Mearm robotic arm kits mearm mearm nuka cola blue the mearm robot arm kit is a great maker kit containing the laser cut acrylic parts 4 x servo motors and all the necessary screws and nuts just grab a small screwdriver and the supplied allen key theyre the only tools youll need to assemble your mearm the parts have been carefully numbered to make building as easy as possible using the detailed assembly instructionsservos are controlled by low current pwm signals which means that they