How to Get Started with ATTiny85 in Arduino IDE

Introduction

I have this little tiny microcontroller lying around for some time in my bins. I purchased this out of curiosity but not able find time to try. Yesterday, I saw it again and I decided to give it a try. So here it is.

For the datasheet you may refer to:
https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2586-AVR-8-bit-Microcontroller-ATtiny25-ATtiny45-ATtiny85_Datasheet.pdf

For the schematic and pinouts, you may refer to:
https://s3.amazonaws.com/digispark/DigisparkSchematicFinal.pdf

And for more details, you may refer to the Digistump wiki:
https://digistump.com/wiki/digispark?redirect=1

Instruction

1. USB Driver Installation for Digispark ATTiny85 Development Board:
a. Install the USB driver from:
https://github.com/digistump/DigistumpArduino/releases
and look for Digistump.Drivers.zip and download it
b. Uncompressed the downloaded Digistump.Drivers.zip
c. Look for DPinst (if you are in Windows 32-bit) or DPinst64 (if you have 64-bit Windows) and install it.
2. Arduino IDE Preparation for ATTiny85:
a. You may follow the Digistump wiki in:
https://digistump.com/wiki/digispark/tutorials/connecting
or you may follow me by opening the Arduino IDE.
b. Click File menu
c. Then select Preferences
d. And in the “Additional Boards Manager URL:” add the following:
http://digistump.com/package_digistump_index.json
e. Click OK.
3. Install the Digistump Board Manager
a. Click the “Tools” menu
b. Select “Board”
c. Then click the “Boards Manager”
d. In the search box type “digistump”
e. Install the Digistump AVR Boards

Now the Arduino IDE should be ready for the ATTiny85 coding.

Video Demonstration

Call To Action

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Thank you and have a good days ahead.

Happy tinkering.

Source Code

Example 1

1Blink example from Arduino IDE > File menu > Examples > Basics > Click Blink

Example 2, Blink the onboard LED using direct port manipulation

 1// the setup function runs once when you press reset or power the board
 2void setup() {
 3  // initialize digital pin LED as an output.
 4  //pinMode(LED_PIN, OUTPUT);
 5  DDRB |= 0B00000010;
 6}
 7
 8// the loop function runs over and over again forever
 9void loop() {
10  //digitalWrite(LED_PIN, HIGH);   // turn the LED on (HIGH is the voltage level)
11  PORTB |= 0B00000010;	           // turn the LED on using port manipulation
12  delay(50);                       // wait for 50ms
13  //digitalWrite(LED_PIN, LOW);    // turn the LED off by making the voltage LOW
14  PORTB &= 0B11111101;	           // turn the LED off using port manipulation
15  delay(50);                       // wait for 50ms
16}