Solusi Mudah untuk Sepeda Motor Bermesin Berisik

 Suara motor berisik memang mengganggu, entah itu karena mesin yang sudah lewat waktunya untuk ganti oli, bagian-bagian fairing, spatbor, sadel yang baut atau mur-nya sudah longgar sehingga bunyi gemeletuk saat di jalan tak rata maupun suara rantai yang entah kapan terakhir kali di kasih minyak dan sudah super kendor.

Tapi untuk mengatasi masalah-masalah tersebut ternyata mudah saja dan saya menemukan ide tersebut secara tak sengaja saat pulang dari kampus kemarin sore.

Solusinya adalah dengarkan mp3, pasang earphone di telinga, setel agar suara musik terdengar agak sedikit keras sehingga bunyi dari luar tak terdengar dan jadilah seakan kita punya motor baru yang melaju mulus tanpa suara, :)

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Well Done, Chelsea

 :)

Jerez

The battle for second position at start is a bit like deja vu back to two week ago at Argentina, but apparently Rossi is losing front tyre grip and Marquez's pushing himself harder despite of his little finger injury.

So, Lorenzo, Marquez, Rossi.

Ups,  it's  Rossi's 200th podium,  :)

Scrolling LCD 16x2 First Row Only

 It's tricky but not impossible

 All I have to do is update the cursor position of second row so it seems still. :)





#include <SoftwareSerial.h>
#include <LiquidCrystal.h>

SoftwareSerial mySerial(8, 9); // RX, TX
int t=1;
int i=1;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);//rs e d4 d5 d6 d7
String tulisan = "Tadaa..., heheh...., hihihi :)";
String info =":)";
void setup() {
  pinMode(7,INPUT);
  pinMode(6,OUTPUT);
  pinMode(10,OUTPUT);
  pinMode(13,OUTPUT);
  lcd.begin(16, 2);
  lcd.print(tulisan);
  mySerial.begin(9600);
  delay(1000);
}


void loop() {
  //lcd.clear();
  if (digitalRead(7)==1){
    digitalWrite(10,HIGH);
  }else{
    digitalWrite(10,LOW);
  }
  if (mySerial.available()){
    digitalWrite(13,HIGH);
    while(mySerial.available()>0){
      tulisan=mySerial.readString();
      mySerial.println(tulisan);
    }
  }
  lcd.setCursor(1,0);
  lcd.print(tulisan);
  //scroll first row if text length's beyond 16
  int l= tulisan.length()-12;
  info ="P7=";
  info+=digitalRead(7);
  info+=",l=";
  info+=tulisan.length();
  lcd.setCursor(t,1);
  lcd.print(info);
  digitalWrite(13,LOW);
  lcd.scrollDisplayLeft();
  t++;
  if (t>=l){
    t=1;  
    lcd.clear();
  }
  delay(1000);
}
//PWM: 3, 5, 6, 9, 10, and 11

.

Agar output LCD hanya bagian atas saja yang scroll sedangkan yang baris kedua tetap diam.

Triknya adalah memberi LCD perintah scroll seperti biasa di arduino namun kita mengupdate posisi kursor di baris kedua agar tulisan selalu nampak di layar (dalam hal ini adalah string bernama 'info')

Read Digital Pin and Serial Message, Display it on LCD using Arduino

 In addition of my previous tinkering with LCD on arduino nano, I add a chunk of program to display the state of digital pin 7 on second row LCD.

