help in making a robot car with the use of arduino uno with four motor that can stop and lights on and beeper give the sound when obstetrical comes in front of ultrasonic sensor please help me with the code and circuit diagram.
Hey,
Here’s a link to get started with the circuit for your project. The test code that you’ll receive from circuito.io will help you test your components. For more advanced coding help, you can either search for a similar project online (there are lots), or maybe one of our community members can help you with this 
My recommendation is to start with the hardware and work your way up.
Good luck!
Anat from circuito.io
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Thank you for your help.