diff --git a/src/adxrs610/adxrs610.h b/src/adxrs610/adxrs610.h
index 5076fa31..e63dfc0d 100644
--- a/src/adxrs610/adxrs610.h
+++ b/src/adxrs610/adxrs610.h
@@ -27,6 +27,15 @@
 #include <string>
 #include <mraa/aio.hpp>
 
+// volts per degree / second (typ)
+#define m_degreeCoeff 0.006
+
+// volts per degree C (typ)
+#define m_temperatureCoeff 0.009
+
+// nominal temperature at m_centerVolts
+#define m_temperatureNom 25.0
+
 namespace upm {
   /**
    * @brief DFRobot ADXRS610 Gyro Beakout board
@@ -159,14 +168,6 @@ namespace upm {
 
     // aref / 2
     float m_centerVolts;
-
-    // volts per degree / second (typ)
-    static const float m_degreeCoeff = 0.006;
-
-    // volts per degree C (typ)
-    static const float m_temperatureCoeff = 0.009;
-    // nominal temperature at m_centerVolts
-    static const float m_temperatureNom = 25.0;
   };
 }
 
diff --git a/src/sx1276/sx1276.h b/src/sx1276/sx1276.h
index 9a282c39..e23a3953 100644
--- a/src/sx1276/sx1276.h
+++ b/src/sx1276/sx1276.h
@@ -42,6 +42,13 @@
 #include <mraa/spi.hpp>
 #include <mraa/gpio.hpp>
 
+// Our crystal oscillator frequency (32Mhz)
+#define FXOSC_FREQ 32000000.0
+
+// Our freq stepping resolution (in Hz) if FXOSC_FREQ is 32Mhz
+// (FXOSC_FREQ / 2^19) =
+#define FXOSC_STEP 61.03515625
+
 namespace upm {
   
   /**
@@ -86,12 +93,6 @@ namespace upm {
     // The default chip revision
     static const uint8_t chipRevision = 0x12;
 
-    // Our crystal oscillator frequency (32Mhz)
-    static const double FXOSC_FREQ = 32000000.0;
-
-    // Our freq stepping resolution (in Hz) if FXOSC_FREQ is 32Mhz
-    // (FXOSC_FREQ / 2^19) =
-    static const double FXOSC_STEP = 61.03515625;
 
     // total FIFO size
     static const int FIFO_SIZE = 256;