Test direct show seeking

How to test that DirectShow seeking do not crash or hang your filter? You can use AutoIt and graphstudionext seek menu to seek to the troublesome position.

Using cheap water flow sensor for getting water flow level instead of just on/off threshold. FSC-GL1

FSC-GL1 is cheap water flow sensor. Originally it is used with just LED indicator with just 6 levels

 

but with digital processing it is possible to obtain numeric value from it. Though signal is very noisy, and thus not precise.

 And also non linear.


Output vs water flow%

Resulting calibration plot:

ADC raw value vs water l/min

 

 

Output distribution. l/min vs rate

The distribution is normal. Around 10% which is ok for non sensitive applications.