Minors please bring a guardian. Class is no charge. See parts lists. This is what the servos use. The power supply will need to supply up to 1 amp surges.
Batteries can do thisl.
Alkaline or Nicad rechargeable batteries will work. Introduction to the DPRG Workshops 2. Torque, speed, size, cost f. The main output shaft has splines, or grooves, laterally on the outside circumference of the shaft. A screw is screwed thru the horn into the center of the output shaft to hold the horn on.