diff --git a/master/master.brd b/master/master.brd
--- a/master/master.brd
+++ b/master/master.brd
@@ -163,6 +163,7 @@
 <wire x1="45.72" y1="43.18" x2="43.18" y2="43.18" width="0.4064" layer="21"/>
 <circle x="20.32" y="47.625" radius="0.127" width="0.4064" layer="21"/>
 <text x="80.01" y="27.94" size="1.778" layer="21">heater</text>
+<text x="62.23" y="25.4" size="1.27" layer="21" font="vector" rot="R90">via to gnd plane below</text>
 </plain>
 <libraries>
 <library name="SparkFun">
@@ -1164,9 +1165,9 @@ design rules under a new name.</descript
 <element name="R10" library="SparkFun" package="0603-RES" value="4.7k" x="56.515" y="16.51" rot="R180"/>
 <element name="R11" library="SparkFun" package="0603-RES" value="4.7k" x="56.515" y="21.59"/>
 <element name="Q5" library="transistor-npn" package="SOT23-BEC" value="NPN" x="38.1" y="44.45"/>
-<element name="R15" library="SparkFun" package="0603-RES" value="10k" x="69.85" y="19.05" rot="R180"/>
+<element name="R15" library="SparkFun" package="0603-RES" value="100k" x="69.85" y="19.05" rot="R180"/>
 <element name="C5" library="SparkFun" package="0603-CAP" value="10uF" x="69.85" y="16.51"/>
-<element name="R17" library="SparkFun" package="0603-RES" value="10k" x="69.85" y="17.78" rot="R180"/>
+<element name="R17" library="SparkFun" package="0603-RES" value="100k" x="69.85" y="17.78" rot="R180"/>
 <element name="R18" library="SparkFun" package="0603-RES" value="10k" x="53.34" y="50.8" rot="R270"/>
 <element name="R19" library="SparkFun" package="0603-RES" value="10k" x="26.67" y="2.54" rot="R180"/>
 <element name="R20" library="SparkFun" package="0603-RES" value="10k" x="22.86" y="2.54" rot="R180"/>
@@ -1184,8 +1185,8 @@ design rules under a new name.</descript
 <element name="C16" library="SparkFun" package="0603-CAP" value="220nF" x="45.72" y="36.195" rot="R180"/>
 <element name="D1" library="SparkFun" package="SMA-DIODE" value="DIODE-SCHOTTKY" x="45.72" y="38.735" rot="R180"/>
 <element name="L3" library="SparkFun" package="SRU1038" value="47uH" x="53.34" y="42.545"/>
-<element name="C18" library="SparkFun" package="0805" value="100uF" x="58.42" y="38.1" rot="R180"/>
-<element name="C19" library="SparkFun" package="0603-CAP" value="220nF" x="58.42" y="36.195" rot="R180"/>
+<element name="C18" library="SparkFun" package="0805" value="100uF" x="58.42" y="38.1"/>
+<element name="C19" library="SparkFun" package="0603-CAP" value="220nF" x="58.42" y="36.195"/>
 <element name="3.3V_LDO_REG" library="SeniorDesign" package="SOIC8" value="TPS76833QD" x="22.86" y="44.45" rot="R270"/>
 <element name="C21" library="SparkFun" package="0603-CAP" value="0.1uF" x="17.78" y="44.45" rot="R90"/>
 <element name="C20" library="SparkFun" package="0603-CAP" value="10uF" x="22.86" y="48.26" rot="R180"/>
@@ -1195,7 +1196,7 @@ design rules under a new name.</descript
 <element name="U7" library="SeniorDesign" package="SOT23-5" value="24AA32AFT" x="18.415" y="9.525" rot="R180"/>
 <element name="U$7" library="SeniorDesign" package="MS412FE-FL26E" value="MS412FE-FL26E" x="13.97" y="8.89" rot="R180"/>
 <element name="D2" library="SparkFun" package="SOD-323" value="" x="22.86" y="10.16"/>
-<element name="R3" library="SparkFun" package="0603-RES" value="1k" x="26.035" y="8.89" rot="R270"/>
