diff --git a/examples/wiring-blink/platformio.ini b/examples/wiring-blink/platformio.ini
index 33d4a63f..b079b0f6 100644
--- a/examples/wiring-blink/platformio.ini
+++ b/examples/wiring-blink/platformio.ini
@@ -1,15 +1,17 @@
-;
 ; Project Configuration File
-;
-; A detailed documentation with the EXAMPLES is located here:
-; http://docs.platformio.org/en/latest/projectconf.html
-;
+; Docs: http://docs.platformio.org/en/latest/projectconf.html
 
 [env:uno]
 platform = atmelavr
 framework = arduino
 board = uno
 
+[env:nodemcu]
+platform = espressif
+framework = arduino
+board = nodemcu
+build_flags = -D LED_BUILTIN=BUILTIN_LED
+
 [env:teensy31]
 platform = teensy
 framework = arduino
@@ -19,9 +21,4 @@ board = teensy31
 platform = timsp430
 framework = energia
 board = lpmsp430g2553
-
-[env:lptm4c1230c3pm]
-platform = titiva
-framework = energia
-board = lptm4c1230c3pm
-build_flags = -DLED_PIN=GREEN_LED
+build_flags = -D LED_BUILTIN=RED_LED
diff --git a/examples/wiring-blink/src/main.cpp b/examples/wiring-blink/src/main.cpp
index b1017a5e..ba4a75de 100644
--- a/examples/wiring-blink/src/main.cpp
+++ b/examples/wiring-blink/src/main.cpp
@@ -1,21 +1,25 @@
-#ifdef ENERGIA
-	#include "Energia.h"
-#else
-	#include "Arduino.h"
-#endif
+/*
+ * Blink
+ * Turns on an LED on for one second,
+ * then off for one second, repeatedly.
+ */
 
-#ifndef LED_PIN
-	// Most Arduino boards already have a LED attached to pin 13 on the board itself
-	#define LED_PIN 13
-#endif
+#include "Arduino.h"
 
-void setup() {
-  pinMode(LED_PIN, OUTPUT);     // set pin as output
+void setup()
+{
+  // initialize digital pin 13 as an output.
+  pinMode(LED_BUILTIN, OUTPUT);
 }
 
-void loop() {
-  digitalWrite(LED_PIN, HIGH);  // set the LED on
-  delay(1000);                  // wait for a second
-  digitalWrite(LED_PIN, LOW);   // set the LED off
-  delay(1000);                  // wait for a second
+void loop()
+{
+  // turn the LED on (HIGH is the voltage level)
+  digitalWrite(LED_BUILTIN, HIGH);
+  // wait for a second
+  delay(1000);
+  // turn the LED off by making the voltage LOW
+  digitalWrite(LED_BUILTIN, LOW);
+   // wait for a second
+  delay(1000);
 }