diff --git a/src/adc121c021/adc121c021.cxx b/src/adc121c021/adc121c021.cxx
index cea682ba..c3b73dc6 100644
--- a/src/adc121c021/adc121c021.cxx
+++ b/src/adc121c021/adc121c021.cxx
@@ -26,6 +26,7 @@
 #include <string>
 #include <stdexcept>
 
+#include "upm_string_parser.hpp"
 #include "adc121c021.hpp"
 
 using namespace upm;
@@ -57,6 +58,80 @@ ADC121C021::ADC121C021(int bus, uint8_t address, float vref)
   m_vref = vref;
 }
 
+ADC121C021::ADC121C021(std::string initStr) : mraaIo(initStr)
+{
+  mraa_io_descriptor* descs = mraaIo.getMraaDescriptors();
+
+  std::vector<std::string> upmTokens;
+
+  if (!mraaIo.getLeftoverStr().empty()) {
+      upmTokens = UpmStringParser::parse(mraaIo.getLeftoverStr());
+  }
+
+  if(!descs->i2cs)
+  {
+    throw std::invalid_argument(std::string(__FUNCTION__) +
+                                  ": mraa_i2c_init() failed");
+  }
+  else
+  {
+    if( !(m_i2c = descs->i2cs[0]) )
+    {
+      throw std::invalid_argument(std::string(__FUNCTION__) +
+                                  ": mraa_i2c_init() failed");
+
+    }
+  }
+
+  std::string::size_type sz;
+
+  for (std::string tok : upmTokens) {
+    if(tok.substr(0, 5) == "vref:") {
+        m_vref = std::stof(tok.substr(5));
+    }
+    if(tok.substr(0,10) == "writeByte:") {
+      uint8_t reg = std::stoi(tok.substr(10),&sz,0);
+      tok = tok.substr(10);
+      uint8_t byte = std::stoi(tok.substr(sz+1),nullptr,0);
+      writeByte(reg, byte);
+    }
+    if(tok.substr(0,10) == "writeWord:") {
+      uint8_t reg = std::stoi(tok.substr(10),&sz,0);
+      tok = tok.substr(10);
+      uint16_t word = std::stoi(tok.substr(sz+1),nullptr,0);
+      writeWord(reg, word);
+    }
+    if(tok.substr(0,16) == "enableAlertFlag:") {
+      bool enable = std::stoi(tok.substr(16),nullptr,0);
+      enableAlertFlag(enable);
+    }
+    if(tok.substr(0,15) == "enableAlertPin:") {
+      bool enable = std::stoi(tok.substr(15),nullptr,0);
+      enableAlertPin(enable);
+    }
+    if(tok.substr(0,16) == "enableAlertHold:") {
+      bool enable = std::stoi(tok.substr(16),nullptr,0);
+      enableAlertHold(enable);
+    }
+    if(tok.substr(0,27) == "enableAlertPinPolarityHigh:") {
+      bool enable = std::stoi(tok.substr(27),nullptr,0);
+      enableAlertPinPolarityHigh(enable);
+    }
+    if(tok.substr(0,17) == "setAlertLowLimit:") {
+      uint16_t limit = std::stoi(tok.substr(17),nullptr,0);
+      setAlertLowLimit(limit);
+    }
+    if(tok.substr(0,18) == "setAlertHighLimit:") {
+      uint16_t limit = std::stoi(tok.substr(18),nullptr,0);
+      setAlertHighLimit(limit);
+    }
+    if(tok.substr(0,14) == "setHysteresis:") {
+      uint16_t limit = std::stoi(tok.substr(14),nullptr,0);
+      setHysteresis(limit);
+    }
+  }
+}
+
 ADC121C021::~ADC121C021()
 {
   mraa_i2c_stop(m_i2c);
@@ -131,12 +206,12 @@ bool ADC121C021::getAlertStatus()
       uint8_t astatus = readByte(ADC121C021_REG_ALERT_STATUS);
       if (astatus & 0x01)
         m_alertLow = true;
-      else 
+      else
         m_alertLow = false;
 
       if (astatus & 0x02)
         m_alertHigh = true;
-      else 
+      else
         m_alertHigh = false;
     }
 
@@ -210,7 +285,7 @@ void ADC121C021::enableAlertPinPolarityHigh(bool enable)
 
 void ADC121C021::setAutomaticConversion(ADC121C021_CYCLE_TIME_T cycleTime)
 {
-  // first we 
+  // first we
 
   // read the current config register, masking off the cycle time bits
   uint8_t val = readByte(ADC121C021_REG_CONFIG) & 0x1f;
diff --git a/src/adc121c021/adc121c021.hpp b/src/adc121c021/adc121c021.hpp
index 7a8ff6fe..1edb0cc5 100644
--- a/src/adc121c021/adc121c021.hpp
+++ b/src/adc121c021/adc121c021.hpp
@@ -25,6 +25,7 @@
 
 #include <string>
 #include <mraa/i2c.h>
+#include <mraa/initio.hpp>
 
 #define ADC121C021_I2C_BUS 0
 #define ADC121C021_DEFAULT_I2C_ADDR 0x55
@@ -100,6 +101,13 @@ namespace upm {
     ADC121C021(int bus, uint8_t address = ADC121C021_DEFAULT_I2C_ADDR,
                float vref = ADC121C021_DEFAULT_VREF);
 
+    /**
+     * Instantiates ADC121C021 Converter based on a given string.
+     *
+     * @param initStr string containing specific information for ADC121C021 initialization.
+     */
+    ADC121C021(std::string initStr);
+
     /**
      * ADC121C021 destructor
      */
@@ -140,7 +148,7 @@ namespace upm {
     uint16_t readWord(uint8_t reg);
 
     /**
-     * Reads the current value of conversion 
+     * Reads the current value of conversion
      *
      * @return Current value of conversion
      */
@@ -166,15 +174,15 @@ namespace upm {
 
     /**
      * Returns the current value of m_alertLow.  You must call
-     * getAlertStatus() to update this value. 
+     * getAlertStatus() to update this value.
      *
-     * @return Current status of the alert low flag 
+     * @return Current status of the alert low flag
      */
     bool alertLowTriggered() { return m_alertLow; };
 
     /**
      * Returns the current value of m_alertHigh.  You must call
-     * getAlertStatus() to update this value. 
+     * getAlertStatus() to update this value.
      *
      * @return Current status of the alert high flag
      */
@@ -232,7 +240,7 @@ namespace upm {
      * Enables or disables the automatic conversion mode. When enabled, the
      * ADC samples and updates the conversion value independently.
      * It is disabled by default, so conversion is only done by
-     * calling value(). 
+     * calling value().
      *
      * @param cycleTime Sets the cycle time for automatic conversion
      */
@@ -304,6 +312,7 @@ namespace upm {
 
   private:
     mraa_i2c_context m_i2c;
+    mraa::MraaIo mraaIo;
     uint8_t m_addr;
     float m_vref;
     bool m_alertLow;
diff --git a/src/ldt0028/ldt0028.hpp b/src/ldt0028/ldt0028.hpp
index 3e9d58a3..ac10a350 100644
--- a/src/ldt0028/ldt0028.hpp
+++ b/src/ldt0028/ldt0028.hpp
@@ -26,7 +26,6 @@
 #include <string>
 #include <mraa/aio.h>
 #include <mraa/initio.hpp>
-#include <mraa/initio.h>
 
 namespace upm {