diff --git a/src/FeatherPins.h b/src/FeatherPins.h
index 9daa56e..458c5e2 100644
--- a/src/FeatherPins.h
+++ b/src/FeatherPins.h
@@ -25,20 +25,20 @@
  *  
  ********************************************************************************/
 
-// For developer use and testing only - provides a common set of pin numbers mapped to the Adafruit Feather Board
+// For developer use and testing only - provides a common set of pin numbers mapped to the Adafruit Feather Board.
 // Facilitates the testing of identical code on an ESP32, ESP32-S2, and ESP32-C3 using a common jig without rewiring
 
 #pragma once
 
-#if defined(CONFIG_IDF_TARGET_ESP32)
+#if defined(ARDUINO_FEATHER_ESP32)
   enum {F13=13,F12=12,F27=27,F33=33,F15=15,F32=32,F14=14,F22=22,F23=23,F26=26,F25=25,F34=34,F39=39,F36=36,F4=4,F5=5,F18=18,F19=19,F16=16,F17=17,F21=21};
   #define DEVICE_SUFFIX ""
 
-#elif defined(CONFIG_IDF_TARGET_ESP32S2)
+#elif defined(ARDUINO_ESP32S2_DEV)
   enum {F13=1,F12=3,F27=7,F33=34,F15=10,F32=42,F14=11,F22=9,F23=8,F26=17,F25=14,F34=13,F39=12,F36=18,F4=19,F5=36,F18=35,F19=37,F16=20,F17=21,F21=16};
   #define DEVICE_SUFFIX "-S2"
 
-#elif defined(CONFIG_IDF_TARGET_ESP32C3)
+#elif defined(ARDUINO_ESP32C3_DEV)
   enum {F27=2,F33=7,F32=3,F14=10,F22=9,F23=8,F26=0,F25=1,F4=18,F5=4,F18=6,F19=5,F16=20,F17=21,F21=19};
   #define DEVICE_SUFFIX "-C3"