Ultrasonic with InvIoT U1, an arduino compatible board

Описание: Ultrasonic has 4 pins. I get the 5v by setting the pin D4 high and I get the ground by setting the D7 low. Then I got the pins D5 and D6 for trigger and echo.
Code is simple. I use the LCD display of the U1 board.
The only extra that I use is the buzzer so I get a warring if is less the 10cm, and the RGB Led to get a different color depending of the distance.


https://www.kickstarter.com/projects/...

http://www.inviot.com