Room echo calculator

Dependencies:   Adafruit-GFX-MbedOS6 Adafruit_SSD1331_MbedOS6

Revision:
1:2b95f921e7f2
diff -r 33edf726559b -r 2b95f921e7f2 Adafruit-GFX-MbedOS6.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Adafruit-GFX-MbedOS6.lib	Mon May 03 16:25:02 2021 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/timo_k2/code/Adafruit-GFX-MbedOS6/#27c133247105