Unfortunately the topic is still open.
The problem came out again and I start believing it's not about the stripped wires which are now separated one from the other.
I explain you the exact configuration, so maybe someone can help.
I have n.2 4051 chained togheter. S0 goes to pin 8, S1 to pin 7, S2 to pin 4 (all digitalPins).
To make it clear from now on I call S0(1), S1(1), S2(1) the pins from the first 4051, while S0(2), S1(2), S2(2) those from the second.
When not powered all joints (even testing directly on the ic) appear correctly chained together: resistance beteween
S0(1) and S0(2)
S1(1) and S1(2)
S2(1) and S2(2)
is 1.8Ohm
While
S0(1) and S1(2)
S0(1) and S2(2)
S0(1) and S1(1)
S0(1) and S2(1)
there is no resistance.
When powered:
S0(1) and S0(2)
S1(1) and S1(2)
S2(1) and S2(2)
is 1.8Ohm
S0(1) and S1(1)
S0(1) and S1(2)
S0(2) and S1(2)
is 44Ohm
while
S0(1) and S2(1)
S0(1) and S2(1)
S0(2) and S2(2)
there is no resistence
this is the test code I am using to check the buttons
/*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!NB!!!!!!!!!!!!!!!!!!!!!
ALWAYS CHECK THE INPUT S0, S1, S2!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
//***********************************/
///////////INPUTS VARIABLES////////////
int h;
int s0 = 8;
int s1 = 7;
int s2 = 4;
int sensorNumber;
int threshold = 100;
int mux4051InPin[2] = {
0, 1};
int result_mux4051OneInPin[8] = {
};
int result_mux4051TwoInPin[8] = {
};
//////////////////////////////////////
void setup(){
pinMode(s0, OUTPUT);
pinMode(s1, OUTPUT);
pinMode(s2, OUTPUT);
Serial.begin(9600);
}
void loop(){
for(int i=0; i<8; i++){
digitalWrite(s0,bitRead(i, 0));
digitalWrite(s1,bitRead(i, 1));
digitalWrite(s2,bitRead(i, 2));
for(int e = 0; e<2; e++){
sensorNumber = (i+(8*e));
Serial.print("Sensor n.");
Serial.print (sensorNumber);
Serial.print(" is ");
if (e == 0){
result_mux4051OneInPin[i] = analogRead(mux4051InPin[e]);
Serial.println(result_mux4051OneInPin[i] );
}
else if (e == 1){
result_mux4051TwoInPin[i] = analogRead(mux4051InPin[e]);
Serial.println(result_mux4051TwoInPin[i]);
}
}// efor loop end
}//main for loop end
delay(2200);
}//main void end
Please someone can help me? The problem is on the circuit (everything worked fine on breadboard and also on the prefboard until today) but I cannot figure out what's the problem.