+<element name="R3" library="SparkFun" package="0603-RES" value="220R" x="26.035" y="8.89" rot="R270"/>
 <element name="X5" library="con-coax" package="BU-SMA-H" value="BU-SMA-H" x="12.065" y="33.655" rot="R180">
 <attribute name="OC_NEWARK" value="unknown" x="12.065" y="33.655" size="1.778" layer="27" rot="R180" display="off"/>
 <attribute name="MPN" value="" x="12.065" y="33.655" size="1.778" layer="27" rot="R180" display="off"/>
@@ -1224,6 +1225,10 @@ design rules under a new name.</descript
 <element name="Q9" library="transistor-npn" package="SOT23-BEC" value="NPN" x="82.55" y="35.56" rot="R180"/>
 <element name="R29" library="SparkFun" package="0603-RES" value="1M" x="85.09" y="35.56" rot="R90"/>
 <element name="10K" library="SparkFun" package="0603-RES" value="100k" x="80.01" y="35.56" rot="R270"/>
+<element name="AUX4" library="adafruit" package="CHIPLED_0603" value="GREEN" x="3.81" y="-10.16"/>
+<element name="R4" library="SparkFun" package="0603-RES" value="10k" x="2.54" y="-13.97"/>
+<element name="L1" library="SparkFun" package="C0402" value="BLM18HB331SN1D" x="2.54" y="-17.78"/>
+<element name="C4" library="SparkFun" package="0603-CAP" value=".1uF" x="2.54" y="-21.59"/>
 </elements>
 <signals>
 <signal name="GND">
@@ -1277,7 +1282,6 @@ design rules under a new name.</descript
 <contactref element="3.3V_LDO_REG" pad="2"/>
 <contactref element="C21" pad="2"/>
 <contactref element="C20" pad="2"/>
-<contactref element="TEMP" pad="2"/>
 <contactref element="U3" pad="12"/>
 <contactref element="U3" pad="13"/>
 <contactref element="U3" pad="24"/>
@@ -1301,9 +1305,6 @@ design rules under a new name.</descript
 <wire x1="47.87" y1="38.735" x2="51.435" y2="38.735" width="0.4064" layer="1"/>
 <wire x1="51.435" y1="38.735" x2="52.07" y2="38.1" width="0.4064" layer="1"/>
 <wire x1="52.07" y1="38.1" x2="52.07" y2="34.29" width="0.4064" layer="1"/>
-<wire x1="57.52" y1="38.1" x2="52.07" y2="38.1" width="0.4064" layer="1"/>
-<wire x1="57.52" y1="38.1" x2="57.52" y2="36.245" width="0.4064" layer="1"/>
-<wire x1="57.52" y1="36.245" x2="57.57" y2="36.195" width="0.4064" layer="1"/>
 <wire x1="57.57" y1="31.115" x2="55.94" y2="31.115" width="0.4064" layer="1"/>
 <wire x1="55.94" y1="31.115" x2="54.67" y2="32.385" width="0.4064" layer="1"/>
 <wire x1="54.67" y1="32.385" x2="54.67" y2="33.655" width="0.4064" layer="1"/>
@@ -1354,6 +1355,9 @@ design rules under a new name.</descript
 <vertex x="90.17" y="27.94"/>
 <vertex x="76.2" y="27.94"/>
 </polygon>
+<contactref element="AUX4" pad="C"/>
+<contactref element="C4" pad="2"/>
+<contactref element="TEMP" pad="2"/>
 <wire x1="46.99" y1="50.8" x2="51.435" y2="51.55" width="0" layer="19" extent="1-1"/>
 <wire x1="42.86" y1="48.28" x2="46.57" y2="48.26" width="0" layer="19" extent="1-1"/>
 <wire x1="40.96" y1="48.28" x2="42.86" y2="48.28" width="0" layer="19" extent="1-1"/>
@@ -1361,7 +1365,9 @@ design rules under a new name.</descript
 <wire x1="38.42" y1="38.08" x2="39.05" y2="43.35" width="0" layer="19" extent="1-1"/>
 <wire x1="40.32" y1="38.08" x2="38.42" y2="38.08" width="0" layer="19" extent="1-1"/>
 <wire x1="47.87" y1="38.735" x2="40.32" y2="38.08" width="0" layer="19" extent="1-1"/>
