User Manual

This example uses one range for deciding where to go when making a transition, then it waits for the

servo to leave a slightly larger range before making another transition. As long as the difference (10 in

this example) is larger than the amount of noise, this will prevent the random jumping.

Note that this example will only work if you connect your potentiometer to one of the analog input

capable channels (channels 0–11). The inputs on the other channels are digital.

Using a button or switch to control servos

It is possible to connect a button or switch to a Maestro and detect the state of the button in your script.

The script below moves a servo through a predefined sequence of movements, advancing to the next

step each time the button is pushed. It uses channel 0 for the button and channel 1 for the servo.

The button channel must be configured as an input and wired correctly. See Section 7.b for

instructions on how to wire a button to your Maestro using a pull-up resistor, so that the input is

normally high, and when the button is pressed it goes low.

# Set the servo to 4000, 6000, or 8000 depending on an analog input, with hysteresis.

begin

4000 0 300 servo_range

6000 300 600 servo_range

8000 600 1023 servo_range

repeat

# usage: <pos> <low> <high> servo_range

# If the pot is in the range specified by low and high,

# keeps servo 0 at pos until the pot moves out of this

# range, with hysteresis.

sub servo_range

pot 2 pick less_than logical_not # >= low

pot 2 pick greater_than logical_not # <= high

logical_and

begin

pot 2 pick 10 minus less_than logical_not # >= low - 10

pot 2 pick 10 plus greater_than logical_not # <= high + 10

logical_and

while

2 pick 0 servo

repeat

endif

drop drop drop

return

sub pot

1 get_position

return

6. The Maestro Scripting Language Page 83 of 102