I want to control the AD5290 digital potentiometer,with arduino uno

Projects Programming
21

This will do it:

#include <SPI.h>

// set pin 10 as the slave select for the digital pot:
const int slaveSelectPin = 10;

// Set the pot value to 2K
// value = 255 *(2K/10K)
byte value = 51;

void setup() 
{
  // set the slaveSelectPin as an output:
  pinMode(slaveSelectPin, OUTPUT);
  
	// initialize SPI:
  SPI.begin();
  SPI.beginTransaction(SPISettings(1000000, MSBFIRST, SPI_MODE0));
  
	// Send the value
	digitalWrite(slaveSelectPin, LOW);
  delay(5);
  SPI.transfer(value);
  delay(5);
  digitalWrite(slaveSelectPin, HIGH);
}

void loop() 
{
 
}
22

Note that the voltage on the terminals of most digital pots must stay within the limits of VCC/GND of the chip, which is not always the case if you measure with a DMM or connect the pot to another circuit.
Leo..

23

thank u sir for your cooperation towards my problem.

24

thank you for the information.