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obsolete IMGUR as image hoster (#448) 

* obsolete IMGUR as image hoster

* obsolete IMGUR as image hoster

* Delete trigger_VR_sensor_wrong_polarity..png

incorrect ".." in file name
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8
Trigger-Configuration-Guide.md
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@ -33,11 +33,11 @@ To inspect the missing tooth signal's shape:
**This is the correct missing tooth shape** **This is the correct missing tooth shape**
![correct VR missing tooth pattern](https://i.imgur.com/x3AK5sU.jpg) ![correct VR missing tooth pattern](Images/trigger_VR_sensor_correct_polarity.png)
**This is the wrong missing tooth shape - swap your wires** **This is the wrong missing tooth shape - swap your wires**
![wrong VR sensor missing tooth pattern](https://i.imgur.com/rJRJWP7.jpg) ![wrong VR sensor missing tooth pattern](Images/trigger_VR_sensor_wrong_polarity.png)
> These images were collected on a Volvo 60-2 trigger wheel, the exact timing may vary, but a long period of low preceding the long high time (marked with arrow on the wrong image) is the clear indicator of a mis-wired sensor. The correct pattern is equally sized low periods, with a single long high period. > These images were collected on a Volvo 60-2 trigger wheel, the exact timing may vary, but a long period of low preceding the long high time (marked with arrow on the wrong image) is the clear indicator of a mis-wired sensor. The correct pattern is equally sized low periods, with a single long high period.
@ -66,13 +66,13 @@ The green trace is the analog input to the MAX9924, and pink is the digital outp
First, here's the wrong polarity: First, here's the wrong polarity:
< wrong polarity scope image > ToDo: add wrong polarity scope image
The output rising edge is well aligned to the falling edge zero crossing of the input, but that's the poorly-defined center of the missing tooth, not the sharp edges of the teeth. The output rising edge is well aligned to the falling edge zero crossing of the input, but that's the poorly-defined center of the missing tooth, not the sharp edges of the teeth.
And here's the correct polarity And here's the correct polarity
< correct polarity scope image > ToDo: add correct polarity scope image
Now the "bad edge" of the missing tooth is a rising edge, and the good tooth centers are falling edges, which output a digital rising edge to the ECU. Now the "bad edge" of the missing tooth is a rising edge, and the good tooth centers are falling edges, which output a digital rising edge to the ECU.