diff --git a/src/grove/grove.cxx b/src/grove/grove.cxx
index 6140f20c..1cc39129 100644
--- a/src/grove/grove.cxx
+++ b/src/grove/grove.cxx
@@ -109,7 +109,7 @@ bool GroveRelay::isOff()
 
 //// GroveTemp ////
 
-GroveTemp::GroveTemp(unsigned int pin)
+GroveTemp::GroveTemp(unsigned int pin, float scale)
 {
     if ( !(m_aio = mraa_aio_init(pin)) ) {
         throw std::invalid_argument(std::string(__FUNCTION__) +
@@ -117,6 +117,7 @@ GroveTemp::GroveTemp(unsigned int pin)
         return;
     }
     m_name = "Temperature Sensor";
+    m_scale = scale;
 }
 
 GroveTemp::~GroveTemp()
@@ -126,7 +127,7 @@ GroveTemp::~GroveTemp()
 
 int GroveTemp::value ()
 {
-    int a = mraa_aio_read(m_aio);
+    int a = mraa_aio_read(m_aio) * m_scale;
     float r = (float)(1023.0-a)*10000.0/a;
     float t = 1.0/(log(r/10000.0)/3975.0 + 1.0/298.15)-273.15;
     return (int) round(t);
diff --git a/src/grove/grove.hpp b/src/grove/grove.hpp
index 1ef60e92..a3e13c68 100644
--- a/src/grove/grove.hpp
+++ b/src/grove/grove.hpp
@@ -171,8 +171,10 @@ class GroveTemp: public Grove {
          * Grove analog temperature sensor constructor
          *
          * @param pin Analog pin to use
+         * @param scale Scaling factor for raw analog value from the ADC,
+         * useful for mixed 3.3V/5V boards
          */
-        GroveTemp(unsigned int pin);
+        GroveTemp(unsigned int pin, float scale = 1.0);
         /**
          * GroveTemp destructor
          */
@@ -191,6 +193,7 @@ class GroveTemp: public Grove {
         int value();
     private:
         mraa_aio_context m_aio;
+        float m_scale;
 };
 
 /**