I also remove the scroll command, package it as separate function but not called. I plan to using another scrolling method, some code without delay. (had it in mind, but still lazy to coding it, maybe next)




#include <softwareSerial.h>
#include<liquidCrystal.h>

SoftwareSerial mySerial(8, 9); // RX, TX

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);//rs e d4 d5 d6 d7
String tulisan = "Tadaa...";
String info =":)";
void setup() {
  pinMode(7,INPUT);
  pinMode(6,OUTPUT);
  pinMode(10,OUTPUT);
  pinMode(13,OUTPUT);
  lcd.begin(16, 2);
  lcd.print(tulisan);
  mySerial.begin(9600);
  delay(1000);
}


void loop() {
  if (digitalRead(7)==1){
    digitalWrite(10,HIGH);
  }else{
    digitalWrite(10,LOW);
  }
  if (mySerial.available()){
    lcd.clear();
    digitalWrite(13,HIGH);
    while(mySerial.available()>0){
      lcd.setCursor(0,0);
      tulisan=mySerial.readString();
      mySerial.println(tulisan);
      lcd.print(tulisan);
    }
  }
  
  //scLeft();
  //scRight();
  //scDef();
  info ="Pin7 = ";
  info+=digitalRead(7);
  
  lcd.setCursor(0,1);
  lcd.print(info);
  digitalWrite(13,LOW);
  delay(1000);
}

void scLeft(){
  for (int i = 0; i < tulisan.length(); i++) {
    lcd.scrollDisplayLeft();
    delay(150);
  }
}

void scRight(){
  for (int i = 0; i < (tulisan.length()+16); i++) {
    lcd.scrollDisplayRight();
    delay(150);
  }
}

void scDef(){
  for (int i = 0; i < 16; i++) {
    lcd.scrollDisplayLeft();
    delay(150);
  }
}
//PWM: 3, 5, 6, 9, 10, and 11

.

Menulis perintah ke baris pertama LCD via bluetooth, baris kedua digunakan untuk mengecek pin 7 (digital). Fitur scrill (di post sebelumnya dihilangkan, ada di bawah sebagai function tetapi tak dipanggil di program utama)

Displaying and Scrolling Text Typed via Serial Monitor on Arduino Nano

 Here we go. The challenge is reading serial data and store it in string, but fortunately there is readString command, :)

(I take the shoot from Photo Booth on my Mac)




#include <LiquidCrystal.h>

.

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);//rs e d4 d5 d6 d7
String tulisan = "Tadaa...";
void setup() {
  lcd.begin(16, 2);
  lcd.print(tulisan);
  Serial.begin(9600);
  delay(1000);
}

void loop() {
  if (Serial.available()){
    lcd.clear();
    while(Serial.available()>0){
      tulisan=Serial.readString();
      lcd.print(tulisan);
    }
  }
  // scroll 13 positions (string length) to the left
  // to move it offscreen left:
  for (int i = 0; i < tulisan.length(); i++) {
    // scroll one position left:
    lcd.scrollDisplayLeft();
    // wait a bit:
    delay(150);
  }

  // scroll 29 positions (string length + display length) to the right
  // to move it offscreen right:
  for (int i = 0; i < (tulisan.length()+16); i++) {
    // scroll one position right:
    lcd.scrollDisplayRight();
    // wait a bit:
    delay(150);
  }

  // scroll 16 positions (display length + string length) to the left
  // to move it back to center:
  for (int i = 0; i < 16; i++) {
    // scroll one position left:
    lcd.scrollDisplayLeft();
    // wait a bit:
    delay(150);
  }

  // delay at the end of the full loop:
  delay(1000);

}

.

Menampilkan dan men-scroll text yang diketik menggunakan monitor serial di arduino nano.

Tantangannya adalah membaca serial data dan menyimpannya sebagai string. Di versi lama, kita harus membaca komunikai serial sebagai char yang tentu saja sangat merepotkan. Untungnya kita mempunyai perintah readString, :)

Arduino Nano Clone on OS X Yosemite

 After subconsciously try it on my debian machine about a week, now when I have a chance to write on arduino IDE on my Macbook, it wont upload the sketch, no port for nano.

installing FTDI driver didn't help because it use CH340G chip for com.

Grab the driver from http://www.wch.cn/downloads.php?name=pro&proid=178

install it

restart,

no change, :(

found out that we have to run this on terminal

sudo nvram boot-args="kext-dev-mode=1"

reboot,

yup, the life is easier again, :)