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hi,
i'm building an H bridge with 4n mosfet IRFIZ44NPbF 55 Vds and 31A Id.
I'm using a dspic 15khz pwm for drive hip4081.
-i blow 5 hip and finally it work with a 12V 1A (no load) DC motor ( it's the motor for electric car glass).
-I used...
hi when relase all key assume the value that i declare in the main key=0 pwm=50%...if i delcare key=-1 it assume pwm<50% (because pos_desiderata<pos_misurata=0)
I noted this:
when I'm in simulation the pwm track on the oscilloscope is always active.
after I flashed the pwm is freezed and...
thanks.
i used columns as input and used port B with pullup resistores. nothing pin collegate to 5V.
it works but not properly. i have this problem now:
when i touch oscilloscope ground or touch with fingers the pins of columns or rows and press button it "work" pwm keep hold at new value...
the rows outputs scoped with oscilloscope is the same of mplab sim:
the columns are connected at the pins of dspic and a 5V with 100k resistence like this:
i scoped its and there is 5V every times
i cancel also saved-.key variable isert because i thinkes tath was a problem of the variable...
hi,
i want use keypad for dicrete variation of dc motor.
my problem is:
when i hold dow button all work good. (pwm change)
when i relase button stop of work.
i did the on-board debbugger with pickit3 and mplab x....all work good button keep hold and pwm keep hold at the new value, but...
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