Revision 5:2ee478a71b6b, committed 2013-11-04

Comitter:

ansond

Date:

Mon Nov 04 17:39:12 2013 +0000

Parent:

4:c82d5978d626

Child:

6:446635b12af2

Commit message:

added instructions

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/README.txt	Mon Nov 04 17:39:12 2013 +0000
@@ -0,0 +1,34 @@
+Instructions:
+
+1). Complete the “hands-on” exercises first
+    - Required to get setup with an mbed account and the compiler environment
+
+2). Import the “df-2013-minihack-slingshot” project into your mbed project workspace
+    - Be sure to add and make current the “mbed LPC11U24” board as the current board 
+      to compile to. 
+
+3). Examine main.cpp in your project
+    - In the top of the file, examine the “Mini-hack challenge” statement 
+    - You will need to update potentiometer_value_to_degrees() per the instructions. 
+      The function starts at or about line 129. 
+
+A successful implementation will:
+    - Calculate a reasonable approximation of the sling angle to the sling body
+    - Utilize the sling angle to the overall angle that is used for the firing trajectory.
+
+Additional Details/Hints:
+    - If  slingshot band is exactly 90° (   = 0°)   to the slingshot body then the original 
+      slingshot mouse location method may be used
+      
+    - If the slingshot band is not 90° to the slingshot body, then further refinement of the 
+      mouse position should be made through calculating the relative angle between the 
+      slingshot body and the slingshot band using the potentiometer
+      
+    - The relative angle is estimated by mapping ranges of values of the potentiometer to a 
+      degree range. A median potentiometer value denotes that the sling band is 90 degrees 
+      to the sling body.
+
+References:
+    - Original MBED slingshot cookbook:  http://mbed.org/cookbook/Slingshot
+    - Project Source:  http://mbed.org/teams/MBED_DEMOS/code/df-2013-minihack-slingshot/ 
+    - Completed Code: http://mbed.org/teams/MBED_DEMOS/code/df-2013-minihack-slingshot-complete/