Making It Miniature: Integrating the ATtiny85 in Your Arduino Project

It almost looks like a bug!

2.7–5.5V Voltage Range

The ATtiny85 (little black square) and a screen can be run on a coin cell.

Sips Power

An ATtiny85 sensor node connected to an I2C bus (4 total wires/bus).

Plenty of Ways to Communicate

Easy to Program

Goes Great with PCBs

Part of a (Big) Family

Disadvantages

Tips for Using the ATtiny85 in Your Project

When using the ATtiny, keep in mind the following points:

  • Serial.print() is not available, and your code will not compile if it’s included
  • Many libraries such as Wire are not directly compatible with the ATtiny family
  • There are many substitution libraries available to replace ATtiny-incompatible libraries, such as TinyWireM
  • As a general rule of thumb try and keep current consumption per pin under 20 mA
  • To keep pin current low, use devices like transistors or relays to switch power to hungry components

Hackster Projects With the ATtiny85

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I'm a Harvard student, maker, and radio enthusiast. Check out my book on radio communications at amzn.to/341cywA and my website at www.AlexWulff.com

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Alex Wulff

Alex Wulff

I'm a Harvard student, maker, and radio enthusiast. Check out my book on radio communications at amzn.to/341cywA and my website at www.AlexWulff.com

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