[arm-allstar] Troubleshooting Fan Control Script

[csmart8 at cogeco.ca]

Oops. I forgot to include the output of 
gpio readall

I'm blind, so if you can, imagine a robotic voice reading each line of this
left to right. i.e. I don't hear it in columns as you see it visually...
yeah, fun stuff eh?

+-----+-----+---------+------+---+---Pi
4B--+---+------+---------+-----+-----+
 | BCM | wPi |   Name  | Mode | V | Physical | V | Mode | Name    | wPi |
BCM |
 
+-----+-----+---------+------+---+----++----+---+------+---------+-----+----
-+
 |     |     |    3.3v |      |   |  1 || 2  |   |      | 5v      |     |
|
 |   2 |   8 |   SDA.1 |   IN | 1 |  3 || 4  |   |      | 5v      |     |
|
 |   3 |   9 |   SCL.1 |   IN | 1 |  5 || 6  |   |      | 0v      |     |
|
 |   4 |   7 | GPIO. 7 |   IN | 1 |  7 || 8  | 1 | IN   | TxD     | 15  | 14
|
 |     |     |      0v |      |   |  9 || 10 | 1 | IN   | RxD     | 16  | 15
|
 |  17 |   0 | GPIO. 0 |   IN | 1 | 11 || 12 | 1 | OUT  | GPIO. 1 | 1   | 18
|
 |  27 |   2 | GPIO. 2 |   IN | 0 | 13 || 14 |   |      | 0v      |     |
|
 |  22 |   3 | GPIO. 3 |   IN | 0 | 15 || 16 | 0 | IN   | GPIO. 4 | 4   | 23
|
 |     |     |    3.3v |      |   | 17 || 18 | 0 | IN   | GPIO. 5 | 5   | 24
|
 |  10 |  12 |    MOSI |   IN | 0 | 19 || 20 |   |      | 0v      |     |
|
 |   9 |  13 |    MISO |   IN | 0 | 21 || 22 | 0 | IN   | GPIO. 6 | 6   | 25
|
 |  11 |  14 |    SCLK |   IN | 0 | 23 || 24 | 1 | IN   | CE0     | 10  | 8
|
 |     |     |      0v |      |   | 25 || 26 | 1 | IN   | CE1     | 11  | 7
|
 |   0 |  30 |   SDA.0 |   IN | 1 | 27 || 28 | 1 | IN   | SCL.0   | 31  | 1
|
 |   5 |  21 | GPIO.21 |   IN | 1 | 29 || 30 |   |      | 0v      |     |
|
 |   6 |  22 | GPIO.22 |   IN | 1 | 31 || 32 | 0 | IN   | GPIO.26 | 26  | 12
|
 |  13 |  23 | GPIO.23 |   IN | 0 | 33 || 34 |   |      | 0v      |     |
|
 |  19 |  24 | GPIO.24 |   IN | 0 | 35 || 36 | 0 | IN   | GPIO.27 | 27  | 16
|
 |  26 |  25 | GPIO.25 |   IN | 0 | 37 || 38 | 0 | IN   | GPIO.28 | 28  | 20
|
 |     |     |      0v |      |   | 39 || 40 | 0 | IN   | GPIO.29 | 29  | 21
|
 
+-----+-----+---------+------+---+----++----+---+------+---------+-----+----
-+
 | BCM | wPi |   Name  | Mode | V | Physical | V | Mode | Name    | wPi |
BCM |
 +-----+-----+---------+------+---+---Pi
4B--+---+------+---------+-----+-----+

I'm listening for PWM, and not hearing it anywhere in that mess.

I assume any mention f V refers to voltage, RX is receive and TX is
transmit? CLK is probably clock?