Welcome to my week 12

OUTPUT DEVICES

Learning Outcomes:

  • Learnt how to use Eagle- PCB designing and Fabrication
  • Learnt SRM -20 (MONOFAB) settings
  • Learnt programming my board with fabISP .

    Brief

    - This week i connected Joystick as my input device and servo motor for my output devices on my self designed microcontroller board. This is related to my final project where whenever Joystick works it will turn servo motor and otherwise. I read about different input on Fab Academy , went through all the videos mentioned in the input devices.

    Getting started with Input devices

    My Assignment:-

    In this week literly I dont know what to design in the board so I got help from my friend and the I edited his design and then i milled the board.

    I idea is to connect joystick to my design board.

    So I Redesigned this in eagle.

    You can download my design files here

    After Redesigning my files steps: -

    - I used vpanel software for milling my design. as explained in Electronics production.

    so I tried a lot to program but I cant because there is a problem in my board.

    u can see the pic below.

    The track has gone thats why it was not programming.

    so I Redesigned a new pcb for output board of bldc and servo.

    So my idea is to make a remote for my RC car so in that way i can complete my output devices assignement.

    I stated milling of my pcb..

    So this is the final

    After soldering.

    For more details of how I made design click here

    • code:- 

    // Arduino pin numbers

#include 
#include 

Servo myservo;
Servo esc;
SoftwareSerial BTSerial(10, 11);
long int var ;
String data;
String valys = "0", valxs = "0";
int valy, valx;

void setup() 
{
  myservo.attach(8);
  BTSerial.begin(38400);
  Serial.begin(38400);
  esc.attach(5);
  esc.writeMicroseconds(1000);
  if (BTSerial.available() > 0)
  {
    data = BTSerial.readStringUntil('\n');
  }
  //Disregard the first reading
  data = "0";
}


void loop() 
{
 if (BTSerial.available() > 0)
  { 
    data = BTSerial.readStringUntil('\n');  
  }
  String payload = ""; 
  if (data != "0")
  {
    int offset = data.indexOf("U*"); //This is the header (0x552A)
    if (offset >= 0)
    {
      payload = data.substring(offset + 3, data.indexOf('\n'));
      char value = data.charAt (offset + 2);
      switch (value)
      {
        case 'A':
          valys = payload;
          break;
        case 'B':
          valxs = payload;
          break;
      //Add more case as the project grow
      }
    }
  }
  //convert strings to float
  valy = valys.toInt();
  valy = map(valy, 0, 1024, 110, 255);
  valx = valxs.toInt();
  Serial.println(valx);
  Serial.println(valy);
  myservo.write(valx);
  esc.write(valy);
 
}

    Before I test my servo in My board i wanted to test in Arduino

    I attched i examples below.

    Testing on arduino

    I was using joystick as input and it is working wireless...

    My Bldc motor and servo is working.

    Now I should try in my board which I have designed.