-<wire x1="57.785" y1="33.655" x2="57.57" y2="36.195" width="0" layer="19" extent="1-16"/>
+<wire x1="57.785" y1="33.655" x2="57.57" y2="31.115" width="0" layer="19" extent="1-16"/>
+<wire x1="59.27" y1="36.195" x2="57.785" y2="33.655" width="0" layer="19" extent="1-16"/>
+<wire x1="59.32" y1="38.1" x2="59.27" y2="36.195" width="0" layer="19" extent="1-1"/>
 <wire x1="47.41" y1="25.4" x2="52.97" y2="30.48" width="0" layer="19" extent="1-1"/>
 <wire x1="40.64" y1="26.25" x2="44.45" y2="24.55" width="0" layer="19" extent="1-16"/>
 <wire x1="38.1" y1="26.25" x2="40.64" y2="26.25" width="0" layer="19" extent="16-16"/>
@@ -1406,6 +1412,8 @@ design rules under a new name.</descript
 <wire x1="70.7" y1="15.24" x2="57.67" y2="7.62" width="0" layer="19" extent="1-1"/>
 <wire x1="70.7" y1="16.51" x2="70.7" y2="15.24" width="0" layer="19" extent="1-1"/>
 <wire x1="81.02" y1="31.75" x2="70.7" y2="16.51" width="0" layer="19" extent="1-1"/>
+<wire x1="3.81" y1="-9.41" x2="18.01" y2="3.79" width="0" layer="19" extent="1-1"/>
+<wire x1="3.39" y1="-21.59" x2="3.81" y2="-9.41" width="0" layer="19" extent="1-1"/>
 </signal>
 <signal name="N$1">
 <contactref element="IC1" pad="7"/>
@@ -1626,22 +1634,16 @@ design rules under a new name.</descript
 <contactref element="3.3V_LDO_REG" pad="6"/>
 <contactref element="3.3V_LDO_REG" pad="5"/>
 <contactref element="C20" pad="1"/>
-<contactref element="TEMP" pad="1"/>
 <contactref element="ICSP" pad="2"/>
-<contactref element="U3" pad="23"/>
-<contactref element="C7" pad="1"/>
 <contactref element="U7" pad="4"/>
 <contactref element="D2" pad="2"/>
 <contactref element="IC1" pad="27"/>
-<wire x1="23.695" y1="12.9" x2="23.695" y2="10.475" width="0.4064" layer="1"/>
 <wire x1="23.695" y1="10.475" x2="24.01" y2="10.16" width="0.4064" layer="1"/>
-<wire x1="23.495" y1="8.47" x2="23.71" y2="8.255" width="0.4064" layer="1"/>
 <wire x1="17.465" y1="8.225" x2="17.465" y2="7.3" width="0.4064" layer="1"/>
 <wire x1="17.465" y1="7.3" x2="17.78" y2="6.985" width="0.4064" layer="1"/>
 <wire x1="17.78" y1="6.985" x2="22.86" y2="6.985" width="0.4064" layer="1"/>
 <wire x1="22.86" y1="6.985" x2="23.495" y2="7.62" width="0.4064" layer="1"/>
 <wire x1="23.495" y1="7.62" x2="23.495" y2="8.04" width="0.4064" layer="1"/>
-<wire x1="23.495" y1="8.04" x2="23.71" y2="8.255" width="0.4064" layer="1"/>
 <wire x1="41.06" y1="6.35" x2="41.06" y2="7.405" width="0.4064" layer="1"/>
 <wire x1="41.06" y1="7.405" x2="41.275" y2="7.62" width="0.4064" layer="1"/>
 <wire x1="41.275" y1="7.62" x2="43.18" y2="7.62" width="0.4064" layer="1"/>
@@ -1649,7 +1651,6 @@ design rules under a new name.</descript
 <wire x1="43.815" y1="8.255" x2="43.815" y2="10.545" width="0.4064" layer="1"/>
 <wire x1="43.815" y1="10.545" x2="43.65" y2="10.71" width="0.4064" layer="1"/>
 <wire x1="55.665" y1="21.59" x2="55.665" y2="20.44" width="0.4064" layer="1"/>
-<wire x1="55.665" y1="20.44" x2="55.225" y2="20" width="0.4064" layer="1"/>
 <wire x1="55.665" y1="16.51" x2="55.665" y2="16.93" width="0.4064" layer="1"/>
 <wire x1="55.665" y1="16.93" x2="56.515" y2="17.78" width="0.4064" layer="1"/>
 <wire x1="56.515" y1="17.78" x2="56.515" y2="19.59" width="0.4064" layer="1"/>
@@ -1662,7 +1663,6 @@ design rules under a new name.</descript
