RESISTOR COLOUR CODES
=====================

 COLOUR | 1ST | 2ND |  3RD  | 4TH
--------+-----+-----+-------+-----
   black|  0  |  0  |  x1   |  -
   brown|  1  |  1  |  x10  | 1%
     red|  2  |  2  | x100  | 2%
  orange|  3  |  3  |  x1k  | 3%
  yellow|  4  |  4  | x10k  | 4%
   green|  5  |  5  | x100k |  -
    blue|  6  |  6  |  x1M  |  -
  violet|  7  |  7  |   -   |  -
    grey|  8  |  8  |   -   |  -
   white|  9  |  9  |   -   |  -
    gold|  -  |  -  |  x.1  | 5%
  silver|  -  |  -  | x.01  | 10%
--------------+-----+-------------
         _____|     |______
        | 1st | 1st digit  |
        | 2nd | 2nd digit  |
        | 3rd | multiplyer |
        | 4th | tolerance  |
         ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
      .----------------------.
      |---SCIENTIFIC-UNITS---|
      +----------------------+
      |   k = kilo = 1.000   |
      | M = mega = 1.000.000 |
      '----------------------' 
——————————————————————————————————
Example:
           1 |2 |3  | 4
          .———._____.———.
         ( br|gr|br | gd )
          `———´¯¯¯¯¯`———´
           1 |5 |x10| 5%

= 150 ohm with a tolerance of 5%