In this lesson we develop a project that allow Remote Control of the speed and direction of a DC Motor. We use an Arduino Nano, and components from the Elegoo Kit. Also, to facilitate a clean build, we use Straight Jumper Wires.
The motor is connected according to this schematic:
Also, the remote control receiver is connected as follows: R on Remote to 5V, G on Remote to Ground, and Y on the Remote to Arduino Digital Pin 9. Go back and check out Tutorial 65 if you need more details on the Remote Module Connections.
In this video we will take you step by step through the build and coding for the project.
The code below is the software we developed in the video.
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#include <IRremote.h> int IRpin=9; IRrecv IR(IRpin); decode_results cmd; String myCom; int speedPin=5; int dir1=4; int dir2=3; int mSpeed=255; void setup() { Serial.begin(9600); IR.enableIRIn(); pinMode(speedPin,OUTPUT); pinMode(dir1,OUTPUT); pinMode(dir2,OUTPUT); digitalWrite(dir1,HIGH); digitalWrite(dir2,LOW); } void loop() { while (IR.decode(&cmd)==0){ } delay(1500); IR.resume(); if (cmd.value==0xFF6897){ myCom="zero"; Serial.println(myCom); } if (cmd.value==0xFF30CF){ myCom="one"; Serial.println(myCom); } if (cmd.value==0xFF18E7){ myCom="two"; Serial.println(myCom); } if (cmd.value==0xFF7A85){ myCom="three"; Serial.println(myCom); } if (cmd.value==0xFF10EF){ myCom="four"; Serial.println(myCom); } if (cmd.value==0xFF38C7){ myCom="five"; Serial.println(myCom); } if (cmd.value==0xFF5AA5){ myCom="six"; Serial.println(myCom); } if (cmd.value==0xFF42BD){ myCom="seven"; Serial.println(myCom); } if (cmd.value==0xFF4AB5){ myCom="eight"; Serial.println(myCom); } if (cmd.value==0xFF52AD){ myCom="nine"; Serial.println(myCom); } if (cmd.value==0xFFA25D){ myCom="pwr"; Serial.println(myCom); } if (cmd.value==0xFF629D){ myCom="v+"; Serial.println(myCom); } if (cmd.value==0xFFE21D){ myCom="fun"; Serial.println(myCom); } if (cmd.value==0xFF22DD){ myCom="rew"; Serial.println(myCom); } if (cmd.value==0xFF02FD){ myCom="play"; Serial.println(myCom); } if (cmd.value==0xFFC23D){ myCom="ff"; Serial.println(myCom); } if (cmd.value==0xFFE01F){ myCom="dn"; Serial.println(myCom); } if (cmd.value==0xFFA857){ myCom="v-"; Serial.println(myCom); } if (cmd.value==0xFF906F){ myCom="up"; Serial.println(myCom); } if (cmd.value==0xFF9867){ myCom="eq"; Serial.println(myCom); } if (cmd.value==0xFFB04F ){ myCom="st"; Serial.println(myCom); } if (myCom=="pwr"){ digitalWrite(dir1,LOW); digitalWrite(dir2,HIGH); analogWrite(speedPin,255); } if (myCom=="fun"){ digitalWrite(dir1,LOW); digitalWrite(dir2,HIGH); analogWrite(speedPin,0); } if (myCom=="ff"){ digitalWrite(dir1,LOW); digitalWrite(dir2,HIGH); analogWrite(speedPin,mSpeed); } if (myCom=="rew"){ digitalWrite(dir1,HIGH); digitalWrite(dir2,LOW); analogWrite(speedPin,mSpeed); } if (myCom=="up"){ mSpeed=mSpeed+15; if (mSpeed>255){ mSpeed=255; } analogWrite(speedPin,mSpeed); } if (myCom=="dn"){ mSpeed=mSpeed-15; if (mSpeed<0){ mSpeed=0; } analogWrite(speedPin,mSpeed); } } |