Distance sensing with Arduino and HC-SR04
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README.md
distance_to_8x8matrix_final.ino

README.md

sounddistance

Distance sensing with Arduino and HC-SR04

Using a Arduino Nano (clone) to read distances using the HC-SR04 distance sensor and outputting the results (as proximity "image") on a MAX7219 based 8x8 LED matrix display.

Actual project writeup with images, parts and wiring can be read here: http://elmeranta.fi/blog/2016/03/distance-sensor-with-led-matrix-display-on-arduino-nano/

Put the sketch (.ino) into a directory (of the same name) and load up into the Arduino compiler.