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646  Using Arduino / Microcontrollers / Re: Programming ATtiny13, Problems... on: January 22, 2013, 07:13:44 am
I have a guide for Attiny85
http://www.ernstc.dk/arduino/attiny85.html
and attiny2313
http://www.ernstc.dk/arduino/2313.htm

Maybe I should make one for Attiny13. On the other hand you have already done that!  smiley-grin
647  Using Arduino / Microcontrollers / Re: Trying to use Arduino Uno R3 as ISP for ATTiny2313 on: January 22, 2013, 04:43:23 am
Quote
When I try this with Arduino as ISP

That is the correct option.
I have updated the tutorial in http://www.ernstc.dk/arduino/2313.htm


648  Using Arduino / Project Guidance / Re: Need to build a rotating mirror like this on: January 21, 2013, 04:46:06 pm
Try a google search for pager motor, that is what is used in the link you supplied.

Pager motors are used in mobil phones, or pagers, to make them vibrate
649  Using Arduino / Microcontrollers / Re: Programming ATtiny13, Problems... on: January 21, 2013, 12:12:33 pm
It is just a warning that can be ignored.

Did you try the blink sketch?
650  Using Arduino / Microcontrollers / Re: Trying to use Arduino Uno R3 as ISP for ATTiny2313 on: January 20, 2013, 04:12:52 pm
I have no experience with OSX, but the principle should be the same.

Try doing an upload using the ArduinoISP to the Attiny2313, for example the blink sketch.

Enable verbose output: File->preference -> check the box: verbose during upload

You can now see how the Arduino IDE handles the upload.

On a Windows machine it looks something like this (stripped fot the path information)

avrdude -p t2313 -c arduino -P COM3 -b115200 -D -Uflash:w:Blink.hex:i

Now you can copy this line to a command line, and substitute the Blink.hex with the hex file you wnat to upload.

A guide to using Avrdude:

http://www.ladyada.net/learn/avr/avrdude.html
651  Using Arduino / Microcontrollers / Re: SoftwareSerial with ATTiny84 using ATtiny library on: January 19, 2013, 02:05:34 pm
Quote
I have it in still and it seems to be working fine. should I leave it?


As long as you use your Arduino as programmer, the capacitor between reset and ground should be connected.
It is there tp prevent your Arduino to reset and then starting the bootloader, instead of talking to the ArduinoISP.



652  Using Arduino / Microcontrollers / Re: ATtiny85 problem with arduino nano v3.0 on: January 19, 2013, 09:18:55 am
Maybe this one :

http://blog.tkjelectronics.dk/2012/03/attinyremote/
653  Using Arduino / Microcontrollers / Re: SoftwareSerial with ATTiny84 using ATtiny library on: January 19, 2013, 07:11:52 am
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The problem could be caused by the target running at 1 MHz with code built for a processor running at 8 MHz.

If it is of any help, I just tried a Attiny85 running at 1MHZ and selected board Attiny85 @ 8MHZ and got:

Quote
--- Knock-Bang fault: 11 ---

With the same target and selcting board Attiny85 @ 1MHZ it works as expected (Output to the serial monitor looks as it should)

654  Using Arduino / General Electronics / Re: Recommendations on getting things to blink? on: January 19, 2013, 06:47:47 am
http://www.cappels.org/dproj/simplest_LED_flasher/Simplest_LED_Flasher_Circuit.html

or even simpler, yoy can buy flashing LED's
655  Using Arduino / General Electronics / Re: 4 Wire servo motor on: January 18, 2013, 11:07:12 am
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the servo has more torque

That is generally because of the gearing, take a look at the inside of a rc servo:

http://en.wikipedia.org/wiki/Servo_(radio_control)

So, apart from the gearing (that in the end are connected to a potentiometer), you also need some electrtonics that translate the servo signal from your arduino, to something that can contol the motor/potentiometer

656  Using Arduino / General Electronics / Re: Driving a 1W star with a L317 on: January 18, 2013, 07:27:29 am
Take a look at this schematic by BillO

http://arduino.cc/forum/index.php/topic,102101.msg767419.html#msg767419

(reply #7)

You can use this LM317 calculator to calculate the resistor

http://www.reuk.co.uk/LM317-Current-Calculator.htm
657  Using Arduino / Sensors / Re: Read voltage drop from photoresister without a second resistor? on: January 17, 2013, 02:53:57 pm
Also pin x is connected to ground, so your reading will allways be zero
658  Using Arduino / Microcontrollers / Re: Creating your own application to program MCU on: January 17, 2013, 01:29:51 pm
Quote
How does the Arduino software talk to the bootloader

You can see that if you enable verbose output: File->preference -> check verbose during upload

It is something like this when uploading the blink hex file

avrdude -p atmega328p -c arduino -P COM3 -b115200 -D -Uflash:w:Blink:hex:i


659  Using Arduino / Sensors / Re: Measuring small capacitances on: January 17, 2013, 01:01:49 pm
This one claimes

About 1% accuracy, <2% error
Measuring range: 1pF - 500uF

https://www.sparkfun.com/products/9485?

And comes with a schematic.
660  Using Arduino / LEDs and Multiplexing / Re: ATtiny85 + TLC5940 on: January 17, 2013, 10:52:11 am
Thanks fungus, good to know those features i might not be so lucky
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