The SRT100 actuators are based on stepper motors. Accurate and powerfull, they allow to build a 2DOF (2 actuators, pitch/roll) or 3DOF sim motion rig (3 or 4 actuators, pitch/roll/heave) for approximately 300€/actuator.
The wiring is quite simple. Each driver is controlled by two wires : pulse and direction. Once the driver received a “pulse” signal, the motor will moves a step. If you have three actuators instead of four, you just have to not wire the fourth motor. The “direction” signal indicates in which way the motor […]
OpenSFX100 actuators operate very similarly to SRT100 actuators. The difference lies mainly in the use of servo motors instead of stepper motors, which are both cheaper and less powerful.