DAC0808 on Arduino Uno

i have a DAC circuit and arduino uno…

i want to test the DAC circuit, but the output is 0V.
i am using port 2-9 on PWM arduino uno , and set pinMode to HIGH.

here the circuit of DAC, as the picture i attach.

VCC = 5V
VEE = -15V
Vref = i have 12V and 15V…

but the output of DAC is still 0V, can you help me ?

Do you have a common ground between the Arduino and the DAC? These pins are set to OUTPUT? Where is the sketch?

LarryD: Do you have a common ground between the Arduino and the DAC? These pins are set to OUTPUT? Where is the sketch?

  • i just connect 8bit from arduino to DAC, i dont connect the ground, how can i connect that ?
  • i already set pins to OUTPUT.
  • i am build the same as the picture i attach on post #1..

|500x281

i want to connect 8bit from arduino to DAC0808 circuit, but the output is 0V..

here the arduino code

void setup() {
  // put your setup code here, to run once:

  Serial.begin(38400);
  Serial.println("Starting up");
pinMode(0,OUTPUT);
pinMode(1,OUTPUT);
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
pinMode(5,OUTPUT);
pinMode(6,OUTPUT);
pinMode(7,OUTPUT);





}

void loop() {
  // put your main code here, to run repeatedly:


digitalWrite(2,LOW);
digitalWrite(3,HIGH);
digitalWrite(4,LOW);
digitalWrite(5,LOW);
digitalWrite(6,LOW);
digitalWrite(7,LOW);
digitalWrite(8,LOW);
digitalWrite(9,LOW);



}

Add a wire from the Arduino GND (0volt) pin, to pin 2 of the DAC.

:sleeping: Time

LarryD: Add a wire from the Arduino GND (0volt) pin, to pin 2 of the DAC.

:sleeping: Time

then ? what should i do ?

You should try it again once you have connected the wire.

The emoticon was telling you he was going to go to bed.