This is a simple project on mbed, developed by NPNLab team The led is turned on for 1s and off for 1s then, repeated.

Dependencies:   mbed

Revision:
0:50ed51be7a14
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jun 23 06:09:11 2017 +0000
@@ -0,0 +1,12 @@
+#include "mbed.h"
+
+DigitalOut myled(LED1);
+
+int main() {
+    while(1) {
+        myled = 1; // LED is ON
+        wait(1); // 2 s
+        myled = 0; // LED is OFF
+        wait(1); // 2 s
+    }
+}
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