Forked from EinsteinUnicorn/2WD Arduino with Bluetooth
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March 2, 2022 09:57
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| /* Becky Button. This code is made such that the motor 1 (m1p1 m1p2) is on the left and Motor 2 (m2p1, m2p2) is on the right. | |
| I will be posting an instructables soon on how to make this work, with all of the schematics and such.*/ | |
| int m1Pin1 = 3; // pin 2 on L293D IC | |
| int m1Pin2 = 4; // pin 7 on L293D IC | |
| int enablePinm1 = 5; // pin 1 on L293D IC | |
| int m2Pin1 = 6; | |
| int m2Pin2 = 7; | |
| int enablePinm2; | |
| int state; | |
| int flag=0; //makes sure that the serial only prints once the state | |
| void setup() | |
| { | |
| // sets the pins as outputs: | |
| pinMode(m1Pin1, OUTPUT); | |
| pinMode(m1Pin2, OUTPUT); | |
| pinMode(m2Pin1, OUTPUT); | |
| pinMode(m2Pin2, OUTPUT); | |
| pinMode(enablePinm1, OUTPUT); | |
| pinMode(enablePinm1, OUTPUT); | |
| // sets enablePin high so that motor can turn on: | |
| digitalWrite(enablePin, HIGH); | |
| digitalWrite(enablePin, HIGH); | |
| // initialize serial communication at 9600 bits per second: | |
| Serial.begin(9600); | |
| } | |
| void loop() | |
| { | |
| //if some date is sent, reads it and saves in state | |
| if(Serial.available() > 0){ | |
| state = Serial.read(); | |
| flag=0; | |
| } | |
| // if the state is '0' the DC motor will turn off | |
| if (state == '0') { | |
| digitalWrite(m1Pin1, LOW); // set pin 2 on L293D low | |
| digitalWrite(m1Pin2, LOW); // set pin 7 on L293D low | |
| digitalWrite(m2Pin1, LOW); | |
| digitalWrite(m2Pin2, LOW); | |
| if(flag == 0) | |
| { | |
| Serial.println("off"); | |
| flag=1; | |
| } | |
| } | |
| // if the state is '1' the bot will turn right | |
| else if (state == '1') { | |
| digitalWrite(m1Pin1, LOW); // set pin 2 on L293D low | |
| digitalWrite(m1Pin2, HIGH); // set pin 7 on L293D high | |
| if(flag == 0){ | |
| Serial.println("Motor: right"); | |
| flag=1; | |
| } | |
| } | |
| // if the state is '2' the bot will turn left | |
| else if (state == '2') { | |
| digitalWrite(m1Pin1, HIGH); // set pin 2 on L293D high | |
| digitalWrite(m1Pin2, LOW); // set pin 7 on L293D low | |
| if(flag == 0){ | |
| Serial.println("Motor: left"); | |
| flag=1; | |
| } | |
| } | |
| } |
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