How can I tell if a sensor/servo will be compatible before I buy it?
Look at the Specifications of the Vex Controller, and the Sensor/Servo.
Did you have something specific in mind??? A specific Sensor or Servo would be helpful.
No nothing specific in mind yet because I haven’t gotten the kit yet. I just have some ideas running around in my head, and I’ve been looking online at some different parts such as GPS and timing clocks. I should have my kit in a week or so. I’ll just wait and read up on it first. Thanx
Start with the Vex Controller Specifications.
Look at the Requirements:
Interrupt Inputs 6
Digital I/O 16 max with no Analog, Each can be Input or Output (shared with Analog)
Input Impendence
Analog/Digital - The input consists of a 470K pull-up to +5V and a series resistance of 1K to the uP.
Interrupts - The input consists of a series resistance of 1K to the uP. More info - Input Schematic.
Analog Inputs 16 max with no Digital, 10-bit resolution (shared with Digital)
Digital/Analog
as Inputs 3 dB bandwidth of 150 kHz, weak pull-up of 470k-ohms to 5.0 volts,
need 0.0 to 0.6 volts for a low and 4.0 to 5.0 volts for a high
Interrupts
as Inputs 3 dB bandwidth of 150 kHz, weak pull-up of 47k-ohms to 5.0 volts,
need 0.0 to 0.6 volts for a low and 4.0 to 5.0 volts for a high
Digital/Analog
Interrupts
as Outputs As outputs these ports can drive an open circuit to 0.6v or lower for a low and 4.0 volts or higher for a high.
They can drive a 1 mA load to 1.6v or lower for a low and 3.0 volts or higher for a high.
Motor Outputs
As outputs these ports can drive an open circuit to 0.6v or lower for a low and 4.0 volts or higher for a high.
They can drive a 1 mA load to 1.0v or lower for a low and 3.6 volts or higher for a high.