3 files changed, 33 insertions, 8 deletions
diff --git a/robot/problems/introduction/circle20/common.py b/robot/problems/introduction/circle20/common.py
index 879f198..4d283d0 100644
--- a/robot/problems/introduction/circle20/common.py
+++ b/robot/problems/introduction/circle20/common.py
@@ -10,14 +10,11 @@ number = 5
 visible = True
 
 solution = '''\
-from ev3dev import *
-from mindstorms_widgets import mindstorms_widgets
-
 robot = mindstorms_widgets()
 robot.connect_motor( 'left' )
 robot.connect_motor( 'right' )
 
-fct = 9 # full circle time
+fct = 8.9 # full circle time
 rad = 20 # Direction to make a good radius for the circle
 robot.move_steering( 'on_for_seconds', direction=rad, power=40, seconds=fct )
 '''
diff --git a/robot/problems/introduction/circle20/en.py b/robot/problems/introduction/circle20/en.py
index 8210d71..d2c410c 100644
--- a/robot/problems/introduction/circle20/en.py
+++ b/robot/problems/introduction/circle20/en.py
@@ -1,14 +1,32 @@
 # coding=utf-8
 import server
-mod = server.problems.load_language('python', 'en')
+mod = server.problems.load_language('robot', 'en')
 
 id = 205
 name = 'Circle 20 cm'
 slug = 'Circle 20 cm'
 
 description = '''\
-'''
+<p>Write a program that will make the robot drive in circle (r=20cm) and stop after one loop.</p>'''
 
 hint = {
-    
+   'mW_init':mod.hint['init'],
+   'connectMotorLeft':mod.hint['connectMotorLeft'],
+   'connectMotorRight':mod.hint['connectMotorRight'],
+   'moveSteering':mod.hint['moveSteering'],
+   'onForSeconds':mod.hint['onForSeconds'],
+   'direction':mod.hint['direction']+['''<p>The value of this parameter should be such that would make the robot circle with radius 20cm. This value highly depends on the construction of the robot.</p>''',
+                 '''<p><code>robot.move_steering( 'on_for_seconds', direction=20, ... )</code>.</p>'''],
+   'seconds':mod.hint['seconds']+['''<p>Experimentally determine the time (in seconds) the robot needs for one loop.</p>''',
+               '''<p><code>robot.move_steering( 'on_for_seconds', direction=0, seconds=3 )</code>.</p>'''],
 }
+
+plan = ['''\
+<p>The program should:</p>
+<ol>
+  <li>create a mindstorms_widgets() object, which represents the robot in your code.</li>
+  <li>connect the driving motors.</li>
+  <li>calculate the turn so that the robot would drive in circle with radius 20 cm.</li>
+  <li>synchronize the motors and run them for a specified time, so that the robot stops after one round.</li>
+</ol>'''
+]
diff --git a/robot/problems/introduction/circle20/sl.py b/robot/problems/introduction/circle20/sl.py
index 219f9c7..735458a 100644
--- a/robot/problems/introduction/circle20/sl.py
+++ b/robot/problems/introduction/circle20/sl.py
@@ -13,7 +13,7 @@ hint = {
                  '''<p><code>robot.connect_motor( 'left' )</code>.</p>'''],
     'connectMotorRight':['''<p>Robotu priključi desni motor</p>''',
                  '''<p><code>robot.connect_motor( 'right' )</code>.</p>'''],
-    'moveSteering':['''<p>Sinhroniziraj motorja in ju zaženi za 3 sekunde.</p>''',
+    'moveSteering':['''<p>Sinhroniziraj motorja.</p>''',
                     '''<p>Za sinhronizirano vožnjo je najbolj primerna metoda <code>robot.move_steering( ... )</code>.</p>'''],
     'onForSeconds':['''<p>Prvi argument metode <code>robot.move_steering</code> naj pove, da bo delovanje motorjev časovno omejeno.</p>''',
                     '''<p><code>robot.move_steering('on_for_seconds', ... )</code>.</p>'''],
@@ -24,3 +24,13 @@ hint = {
                '''<p>Za dani polmer izmeri čas, ki ga robot potrebuje za en obhod.</p>''',
                '''<p><code>robot.move_steering( 'on_for_seconds', direction=0, seconds=3 )</code>.</p>'''],
 }
+
+plan = ['''\
+<p>Program izvedemo v naslednjih korakih:</p>
+<ol>
+  <li>Naredimo objekt mindstorms_widgets(), s katerim predstavimo robota.</li>
+  <li>Nanj povežemo oba pogonska motorja.</li>
+  <li>Izračunamo ostrino zavoja, pri kateri bo robot vozil po krogu s polmerom 20 cm.</li>
+  <li>Sinhronizirano poženemo oba motorja za premik v izračunani smeri in časovno omejimo na en obhod.</li>
+</ol>'''
+]