Multiple Servo Controller circuit kit with 4 Digital Encoders and Alloy knobs
http://www.picokit.com
New servo controller for all your robot projects. This board controls up to 4 servo motor with nice shiny rotary encoders. These are not analog pots (potentiometer). These digital encoders have 24 unique clicks in each revolution, and continue to turn for as many revolutions as you need to turn the 180 degree servo mechanism
The kit is controlled by a microchip PIC, and can be reprogrammed with our PicoFlow USB Programmer and PicoFlow Alpha flowchart programming software.
Kit is easy to solder, and as an option, you can also get Transient voltage suppressors (mosorb diodes) so the kit could control something in a car without the worry of voltage spikes from an alternator or generator.
Uses a 5V power regulator so you can power it from any DC voltage between 5V to 30V.
Supplied with a 9V battery snap so you can easily power it with batteries. But make sure your battery can handle the current draw of whatever servo motors you choose.
Buy it from www.picokit.com