Our track layout uses automated switches. The current version that we are using (three in total) is based on the NXT motor. Using a (NXT) touchsensor, the PC application can determine the ‘status’ of the switch (i.e. in which direction is the lever positioned):
Since we will need four switch drives and based on the EV3 (so it can be controlled by one brick), I thought it would be a good moment to redesign the drives.
I came up with a modular drive system. I designed a ‘fixed’ part without the motor that converts the rotation into the lever movement. And four different motor modules that can be connected to the axle:
- Based on the PF motor
- Based on the EV3 M-motor
- Based on the EV3 L-motor
- Based on the NXT motor
I am going to design a separate module for reading the lever position, one based on the EV3 Touch sensor and one based on the NXT Touch sensor.
If you want the building instructions of these modules, please do not hesitate to contact me.