int rosso1 = 2; int giallo1 = 3; int verde1 = 4; int rosso2 = 5; int giallo2 = 6; int verde2 = 7; void setup () { pinMode(rosso1, OUTPUT); pinMode(giallo1, OUTPUT); pinMode(verde1, OUTPUT); pinMode(rosso2, OUTPUT); pinMode(giallo2, OUTPUT); pinMode(verde2, OUTPUT); } void loop () { digitalWrite (rosso1, HIGH); digitalWrite (verde2, HIGH); digitalWrite (rosso2, LOW); delay (5000); digitalWrite (giallo2, HIGH); delay (5000); digitalWrite (rosso1, LOW); digitalWrite (verde1, HIGH); digitalWrite (verde2, LOW); digitalWrite (giallo2, LOW); digitalWrite (rosso2, HIGH); delay (5000); digitalWrite (giallo1, HIGH); delay (5000); digitalWrite (verde1, LOW); digitalWrite (giallo1, LOW); }