Code description 3

[kidostrike]

Add the description to the following methods in the arduino into the wiki. verify if the comments in the arduino code are correct. Put it in this format:
Name of method
description
parameters (name, data type, description)
returns (type and description)

ex: http://www.protractortest.org/#/api?view=ProtractorBrowser.prototype.setLocation
fill out as best you can, use markdown

• adcread
• shaker_stop
• lower_platform
• lcdprint
• trimStringEndToTwentyChars
• set_LCD_Color
• system_pause
• checkFourChannelFlag
• eight_channel_isr