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edited Apr 24, 2018 at 15:15

You are reading Serial before you check that there is anything valid to read:

Luku4 = Serial.read();

Luku4 = Serial.read();
while(Serial.available() == 0){}

Try swapping those two lines.

You are reading Serial before you check that there is anything valid to read:

Luku4 = Serial.read();

while(Serial.available() == 0){}

Try swapping those two lines.

You are reading Serial before you check that there is anything valid to read:

Luku4 = Serial.read();
while(Serial.available() == 0){}

Try swapping those two lines.

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answered Apr 24, 2018 at 12:33

CrossRoads

You are reading Serial before you check that there is anything valid to read:

Luku4 = Serial.read();

while(Serial.available() == 0){}

Try swapping those two lines.