Новая схема (всё на реле). Передаём наверх все напряжения, пусть там разбираются

charger/charger.ino

@@ -11,9 +11,7 @@ ModbusRTU mb;
 #define ACC_STATE_REGISTER 4
 #define LAMP_STATE_REGISTER 5
 #define U_ACC_LOW_REGISTER 6
-#define U_ACC_HIGH_REGISTER 7
-#define U_LAMP_LOW_REGISTER 8
-#define U_LAMP_HIGH_REGISTER 9
+#define U_LAMP_LOW_REGISTER 10
 
 #define ACC_PIN 2
 #define LAMP_PIN 3
@@ -45,16 +43,19 @@ void setup()
   mb.addHreg(I_LAMP_HIGH_REGISTER);
   mb.addHreg(ACC_STATE_REGISTER);
   mb.addHreg(LAMP_STATE_REGISTER);
-  mb.addHreg(U_ACC_LOW_REGISTER);
-  mb.addHreg(U_ACC_HIGH_REGISTER);
-  mb.addHreg(U_LAMP_LOW_REGISTER);
-  mb.addHreg(U_LAMP_HIGH_REGISTER);
+  for (int i = 0; i < 4; i++)
+  {
+    mb.addHreg(U_ACC_LOW_REGISTER + i);
+    mb.addHreg(U_LAMP_LOW_REGISTER + i);
+  }
 }
 
 float I_lamp;
 float I_acc;
-float U_lamp;
-float U_acc;
+float U1_lamp;
+float U2_lamp;
+float U1_acc;
+float U2_acc;
 
 void ReadLamp()
 {
@@ -62,10 +63,9 @@ void ReadLamp()
   int a5 = analogRead(A5);
   // multiply by 5 as reference current, 
   // multiply by 3 because of the divider
-  float v1 = a4 / 1023.0 * 5 * 3;
-  float v2 = a5 / 1023.0 * 5 * 3;
-  I_lamp = (v1 - v2) / R_lamp;
-  U_lamp = v1;
+  U1_lamp = a4 / 1023.0 * 5 * 3;
+  U2_lamp = a5 / 1023.0 * 5 * 3;
+  I_lamp = (U1_lamp - U2_lamp) / R_lamp;
 }
 
 void ReadAcc()
@@ -74,10 +74,9 @@ void ReadAcc()
   int a3 = analogRead(A3);
   // multiply by 5 as reference current, 
   // multiply by 3 because of the divider
-  float v1 = a2 / 1023.0 * 5 * 3;
-  float v2 = a3 / 1023.0 * 5 * 3;
-  I_acc = (v1 - v2) / R_LIMITER;
-  U_acc = v1;
+  U1_acc = a2 / 1023.0 * 5 * 3;
+  U2_acc = a3 / 1023.0 * 5 * 3;
+  I_acc = (U1_acc - U2_acc) / R_LIMITER;
 }
 
 void WriteFloatReg(int start, float val)
@@ -95,26 +94,28 @@ void loop()
   ReadLamp();
   ReadAcc();
   WriteFloatReg(I_ACC_LOW_REGISTER, I_acc);
-  WriteFloatReg(U_ACC_LOW_REGISTER, U_acc);
+  WriteFloatReg(U_ACC_LOW_REGISTER, U1_acc);
+  WriteFloatReg(U_ACC_LOW_REGISTER + 2, U2_acc);
   WriteFloatReg(I_LAMP_LOW_REGISTER, I_lamp);
-  WriteFloatReg(U_LAMP_LOW_REGISTER, U_lamp);
+  WriteFloatReg(U_LAMP_LOW_REGISTER, U1_lamp);
+  WriteFloatReg(U_LAMP_LOW_REGISTER + 2, U2_lamp);
   mb.task();
-  lamp_state = mb.Hreg(lamp_state);
-  acc_state = mb.Hreg(acc_state);
+  lamp_state = mb.Hreg(LAMP_STATE_REGISTER);
+  acc_state = mb.Hreg(ACC_STATE_REGISTER);
   if (lamp_state)
   {
-    digitalWrite(LAMP_PIN, 1);
+    digitalWrite(LAMP_PIN, HIGH);
   }
   else 
   {
-    digitalWrite(LAMP_PIN, 0);
+    digitalWrite(LAMP_PIN, LOW);
   }
   if (acc_state)
   {
-    digitalWrite(ACC_PIN, 1);
+    digitalWrite(ACC_PIN, HIGH);
   }
   else
   {
-    digitalWrite(ACC_PIN, 0);
+    digitalWrite(ACC_PIN, LOW);
   }
 }