 <wire x1="27.305" y1="44.7675" x2="26.3525" y2="43.815" width="0.4064" layer="1"/>
 <wire x1="26.3525" y1="43.815" x2="25.46" y2="43.815" width="0.4064" layer="1"/>
 <wire x1="24.01" y1="10.16" x2="24.01" y2="8.555" width="0.4064" layer="1"/>
-<wire x1="24.01" y1="8.555" x2="23.71" y2="8.255" width="0.4064" layer="1"/>
 <wire x1="35.56" y1="18.3125" x2="36.2975" y2="18.3125" width="0.4064" layer="1"/>
 <wire x1="36.2975" y1="18.3125" x2="37.3" y2="17.31" width="0.4064" layer="1"/>
 <wire x1="38.65" y1="17.31" x2="37.3" y2="17.31" width="0.4064" layer="1"/>
@@ -1670,10 +1670,14 @@ design rules under a new name.</descript
 <wire x1="49.11" y1="25.2975" x2="47.9425" y2="24.13" width="0.4064" layer="1"/>
 <wire x1="23.71" y1="48.26" x2="26.035" y2="48.26" width="0.4064" layer="1"/>
 <wire x1="26.035" y1="48.26" x2="27.305" y2="46.99" width="0.4064" layer="1"/>
+<contactref element="L1" pad="2"/>
+<contactref element="C4" pad="1"/>
+<contactref element="TEMP" pad="1"/>
 <wire x1="69" y1="17.78" x2="69" y2="19.05" width="0" layer="19" extent="1-1"/>
 <wire x1="69" y1="16.51" x2="69" y2="17.78" width="0" layer="19" extent="1-1"/>
 <wire x1="69" y1="15.24" x2="69" y2="16.51" width="0" layer="19" extent="1-1"/>
 <wire x1="56.515" y1="17.78" x2="69" y2="17.78" width="0" layer="19" extent="1-1"/>
+<wire x1="55.225" y1="20" x2="55.665" y2="20.44" width="0" layer="19" extent="1-1"/>
 <wire x1="50.25" y1="16.51" x2="55.665" y2="16.51" width="0" layer="19" extent="1-1"/>
 <wire x1="49.11" y1="25.2975" x2="55.665" y2="21.59" width="0" layer="19" extent="1-1"/>
 <wire x1="40.64" y1="24.55" x2="45.25" y2="23.66" width="0" layer="19" extent="1-16"/>
@@ -1683,9 +1687,12 @@ design rules under a new name.</descript
 <wire x1="36.195" y1="8.1525" x2="41.06" y2="7.405" width="0" layer="19" extent="1-1"/>
 <wire x1="41.91" y1="1.27" x2="41.06" y2="6.35" width="0" layer="19" extent="1-1"/>
 <wire x1="25.69" y1="15.775" x2="35.56" y2="18.3125" width="0" layer="19" extent="1-16"/>
-<wire x1="23.695" y1="12.9" x2="25.69" y2="15.775" width="0" layer="19" extent="1-16"/>
+<wire x1="23.695" y1="10.475" x2="25.69" y2="15.775" width="0" layer="19" extent="1-16"/>
+<wire x1="23.495" y1="8.04" x2="24.01" y2="8.555" width="0" layer="19" extent="1-1"/>
 <wire x1="16.83" y1="27.74" x2="25.69" y2="15.775" width="0" layer="19" extent="16-16"/>
 <wire x1="25.46" y1="42.545" x2="16.83" y2="27.74" width="0" layer="19" extent="1-16"/>
+<wire x1="3.19" y1="-17.78" x2="17.78" y2="6.985" width="0" layer="19" extent="1-1"/>
+<wire x1="1.69" y1="-21.59" x2="3.19" y2="-17.78" width="0" layer="19" extent="1-1"/>
 </signal>
 <signal name="HX1_EN_5V">
 <contactref element="M2" pad="EN"/>
@@ -1701,7 +1708,6 @@ design rules under a new name.</descript
 <signal name="5V">
 <contactref element="M2" pad="VCC"/>
 <contactref element="C13" pad="2"/>
-<contactref element="L3" pad="2"/>
 <contactref element="5V_SWITCHING" pad="4"/>
 <contactref element="C18" pad="1"/>
 <contactref element="C19" pad="1"/>
@@ -1709,17 +1715,20 @@ design rules under a new name.</descript
 <contactref element="3.3V_LDO_REG" pad="3"/>
 <contactref element="C21" pad="1"/>
 <contactref element="IC2" pad="5"/>
