diff --git a/envSetup.py b/envSetup.py
index 5f037cc..ea09966 100644
--- a/envSetup.py
+++ b/envSetup.py
@@ -79,7 +79,7 @@ if sslEnabled:
       cn = (cert_components.get(b'CN')).decode('utf-8')
     else:
       cn = cert_components.get('CN')
-    print('Centificate {0} - CN: {1}'.format(index, cn))
+    print('Certificate {0} - CN: {1}'.format(index, cn))
 
     try:
       temp_certname = '{0}_{1}.crt'.format("transformerMonitorServerCert", index)
diff --git a/lib/ATM90E36/ATM90E36.cpp b/lib/ATM90E36/ATM90E36.cpp
index ed0e613..908714a 100644
--- a/lib/ATM90E36/ATM90E36.cpp
+++ b/lib/ATM90E36/ATM90E36.cpp
@@ -462,12 +462,34 @@ void ATM90E36::begin(int pin, unsigned short lineFreq, unsigned short pgagain, u
   _pgagain = pgagain; //PGA Gain for current channels
   _ugain = ugain; //voltage rms gain
   _igainA = igainA; //CT1
-  _igainB = igainB; //CT2
-  _igainC = igainC; //CT3
-  _igainN = igainN; //N
+  _igainB = igainA; //CT2
+  _igainC = igainA; //CT3
+  _igainN = igainA; //N
   
   //pinMode(_energy_CS, OUTPUT); 
 
+   // calculation for voltage sag threshold - assumes we do not want to go under 90v for split phase and 190v otherwise
+  // determine proper low and high frequency threshold
+  unsigned short vSagTh;
+  unsigned short sagV;
+  unsigned short FreqHiThresh;
+  unsigned short FreqLoThresh;
+  if (_lineFreq == 4485 || _lineFreq == 5231)
+  {
+    sagV = 90;
+    FreqHiThresh = 61 * 100;
+    FreqLoThresh = 59 * 100;
+  }
+  else
+  {
+    sagV = 190;
+    FreqHiThresh = 51 * 100;
+    FreqLoThresh = 49 * 100;
+  }
+
+  vSagTh = (sagV * 100 * sqrt(2)) / (2 * _ugain / 32768);
+
+
   /* Enable SPI */
   //SPI.begin(); //moved to main program to assign different SPI pins
   
@@ -533,12 +555,12 @@ void ATM90E36::begin(int pin, unsigned short lineFreq, unsigned short pgagain, u
   CommEnergyIC(WRITE, IgainA, _igainA);      // A line current gain
   CommEnergyIC(WRITE, UoffsetA, 0x0000);    // A Voltage offset
   CommEnergyIC(WRITE, IoffsetA, 0x0000);    // A line current offset
-  CommEnergyIC(WRITE, UgainB, _ugain);      // B Voltage rms gain
-  CommEnergyIC(WRITE, IgainB, _igainB);      // B line current gain
+  CommEnergyIC(WRITE, UgainB, 0);      // B Voltage rms gain
+  CommEnergyIC(WRITE, IgainB, 0);      // B line current gain
   CommEnergyIC(WRITE, UoffsetB, 0x0000);    // B Voltage offset
   CommEnergyIC(WRITE, IoffsetB, 0x0000);    // B line current offset
-  CommEnergyIC(WRITE, UgainC, _ugain);      // C Voltage rms gain
-  CommEnergyIC(WRITE, IgainC, _igainC);      // C line current gain
+  CommEnergyIC(WRITE, UgainC, 0);      // C Voltage rms gain
+  CommEnergyIC(WRITE, IgainC, 0);      // C line current gain
   CommEnergyIC(WRITE, UoffsetC, 0x0000);    // C Voltage offset
   CommEnergyIC(WRITE, IoffsetC, 0x0000);    // C line current offset
   CommEnergyIC(WRITE, IgainN, _igainN);      // C line current gain
diff --git a/platformio.ini b/platformio.ini
index e526e27..e3378a6 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -22,12 +22,11 @@ upload_port = COM6
 [env:dev]
 build_flags = -D DEV ${env.build_flags}
 lib_deps = 
-	; knolleary/pubsubclient
-	; https://github.com/CircuitSetup/ATM90E36
-	; https://github.com/whatnick/ATM90E26_Arduino
-	; bblanchon/ArduinoJson @ ^6.21.3
-	; paulstoffregen/OneWire@^2.3.8
-	; milesburton/DallasTemperature@^3.11.0
+	knolleary/pubsubclient
+	https://github.com/whatnick/ATM90E26_Arduino
+	bblanchon/ArduinoJson @ ^6.21.3
+	paulstoffregen/OneWire@^2.3.8
+	milesburton/DallasTemperature@^3.11.0SP
 build_src_filter = +<transformerMonitor.cpp> -<.git/> -<.svn/> -<tests/>
 
 [env:store-creds]
diff --git a/src/tests/AT90E36.cpp b/src/tests/AT90E36.cpp
index 0e5a85d..d29325e 100644
--- a/src/tests/AT90E36.cpp
+++ b/src/tests/AT90E36.cpp
@@ -26,6 +26,14 @@ void setup() {
     - MOSI: 23
     - CS: 5
   */
+  // PM0 - 17
+  // PM1 - 21
+  // set normal detection mode for ATM90E36
+  pinMode(21, OUTPUT);
+  pinMode(34, INPUT);
+  pinMode(17, OUTPUT);
+  digitalWrite(17, HIGH);
+  digitalWrite(21, HIGH);
   delay(2000);
   Serial.begin(9600);
   while (!Serial) {
@@ -37,17 +45,18 @@ void setup() {
   // ss pin is the first parameter
   SPI.begin(SCK, MISO, MOSI, SS);
   delay(1000);
+
   /*
     CS pin - 33 for ESP32
     Line Frequency - 60 Hz for NA - 5509 - see MMode0 section (4.2.3) in data sheet for ATM90E36
-    PGA Gain - 
+    PGA Gain - adjusts ADC gain for current and voltage
     Current gain - 
     Note: values are adjusted from https://github.com/DitroniX/IPEM-IoT-Power-Energy-Monitor/blob/main/Code/IPEM_1_Test_Code_ATM90E32_ATM90E36/include/IPEM_Hardware.h
   */
-  unsigned short PgaGain = 0x5555; 
+  unsigned short PgaGain = 0b1101010101010101;
   unsigned short frequency = 0b0001010110000101;
-  unsigned short VoltageGain = 19800;
-  eic.begin(SS, frequency, PgaGain, VoltageGain, 0x1000,0x1000, 0x1000, 0x1000);
+  unsigned short VoltageGain = 19900;
+  eic.begin(SS, frequency, PgaGain, VoltageGain, 0x100,0x100, 0x100, 0x100);
   delay(1000);
 }
 
@@ -83,6 +92,7 @@ void loop() {
   freq=eic.GetFrequency();
   delay(10);
   Serial.println("f"+String(freq)+"Hz");
-  Serial.println("Waiting 1s");
-  delay(1000);
+  // Serial.println("Warn: "+String(digitalRead(34)));
+  Serial.println("Waiting 6s");
+  delay(6000);
 }
\ No newline at end of file