Memsic 2125 code?

[Ramius]

Thanks Walter! You are the best! Ed

[Ramius]

Hi Walter and everyone!
Okay so I corrected the code in the Read_X_Force as the "return" caused the program to stop and the formula said to divide by 8 not multiply. With the digital scope I was able to know the exact timing of the pulses. The catch is that the devide puts out a pulse reading from 1810 to 3132 so the formula does not work. I attached word files to show the code, what the pulse measurement is at level, what the code does with level and what the code does with the device at +90 degrees (up) and -90 degrees (down). The original code uses 10 ms and the scope says it is 9.9 ms so rather than x2 I made it x20 to divide by 99. The problem with the code seems to be with the 50% duty cycle value? Please let me know what you think. Thanks, Ed


Pulse Widths.doc
Tilt Code.doc
UP.doc
Level.doc
Down.doc

[ScaleRobotics]

Okay so I corrected the code in the Read_X_Force as the "return" caused the program to stop and the formula said to divide by 8 not multiply.

Ed, are you refering to the place in the formula where there was a /12.5% ? If so, this is simplified by *8.

See this part of the previously attached document:
"Since our T1 time is in microseconds and there are 1000 microseconds in a millisecond, we need
to multiply the T2 value and 0.5 by 1000 to adjust the equation. This makes the math easy for the
Stamp and gives us an output with a resolution of 0.001g. Finally, the divide by 12.5% part of the
equation is converted to multiplying by eight ( 1 / 0.125 = 8 ) – we couldn't ask for a value much
more convenient than that."