It's an obstacle avoider using mbed lpc1768

Dependencies:   mbed Motordriver HC_SR04_Ultrasonic_Library

Revision:
0:3c1eead7416c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HC_SR04_Ultrasonic_Library.lib	Fri Dec 13 02:22:49 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/ejteb/code/HC_SR04_Ultrasonic_Library/#e0f9c9fb4cf3