HC-SR04 Board Mount with LED

thingiverse

Thanks greatly for crafting the original. Modified a couple of things, adding an LED that's connected directly to the echo pin (with a current limiter in line). It will flash the same duration as the echo pin is pulled high, so brief distance bounces will create a very short flicker on the LED. Oscilloscope screenshots are of the echo pulse. The other method to add an LED is to let the microcontroller control it; that way you're not reliant on the echo time. I only have 4 wires in the cable (used for Vcc, Gnd, Trig and Echo), so this is the most straightforward approach, though it's possible to make the Trig and Echo share the same wire. Added a bit more depth to accommodate the extra wiring, and small slots to use zip strips for mounting. Part of my Garage home automation project, https://www.thingiverse.com/thing:2771892