Tune motor jitter

1.5% fixed error, 1% random error

Author: WillB97

simulator/modules/sbot_interface/devices/motor.py

@@ -119,7 +119,7 @@ def set_power(self, value: int) -> None:
             else:
                 # Apply a small amount of variation to the power setting to simulate
                 # inaccuracies in the motor
-                value = int(add_jitter(value, (MIN_POWER, MAX_POWER)))
+                value = int(add_jitter(value, (MIN_POWER, MAX_POWER), std_dev_percent=1))
 
         self._device.setVelocity(map_to_range(
             value,

simulator/protos/robot/MotorAssembly.proto

@@ -51,7 +51,7 @@ PROTO MotorAssembly [
             name IS name
             %<
               import * as wbrandom from 'wbrandom.js';
-              const motorVariation = 0.01;
+              const motorVariation = 0.015;
               // equivalent to Java's String.hashCode()
               // https://gist.github.com/hyamamoto/fd435505d29ebfa3d9716fd2be8d42f0
               function hashCode(s) {
@@ -65,7 +65,7 @@ PROTO MotorAssembly [
               let motorCoeff = 1 + wbrandom.real() * motorVariation;
             >%
             # seed the random number generator with the name of the motor
-            # Add 1% variation between motors
+            # Add 1.5% variation between motors
             maxVelocity %<= fields.maxVelocity.value * motorCoeff >%
             sound ""
           }