-<wire x1="59.27" y1="36.195" x2="59.27" y2="38.05" width="0.4064" layer="1"/>
-<wire x1="59.27" y1="38.05" x2="59.32" y2="38.1" width="0.4064" layer="1"/>
-<wire x1="59.27" y1="36.195" x2="54.67" y2="36.195" width="0.4064" layer="1"/>
-<wire x1="59.32" y1="38.1" x2="59.32" y2="41.065" width="0.4064" layer="1"/>
-<wire x1="59.32" y1="41.065" x2="57.84" y2="42.545" width="0.4064" layer="1"/>
+<wire x1="57.57" y1="36.195" x2="54.67" y2="36.195" width="0.4064" layer="1"/>
 <wire x1="44.45" y1="50.8" x2="44.45" y2="48.68" width="0.4064" layer="1"/>
 <wire x1="44.45" y1="48.68" x2="44.87" y2="48.26" width="0.4064" layer="1"/>
 <wire x1="17.78" y1="43.6" x2="20.045" y2="43.6" width="0.4064" layer="1"/>
 <wire x1="20.045" y1="43.6" x2="20.26" y2="43.815" width="0.4064" layer="1"/>
 <wire x1="20.26" y1="43.815" x2="20.26" y2="42.545" width="0.4064" layer="1"/>
 <contactref element="IC3" pad="5"/>
+<contactref element="L3" pad="2"/>
+<polygon width="0.4064" layer="1">
+<vertex x="53.34" y="44.45"/>
+<vertex x="58.1025" y="44.45"/>
+<vertex x="58.1025" y="35.8775"/>
+<vertex x="53.34" y="35.8775"/>
+</polygon>
 <wire x1="42.86" y1="45.69" x2="44.87" y2="48.26" width="0" layer="19" extent="1-1"/>
 <wire x1="38.42" y1="40.67" x2="42.86" y2="45.69" width="0" layer="19" extent="1-1"/>
 <wire x1="57.84" y1="42.545" x2="44.87" y2="48.26" width="0" layer="19" extent="1-1"/>
@@ -1727,6 +1736,8 @@ design rules under a new name.</descript
 </signal>
 <signal name="HX1_TX_5V">
 <contactref element="M2" pad="TXD"/>
+<contactref element="IC3" pad="4"/>
+<wire x1="40.32" y1="40.67" x2="49.53" y2="50.8" width="0" layer="19" extent="1-1"/>
 </signal>
 <signal name="STATLED">
 <contactref element="IC1" pad="43"/>
@@ -1990,12 +2001,9 @@ design rules under a new name.</descript
 <wire x1="46.57" y1="2.54" x2="46.57" y2="1.37" width="0.4064" layer="1"/>
 <wire x1="46.57" y1="1.37" x2="46.47" y2="1.27" width="0.4064" layer="1"/>
 </signal>
-<signal name="HX1_PWM_3V3">
+<signal name="HX1_TX">
 <contactref element="IC3" pad="2"/>
 </signal>
-<signal name="HX1_PWM_5V">
-<contactref element="IC3" pad="4"/>
-</signal>
 <signal name="HEAT">
 <contactref element="IC1" pad="31"/>
 <contactref element="10K" pad="2"/>
@@ -2026,6 +2034,24 @@ design rules under a new name.</descript
 <wire x1="80.9625" y1="38.1" x2="80.01" y2="37.1475" width="0.4064" layer="1"/>
 <wire x1="80.01" y1="37.1475" x2="80.01" y2="36.41" width="0.4064" layer="1"/>
 </signal>
+<signal name="ASSOCLED">
+<contactref element="U$2" pad="15"/>
+<contactref element="R4" pad="1"/>
+<wire x1="1.69" y1="-13.97" x2="26.83" y2="2.74" width="0" layer="19" extent="1-16"/>
+</signal>
+<signal name="N$5">
+<contactref element="R4" pad="2"/>
+<contactref element="AUX4" pad="A"/>
+<wire x1="3.81" y1="-10.91" x2="3.39" y2="-13.97" width="0" layer="19" extent="1-1"/>
+</signal>
+<signal name="N$6">
+<contactref element="U3" pad="23"/>
+<contactref element="C7" pad="1"/>
+<wire x1="23.495" y1="8.47" x2="23.71" y2="8.255" width="0.4064" layer="1"/>
+<contactref element="L1" pad="1"/>
+<wire x1="23.495" y1="8.47" x2="23.695" y2="12.9" width="0" layer="19" extent="1-1"/>
+<wire x1="1.89" y1="-17.78" x2="23.71" y2="8.255" width="0" layer="19" extent="1-1"/>
+</signal>
 </signals>
 </board>
 </drawing>