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Recent content by maoterk

  1. M

    Choppy output on TDC chip (max35101)

    The excitation signals are of the correct frequency and the series resistors are matched. I 'll rethink the power supply and see if anything is fixed. thanks
  2. M

    Choppy output on TDC chip (max35101)

    I am probing at the transducer. The "good" output is just the pulses from the chip with the transducer disconnected. When I connect it I get somewhat of a sinusoidal signal but a bit choppy.
  3. M

    Choppy output on TDC chip (max35101)

    I am trying to build an ultrasonic flow meter with the TDC max35101 and have come upon an issue. When i connect the ultrasonic transducers to the chip, the output pulses are a bit choppy (pic1) generating wrong measurements on the receiver side. It should be a smooth sinusoidal signal so that...
  4. M

    #use delay(clock=4000000) wrong output at leds

    If i use #use delay(clock=8000000) it works correctly. So can't i use a faster clock with the internal oscillator? thanks
  5. M

    #use delay(clock=4000000) wrong output at leds

    I am using ccs compiler and the internal oscillator. I am not sure about the maximum delay value thanks for the response
  6. M

    #use delay(clock=4000000) wrong output at leds

    Hi, i'm new at programming and i tried this easy code for flashing leds with dspic33e usb starter kit, but it seems to take around 5 seconds to flash rather than 1 Any suggestions? #include <33EP512MU810.h> #use delay(clock=40000000) #byte PORTD=0xF81 void main() { set_tris_d(0x00); WHILE...
  7. M

    zero crossing detection code question

    I would like to do zero crossing detection on a 50Hz signal to fire triacs. Would this code work? #include <33EP512MU810.h> #use delay(clock=4000000) #byte PORTD=0xF81 #byte PORTB =0xF83 void init_all (void); float32 sin; int VCC=5; void main() { init_all(); WHILE (TRUE){...
  8. M

    AVDD-AVSS for dsPIC33E USB Starter Kit

    Hey, First of all i am using the dsPIC33E USB Starter Kit. If i want to use the rails (Vdd-Vss) for adc should i just connect AVDD to Vdd and AVSS to Vss? Or are they connected internally (not mentioned in the datasheet)? And how about the multiple couples of Vdd/Vss provided? Do i leave...
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