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Arduino Forum DS1804 (100k) produces a lot of noise
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  • noise
  • DS1804
Related

DS1804 (100k) produces a lot of noise

Ricodora
Ricodora over 1 year ago

Hello people!
The volume goes up and down correctly. The lower the volume, the more noise it produces.

DS1804 has 100 positions:

In positions [80,99] it does not produce noise (I do not hear it)
[70-80) -> produces a little noise
[60-70) -> more noise
[50-60) -> even more noise
...
[10-20) -> a lot of distortion

The component is original purchased from "Mouser Electronic".

Component Detail anda Data Sheet

I use a constant 5v power supply, I don't use USB-C

I have 2 units of DS1804, they both do the same thing.

<code>

#include <DS1804.h>

#define increment 14
#define select 33
#define up_down 27

// DS1804( byte CSpin, byte INCpin, byte UDpin, unsigned long maxResistance )
DS1804 digipot = DS1804( select, increment, up_down, DS1804_HUNDRED );

void setup() {
Serial.begin(9600);
digipot.setToZero();
}

void loop() {
if ( Serial.available() > 0 ) {
int position = Serial.parseInt();
if (position > 0) {
digipot.setWiperPosition(position);
}
}
}

</code>

image

Any ideas? Thank you

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Top Replies

  • michaelkellett
    michaelkellett over 1 year ago in reply to Ricodora +4
    The XC9503 is expensive because it has an analogue signal range of +/- 8V while operating froma single rail 5V supply. That's why it works. You can use the DS1804 but you will need input capacitors…
  • michaelkellett
    michaelkellett over 1 year ago +2
    There are problems with your circuit. The audio signal going in will usually swing both positive and negative with respect to GND. But the data sheet for the 1804 says: H - High-Terminal Potentiometer…
  • dougw
    dougw over 1 year ago +1
    Is it white noise or a tone?
Parents
  • dougw
    0 dougw over 1 year ago

    Is it white noise or a tone?

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  • dougw
    0 dougw over 1 year ago

    Is it white noise or a tone?

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