Go Down

Topic: Ultrasonic sensor for art installation (Read 160 times) previous topic - next topic


i! I need help with an art installation.
I want to use an ultrasonic sensor to turn on and off 5 leds (the leds turns on as you approach the sensor).

I already have the programming and it works with low power leds but I want to use high power leds and I donĀ“t know how to make the circuit.

My leds are 1w so they need like 300Ma. I want to use external power. 12 volts from a ac/dc converter.

Do you have any idea how the circuit would work with the external power?


Do the LEDs just turn on/off or do they use PWM to modify the brigtness?

If it's the former you'd be fine with any 12v relay: https://www.google.co.uk/search?q=arduino+12v+relay

Or there are transistor circuits that would do the job too.

Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131