I am really new with Arduino and I am working with an HC-SR04 Sensor. The project I am working with has LED lights blinking when the sensor is close to someone. I found a code that works perfect except that the lights blink before someone is close, but blink faster when someone is closer to the sens…

HC-SR04 Sensor with LED lights

CrossRoads April 15, 2018, 11:46pm 2

You have two of setup() and two of loop().

You can only have 1. Combine them and delete 1 of each.

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