HC-SR04 sonarsensor with display. (distance sensor)

the arduino program cannot connect to the board hence the HC-SR04 connected. Any ideas?

Circuit link;http://www.instructables.com/id/Ultrasonic-distance-meter-with-LCD-display-on-Ardu/?ALLSTEPS

Yes, I have an idea. Please show us a photo of your wiring.

the arduino program cannot connect to the board

The Arduino program can't connect to what board?

What Arduino program?

Does it work if you unplug all the hardware from the Arduino? If not, your Arduino is at fault. If so, your wiring is at fault.

johnwasser:
Does it work if you unplug all the hardware from the Arduino? If not, your Arduino is at fault. If so, your wiring is at fault.

once sonarsensor is disconnected board is detectable with arduino

Which pins are you using for the trigger and echo connections of the ultrasonic sensor?
If you're using pins 0 and/or 1, the connections will most likely be interfering with the Arduino's serial communications. (I'm assuming that you're using an UNO or Mega.)

Anthropous:

johnwasser:
Does it work if you unplug all the hardware from the Arduino? If not, your Arduino is at fault. If so, your wiring is at fault.

once sonarsensor is disconnected board is detectable with arduino

So... Your wiring is at fault. How is everything connected?