diff --git a/Sparkfun-Pro-RF/longfi-us915/README.md b/Sparkfun-Pro-RF/longfi-us915/README.md
index 1fd87c2..27b3995 100644
--- a/Sparkfun-Pro-RF/longfi-us915/README.md
+++ b/Sparkfun-Pro-RF/longfi-us915/README.md
@@ -9,7 +9,7 @@ From the Arduino IDE, open the Library Manager (Sketch->Include Library->Manage
 [IBM LMIC framework](https://github.com/matthijskooijman/arduino-lmic)  
 
 ### Required Configuration
-This library requires that a config file be setup properly. After you have installed the `IBM LMIC framework` library, navigate to it's directory on your operating system found below. Next, replace the `config.h` file in this directory with this [config.h](config.h) file.
+This library requires that a config file be setup properly. After you have installed the `IBM LMIC framework` library, navigate to it's directory on your operating system found below. Next, replace the `config.h` file in this directory with this [config.h](https://github.com/helium/longfi-arduino/blob/master/Sparkfun-Pro-RF/longfi-us915/config.h) file.
 
 linux: /home/{user}/Arduino/libraries/IBM_LMIC_framework/src/lmic  
 windows: Documents/Arduino/libraries/IBM_LMIC_framework/src/lmic  
diff --git a/Sparkfun-Pro-RF/longfi-us915/config.h b/Sparkfun-Pro-RF/longfi-us915/config.h
index e69de29..62da07f 100644
--- a/Sparkfun-Pro-RF/longfi-us915/config.h
+++ b/Sparkfun-Pro-RF/longfi-us915/config.h
@@ -0,0 +1,83 @@
+#ifndef _lmic_config_h_
+#define _lmic_config_h_
+
+// In the original LMIC code, these config values were defined on the
+// gcc commandline. Since Arduino does not allow easily modifying the
+// compiler commandline, use this file instead.
+
+// #define CFG_eu868 1
+#define CFG_us915 1
+// This is the SX1272/SX1273 radio, which is also used on the HopeRF
+// RFM92 boards.
+//#define CFG_sx1272_radio 1
+// This is the SX1276/SX1277/SX1278/SX1279 radio, which is also used on
+// the HopeRF RFM95 boards.
+#define CFG_sx1276_radio 1
+
+// 16 μs per tick
+// LMIC requires ticks to be 15.5μs - 100 μs long
+#define US_PER_OSTICK_EXPONENT 4
+#define US_PER_OSTICK (1 << US_PER_OSTICK_EXPONENT)
+#define OSTICKS_PER_SEC (1000000 / US_PER_OSTICK)
+
+// Set this to 1 to enable some basic debug output (using printf) about
+// RF settings used during transmission and reception. Set to 2 to
+// enable more verbose output. Make sure that printf is actually
+// configured (e.g. on AVR it is not by default), otherwise using it can
+// cause crashing.
+#define LMIC_DEBUG_LEVEL 0
+
+// Enable this to allow using printf() to print to the given serial port
+// (or any other Print object). This can be easy for debugging. The
+// current implementation only works on AVR, though.
+//#define LMIC_PRINTF_TO Serial
+
+// Any runtime assertion failures are printed to this serial port (or
+// any other Print object). If this is unset, any failures just silently
+// halt execution.
+#define LMIC_FAILURE_TO Serial
+
+// Uncomment this to disable all code related to joining
+//#define DISABLE_JOIN
+// Uncomment this to disable all code related to ping
+//#define DISABLE_PING
+// Uncomment this to disable all code related to beacon tracking.
+// Requires ping to be disabled too
+//#define DISABLE_BEACONS
+
+// Uncomment these to disable the corresponding MAC commands.
+// Class A
+//#define DISABLE_MCMD_DCAP_REQ // duty cycle cap
+//#define DISABLE_MCMD_DN2P_SET // 2nd DN window param
+//#define DISABLE_MCMD_SNCH_REQ // set new channel
+// Class B
+//#define DISABLE_MCMD_PING_SET // set ping freq, automatically disabled by DISABLE_PING
+//#define DISABLE_MCMD_BCNI_ANS // next beacon start, automatical disabled by DISABLE_BEACON
+
+// In LoRaWAN, a gateway applies I/Q inversion on TX, and nodes do the
+// same on RX. This ensures that gateways can talk to nodes and vice
+// versa, but gateways will not hear other gateways and nodes will not
+// hear other nodes. By uncommenting this macro, this inversion is
+// disabled and this node can hear other nodes. If two nodes both have
+// this macro set, they can talk to each other (but they can no longer
+// hear gateways). This should probably only be used when debugging
+// and/or when talking to the radio directly (e.g. like in the "raw"
+// example).
+//#define DISABLE_INVERT_IQ_ON_RX
+
+// This allows choosing between multiple included AES implementations.
+// Make sure exactly one of these is uncommented.
+//
+// This selects the original AES implementation included LMIC. This
+// implementation is optimized for speed on 32-bit processors using
+// fairly big lookup tables, but it takes up big amounts of flash on the
+// AVR architecture.
+// #define USE_ORIGINAL_AES
+//
+// This selects the AES implementation written by Ideetroon for their
+// own LoRaWAN library. It also uses lookup tables, but smaller
+// byte-oriented ones, making it use a lot less flash space (but it is
+// also about twice as slow as the original).
+#define USE_IDEETRON_AES
+
+#endif // _lmic_config_h_