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61  Using Arduino / Microcontrollers / Re: HOW CAN I MAKE VOLTAGE TESTER WITHOUT USING ATMEL CHIP ??? on: July 01, 2014, 07:15:48 am
Maybe something like this:

http://www.hobbyking.com/hobbyking/store/__18588__Hobbyking_2_8S_Cell_Checker_with_Low_Voltage_Alarm.html
62  Community / Exhibition / Gallery / Re: Futaba SBUS reverse engineered to work with Arduino on: June 25, 2014, 04:24:53 am
@nique

I have used the library with a FrSky X8R.

It works very well, see the test sketch below for an example I use on a Mini Pro.
The only problem with that is that I can't get any debug output, so I used a 1284 board to test as it has two hardware serial ports.

Quote
FrSky works already inverted.

Yes, and therefor you need an inverter I have tried a 74hc14 or just a transistor with two resistors
Ans I use 3.3V on the Pro Mini to avoid logic level converter
Code:
// for using mini with one serial
// change SBUS.h line 12 for normal Arduino
// #define port Serial1 --for  Arduino with more than one Serial port
// #define port Serial --for normal Arduino with one Serial port

#include <FUTABA_SBUS.h>
#include <Servo.h>

FUTABA_SBUS sBus;
Servo myservo;

void setup(){
  sBus.begin();
  myservo.attach(14);
}

void loop(){
  sBus.FeedLine();
  if (sBus.toChannels == 1){
    sBus.UpdateServos();
    sBus.UpdateChannels();
    sBus.toChannels = 0;
    myservo.writeMicroseconds(sBus.channels[6]+800);
  }
}

63  Using Arduino / Microcontrollers / Re: ATTiny87 core? on: June 11, 2014, 09:04:19 am
Maybe you could use ATtiny861 .
It comes in DIP and is supported by Tom Carpenters core
64  Using Arduino / Microcontrollers / Re: PWM Controller on: June 11, 2014, 09:02:11 am
You could try this library for pwm freqence

http://forum.arduino.cc/index.php?topic=117425.0
65  Using Arduino / Microcontrollers / Re: ATTiny87 core? on: June 10, 2014, 03:01:39 pm
Take a look at this:

Quote
Currently the following processors are supported:

ATtiny84,44,24
ATtiny85,45,25
ATtiny861
ATtiny87/167
ATtiny2313

https://github.com/TCWORLD/ATTinyCore
66  Using Arduino / Microcontrollers / Re: Arduino IDE and ATTiny45 on: June 10, 2014, 01:36:16 pm
If you use this core for the tiny:

https://code.google.com/p/arduino-tiny/

You can choose between ARduino 1.xx and 1.5XX
67  Using Arduino / Microcontrollers / Re: ATTiny84 and software serial problems on: June 10, 2014, 01:33:36 pm
If you use the tiny core you mention, the output from TinyDebugSerial will be PA1 (physical pin 12)
on the ATtiny84.

If you connect that pin to your Arduino pin TX->1 (and put a wire from reset to ground on your Arduino)
you should see the output.
68  Using Arduino / Microcontrollers / Re: analog read on attiny13 on: March 20, 2014, 07:00:01 am
Which core are you using ?

If you are using  smeezekitty core, and you connect the potmeter wiper to pin PB4, you are using ADC2.

So this line

Code:
int potPin = 4;

should be

Code:
int potPin = 2;
69  Using Arduino / Microcontrollers / Re: Attiny85 voltage issie on: March 16, 2014, 10:47:33 am
What I would do when debugging a problem like this is to isolate the problem.
In this case I would make a sketch that only read the ADC pins to see if it was only pin PB3 that was acting strange.
(try PB2 and PB4 aswll)

Quote
Thanks! Is there an error in there though?

  // int reading = analogRead(PIN_TEMP);
  reading=5;
The code example was meant to test the pwm pins only, as I thought you had a problem with them.
Sorry for the confusion (in the future I will promise myself not to confuse people in here )
70  Using Arduino / Microcontrollers / Re: Attiny85 voltage issie on: March 14, 2014, 11:06:52 am
Quote
Bearing in mine 0,1,4 I have to use as I believe they are the only ones with PWM.

That's right.
The analog pins are numbered after the ADC numbers

Analog (ADC) pins are PB2 (A1), PB4 (A2) and PB3 (A3) (physical 7,3 and 2)
so for example:

Code:
int val=analogRead(2); // Reads ADC value on pin PB4
To test your circuit and the use of the right pins you could try this simplified version

Code:
#define PIN_RED 0
#define PIN_GREEN 1
#define PIN_BLUE 4
#define PIN_TEMP 3 // analog read from ADC3 - pin PB3

void setup()
{

}

void loop()
{
  // int reading = analogRead(PIN_TEMP);
  reading=5;
  for (int r = 0; r < 256; r++) {
    analogWrite(PIN_RED, r);
    analogWrite(PIN_BLUE, r);
    analogWrite(PIN_GREEN, r);
    delay(reading);
  }
  // fade from violet to red
  for (int b = 255; b > 0; b--) {
    analogWrite(PIN_RED, b);
    analogWrite(PIN_BLUE, b);
    analogWrite(PIN_GREEN, b);
    delay(reading);
  }

}
71  Using Arduino / Microcontrollers / Re: Attiny85 voltage issie on: March 14, 2014, 09:16:01 am
I get no errors when compiling and I am not surprised.

I use this core:
https://code.google.com/p/arduino-tiny/

This code:

Code:
void setup() {
Serial.begin(9600);
}

void loop() {
Serial.println("Testing..");
}

Is how you use TinyDebugSerial on ATtiny85 (and 84/2313).
The output will be on pin PB3

@wudzi : which core are you using

Quote
Then there's a problem with your installation.

@fungus: the fact that I am not using the same core as you dosn't mean there
is a problem with my installation.
72  Using Arduino / Project Guidance / Re: Can I use Spi and ethernet simultaneously in Arduino Yun on: March 12, 2014, 02:46:04 pm
The Arduino Yun has two processors.
You can see it as a Arduino Leonardo handling the SPI, and the other chip AR9331 which handles the Ethernet communication.

So yes you can handle both
73  Using Arduino / Motors, Mechanics, and Power / Re: digital servo communication protocol on: March 11, 2014, 10:35:16 am
You could take a look at Futaba's S-Bus

http://forum.arduino.cc/index.php/topic,99708.0.html
74  Topics / Robotics / Re: PID to control robot move in straight line!!!! urgent please on: March 11, 2014, 05:39:50 am
solderspot
Thank you for your link and blogpost,
well written and understandable for a PID beginner like me
75  Using Arduino / Microcontrollers / Re: Arduino Uno ISP and ATTINY2313 LED not blinking on: March 09, 2014, 03:33:48 pm
Quote
But the led on Pin 13 (PB1) of ATTINY2313 is not blinking

As mentioned in the instructions : pin 13 is PB4  or physical pin 16
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