diff --git a/cocomobile-arduino/cocomobile-arduino.ino b/cocomobile-arduino/cocomobile-arduino.ino
index f4fc254..cc52b2c 100644
--- a/cocomobile-arduino/cocomobile-arduino.ino
+++ b/cocomobile-arduino/cocomobile-arduino.ino
@@ -1,6 +1,6 @@
 #include <SoftwareSerial.h>
 const float TENSION_SCALE = 15.701;
-const float CURRENT_SCALE = 27.322;
+const float CURRENT_SCALE = 31.25;
 const float ADC_TO_VOLT = 5.0 / 1023.0;
 
 SoftwareSerial lora(8, 9); // RX, TX
@@ -17,7 +17,9 @@ void setup() {
 
 void loop() {
   tens = (analogRead(A1) * ADC_TO_VOLT * TENSION_SCALE);
-  amp  = (analogRead(A0) * ADC_TO_VOLT * CURRENT_SCALE);
+  amp  = analogRead(A2);
+  if (amp < 505) amp = 505;
+  amp = (amp - 505) * ADC_TO_VOLT * CURRENT_SCALE;
 
   Serial.print(tens);
   Serial.print(",");
@@ -33,4 +35,4 @@ void loop() {
       line += c;
     }
   }
-}
+}
\ No newline at end of file