removing tacho (#382)

docs/reference/motors.md

@@ -19,6 +19,5 @@ motors.stopAll()
 ```cards
 motors.largeA.speed()
 motors.largeA.angle()
-motors.largeA.tacho()
 motors.largeA.clearCounts()
 ```

docs/reference/motors/motor/clear-counts.md

@@ -17,11 +17,11 @@ let tachoCount = 0;
 motors.largeA.reset()
 motors.largeA.run(50)
 pause(10000)
-tachoCount = motors.largeA.tacho()
+tachoCount = motors.largeA.angle()
 motors.largeA.clearCounts()
 motors.largeA.run(50)
 pause(10000)
-if (tachoCount == motors.largeA.tacho()) {
+if (tachoCount == motors.largeA.angle()) {
     brick.showString("Motor turns equal.", 1)
 } else {
     brick.showString("Motor turns NOT equal.", 1)

docs/reference/motors/motor/tacho.md

@@ -1,48 +0,0 @@
-# tacho
-
-Get the current number of degress of rotation.
-
-```sig
-motors.largeA.tacho()
-```
-
-The motors that come with your @boardname@ have a way to detect their own turning motion. They count the amount of motor rotation in degrees. The motor will count each degree of angle rotation up to 360 degrees for a full rotation. As the motor continues to turn, the _tacho_ count keeps adding up the degrees even past one full rotation. So, if the motor makes 3 complete rotations, the count will be 1080.
-
-The name _tacho_ comes from the first part of the word [tachometer](https://en.wikipedia.org/wiki/Tachometer) which is a device to measure how fast something is turning. The motor controller in the brick uses the tacho count to regulate the motor's speed.
-
-## ~hint
-
-**Measure RPM**
-
-A standard way to know how fast a motor is turning is by measuring its _revolutions per minute_ (rpm). One revolution is the same thing as a rotation, or one turn. How do you measure rpm? Well, here's a simple way:
-
-1. Record the current tacho count
-2. Run the motor for 60 seconds
-3. Get the tacho count again
-4. Subtract the first tacho count from the second one
-5. Divide that number by `360`
-
-## ~
-
-## Returns
-
-* a [number](/types/number) which is the total count of degrees of rotation that the motor has turned since it was first started or reset.
-
-## Example
-
-Run the motor connected to port **A** at half speed for 5 seconds. Display the number of full rotations on the screen.
-
-```blocks
-motors.largeA.run(50)
-pause(5000)
-motors.largeA.stop()
-brick.showString("Motor rotations:", 1)
-brick.showNumber(motors.largeA.tacho() / 360, 3)
-motors.largeA.run(50)
-```
-
-## See also
-
-[angle](/reference/motors/motor/tacho), [speed](/reference/motors/motor/speed),
-[set regulated](/reference/motors/motor/set-regulated),
-[reset](/reference/motors/motor/reset), [clear counts](/reference/motors/motor/clear-counts)

libs/core/output.ts

@@ -378,21 +378,6 @@ namespace motors {
             return getMotorData(this._port).count;
         }
 
-
-        /**
-         * Gets motor tachometer count.
-         * @param motor the port which connects to the motor
-         */
-        //% blockId=motorTachoCount block="%motor|tacho"
-        //% weight=69
-        //% blockGap=8
-        //% group="Counters"
-        //% help=motors/motor/tacho
-        tacho(): number {
-            this.init();
-            return getMotorData(this._port).tachoCount;
-        }
-
         /**
          * Clears the motor count
          */