Published December 1, 2017 © Apache-2.0

RGB LED WITH DIGISPARK ATTINY85

This project shows how to use soft PWM to fade 3 colors in rgb led with usb development board

BeginnerFull instructions provided6,441

Things used in this project

Hardware components

DigiSpark

rgb led

Jumper wires (generic)

Software apps and online services

Arduino IDE

Story

When we want to do a simple project with a few pins,the arduino board is not suitable, because it is bulky. I want to use Rgb led for my project . So i decided to use digispark attiny 85 usb development board for the project. It is better then generic attiny 85 . It is very easy to program. In this way you can shrinkify your arduino projects with attiny85.

To program the digispark attiny85 we need to do something . The details are given below;

Installation Instructions:

First download the appropriate Arduino package at the Arduino.cc website: https://www.arduino.cc/en/Main/Software

If using Arduino 1.6.6 or higher and windows - you will need to download and install the drivers manually. Download, unzip and run “Install Drivers” (on 32bit systems) or “DPInst64” (on 64bit systems). If you get stuck, try following the steps shown in this YouTube video. The driver files are located here: https://github.com/digistump/DigistumpArduino/releases/download/1.6.7/Digistump.Drivers.zip

Install or Unzip the Arduino application.

Run the Arduino application.

In the Arduino application go to the “File” menu and select “Preferences”

In the box labeled “Additional Boards Manager URLs” enter:http://digistump.com/package_digistump_index.json

and click OK

Note: If you already have additional URLs entered in that box, then click the button on the right of the box and enter this URL on a new line.

Go to the “Tools” menu and then the “Board” submenu - select “Boards Manager” and then from the type drop down select “Contributed”:

Select the “Digistump AVR Boards” package and click the “Install” button.

You'll see the download progress on the bottom bar of the “Boards Manager” window, when complete it will show “Installed” next to that item on the list.

WINDOWS USERS: When complete the install with pop up a Driver Install Wizard window, please click “Next” on this Window to install the drivers for Digistump Boards (If you already have them installed, this installer will update them and install any that are missing)

With the install complete, close the “Boards Manager” window and select the Digispark from the Tools→Boards menu. “Digispark (Default - 16.5mhz)” is the board that should be selected by all new users.

The install is now complete! (Linux users see note below)

Linux Install

If you haven't before - Install the udev rules found here: Troubleshooting section

ATTENTION LINUX USERS: PLEASE CHECKOUT THE LINUX TROUBLESHOOTING PAGE**

Sources

Digistump Package Sources: https://github.com/digistump/DigistumpArduino

Using the Digispark with the Arduino IDE:

The Digispark works a bit differently than some Arduino compatible products. The Digispark programs with a different procedure.

From the Tools menu select Board→Digispark (Default - 16.5Mhz)

(The Tools→Programmer selection does not matter)

Write some code, open your code, or open a Digispark example.

You do not need to plug in your Digispark before invoking upload

Hit the upload button. The bottom status box will now ask you to plug in your Digispark - at this point you need to plug it in - or unplug and replug it.

You'll see the upload progress and then it will immediately run your code on the Digispark.

If you unplug the Digispark and plug it back in or attach it to another power source there will be a delay of 5 seconds before the code you programmed will run. This 5 second delay is the Digispark Pro checking to see if you are trying to program it.

Code

rgb led

#include <DigisparkRGB.h>
/*
 Digispark RGB
 
 This example shows how to use soft PWM to fade 3 colors.
 Note: This is only necessary for PB2 (pin 2) - Blue, as Red (pin 0) and Green (pin 1) as well as pin 4 support the standard Arduino analogWrite() function.
 
 This example code is in the public domain.
 */
byte RED = 0;
byte BLUE = 2;
byte GREEN = 1;
byte COLORS[] = {RED, BLUE, GREEN};

// the setup routine runs once when you press reset:
void setup()  { 
  DigisparkRGBBegin();
} 


void loop ()
{
//direction: up = true, down = false
boolean dir = true;
int i = 0;

while(1)
{
fade(COLORS[i%3], dir);
i++;
dir = !dir;
}
}
void fade(byte Led, boolean dir)
{
int i;

//if fading up
if (dir)
{
for (i = 0; i < 256; i++) 
{
DigisparkRGB(Led, i);
DigisparkRGBDelay(25);//1);
}
}
else
{
for (i = 255; i >= 0; i--) 
{
DigisparkRGB(Led, i);
DigisparkRGBDelay(25);//1);
}
}
}

Credits

Nekhil

22 projects • 100 followers

CEO @ CodersCafe | Maker | Hardware Hacker | Electronics Enthusiast

RGB LED WITH DIGISPARK ATTINY85

Things used in this project

Hardware components

Software apps and online services

Story

Installation Instructions:

Linux Install

Sources

Using the Digispark with the Arduino IDE:

Schematics

circuit diagram

Code

rgb led

Credits

Nekhil

Comments

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RGB LED WITH DIGISPARK ATTINY85

RGB LED WITH DIGISPARK ATTINY85

Things used in this project

Hardware components

Software apps and online services

Story

Installation Instructions:

Linux Install

Sources

Using the Digispark with the Arduino IDE:

Schematics

circuit diagram

Code

rgb led

Credits

Nekhil

Comments

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