and tools these days. You can find professional and even beginner drones and flying gadgets in the market. I have four drones (quadcopters and hexcopters), because I love everything that flies, but the flight isn't so in
Lets build an Arduino based flight controller that can do wireless PID tuning, Orientation lock and altitude hold and position lock with the help of A GPS.
Helicopters and Drones Bargains
PaulMakesThings has a pretty cool instructable on how to build a tiny Arduino Nano based robot. This robot uses two modified servo.
Make your own quadcopter Check out http://arduinohq.com for cool new arduino stuff!