The hand took a while to build using bits I found at Bunnings, the supermarket and a haberdashery place. There are 4 x brand new Eflite micro servos and 2 I pulled out of a dead Twister medivac RC heli :) Custom PCB with 4 inputs (buttons) is powered by a 5V 1.
5A power supply, and the Arduino is powered by the laptop (for now). Used latest Arduino IDE in Ubuntu - works great!
So, all up (including the Arduino, servo's, PCB, materials and 2 x 5v power supplies) was under $300!
Hope you like the vid!
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thanks much for interest...