diff --git a/.travis.yml b/.travis.yml
index 08b12ffb..af38511e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,4 +14,5 @@ cache:
   directories:
     - node_modules
     - built/cache
+    - libs/hello/built/cache
 
diff --git a/docs/reference/pins/analog-pitch.md b/docs/reference/pins/analog-pitch.md
index b229875c..d42308b9 100644
--- a/docs/reference/pins/analog-pitch.md
+++ b/docs/reference/pins/analog-pitch.md
@@ -1,6 +1,6 @@
 # Analog Pitch
 
-Emits a Pulse With Modulation (PWM) signal to the current pitch [pin](/device/pins). Use [analog set pitch pin](/reference/pins/analog-set-pitch-pin) to set the pitch pin.
+Emits a Pulse With Modulation (PWM) signal to the current pitch [pin](/device/pins). Use [analog set pitch pin](/reference/pins/analog-set-pitch-pin) to set the current pitch pin.
 
 ```sig
 pins.analogPitch(440, 300)
diff --git a/docs/reference/pins/analog-read-pin.md b/docs/reference/pins/analog-read-pin.md
index c9b87526..35ded767 100644
--- a/docs/reference/pins/analog-read-pin.md
+++ b/docs/reference/pins/analog-read-pin.md
@@ -28,9 +28,7 @@ basic.forever(() => {
 
 #### ~hint
 
-If you are using **analog read pin** with another micro:bit
-running **analog write pin**, it is a good idea to check
-**analog read pin** many times and then take an average.
+If you are using **analog read pin** with another micro:bit running **analog write pin**, then things can get tricky. Remember that the micro:bit that runs **analog set pin** writes 0's and 1's at a very high frequency to achieve an average of the desired value. Sadly, if you try to read that average from another micro:bit, then the micro:bit will either read 0 or 1023. You could try to read a higher number of values (e.g. a million) in a loop, then computer then average. Alternatively, you can plug in a capacitor in-between the two micro:bits.
 
 #### ~
 
diff --git a/package.json b/package.json
index ad22fb76..4014b12b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pxt-microbit",
-  "version": "0.2.186",
+  "version": "0.2.190",
   "description": "BBC micro:bit target for PXT",
   "keywords": [
     "JavaScript",
@@ -29,6 +29,6 @@
     "typescript": "^1.8.7"
   },
   "dependencies": {
-    "pxt-core": "0.2.194"
+    "pxt-core": "0.2.200"
   }
 }