BareDuino Micro



For some Arduino projects, you don’t actually need that many IO pins. That’s exactly the case when I tried to build a simple RGB throwie that would cycle through colours. I was looking for a cheaper alternative to the Arduino UNO’s ATmega328P when I stumbled across this post by MIT’s High-Low Tech lab. They developed a library for programming the 8-pins ATtiny45/85 from the Arduino IDE. It’s a very smart solution to use permanently in some low pin-usage projects, but you still need to hook up individual wires from your programmer to the ATtiny to be able to program it. That’s when I came up with the idea of the BareDuino Micro.

The BareDuino Micro solves this problem. It’s got an ATtiny45 or 85, on-board ISP header for easy reprogramming, a power LED and battery connections. The pins are all broken out in the same way as the DIP packaged ATtiny, so you can easily plug it into a breadboard. I originally designed the board for a personal project, but the design files are available at the GitHub repository. I still have some unpopulated PCB’s lying around. If you’d like to have one of them, please contact me [UPDATE: ONLY 2 BOARDS LEFT].

Author: Niek Blankers Comments: 24 comments Date: 17 Jul 2013
Categories: Arduino, Attiny, BareDuino Tags:

There are 24 comments

  • ¬ martin buskirk
    #3 August 9th, 2013 at 3:54 pm

    I’d love to get ahold of one of your unpopulated boards if you have any lying around. I have a small collection of bare bones arduinos and your’s hits my minimalist vein. thanks.

  • ¬ Niek Blankers
    #4 August 9th, 2013 at 4:02 pm

    Sure, I’ve sent you an email

  • ¬ britesc
    #5 August 10th, 2013 at 12:10 am

    If you have any boards left I would love one please?

  • ¬ Michal
    #6 August 10th, 2013 at 12:29 am


    Awesomely economical! I’d also be very interested in a board or two. Are you able to send two to Australia? They should easily fit in an envelope 😛 How much might that cost?


  • ¬ Niek Blankers
    #7 August 10th, 2013 at 12:40 am

    Michal and britesc of course! popped you two an email.

  • ¬ Hiroshi
    #10 August 10th, 2013 at 1:50 am

    Could you give me one PCB?

  • ¬ netrafter
    #11 August 10th, 2013 at 5:28 pm

    Get me one or two, if you have any left.

  • ¬ Simon
    #12 August 12th, 2013 at 4:17 pm

    Have you any of the unpopulated pcb’s left or have I missed the boat? 😉

  • ¬ Niek Blankers
    #16 August 14th, 2013 at 4:08 pm

    The boat’s almost departing, only 3 boards left!

  • ¬ Key Qualities for a school Makerspace and Bareduino | Electronics and Education
    #13 August 13th, 2013 at 8:29 pm

    […] In other news, Niek Blankers at NiekProductions posted schematics for a bareduino, an arduino compatible based off of the ATiny45/85 that uses a small circuit board and minimal support components. It may be something that i could use if I wanted to have a separate controller that looked for tags, say on someone's head. His post is here. […]

  • ¬ Nial Pearce
    #14 August 14th, 2013 at 12:16 am

    I am looking at getting a bunch of these printed for a project im working on.
    Im having problems as one of the traces on the bottom of the board is 0.12mm too close to the through holes taking the breakout trace through the board to one of the broken out pins.
    Looking at the board from the bottom it is the 3rd and 4th pins from the left, were the 3rd pin goes through the board right next to the trace. Its only 0.088mm apart and needs to be 0.1mm minimum.
    Any chance someone could shift that trace around the hole a little further out? I have no experience editing PCB Gerbers and dont have Eagle.

  • ¬ Niek Blankers
    #15 August 14th, 2013 at 11:21 am

    Here’s a picture of the board. Please highlight the trace you mean and I’ll get right on it!

  • ¬ Nial Pearce
    #17 August 14th, 2013 at 4:25 pm

    Its the one on the bottom layer I have circled and its where it runs by the through hole. It just needs moving out by a tiny bit.
    Thank you!

  • ¬ Nial Pearce
    #19 August 14th, 2013 at 7:58 pm

  • ¬ Niek Blankers
    #20 August 15th, 2013 at 5:28 pm

    I didn’t notice any errors, so I just re-drew the board so that it checks out with Seeed’s fusion PCB service. The updated design files and gerbers are in the GitHub repo.

  • ¬ Martin Kennedy
    #21 August 19th, 2013 at 5:19 pm

    Hi Niek,

    Any chance of getting one/two of your boards if there are any left?


  • ¬ Hiroshi
    #22 August 21st, 2013 at 9:59 am

    I got your PCB today.

  • ¬ Niek Blankers
    #23 August 22nd, 2013 at 10:43 am

    Great! I saw your tweet 🙂

  • ¬ Michal
    #24 August 23rd, 2013 at 5:30 am

    Hi Niek,

    I too got the PCB’s today. Stil waiting for a couple of ATtiny’s to arrive so I can make my first SMD soldering attempt 😛 I didn’t realise just how small they were!

    Thank you.

  • ¬ Juan Novelo
    #28 March 18th, 2014 at 6:01 pm

    Hi Niek! First of all congratulations on all of your great efforts! You are an example to many young people! My name is Juan and I am the editor in chief of Gazzetta AMESE a trimestral magazine published by the Mexican Association of Embedded Software, I came across your amazing developments in the web and I am very interested in publishing a full insight review of your BareDuino board in the magazine. If it is a possibility I would also like to do a brief interview with you via email or skype to be featured in our website. The board has been shared on our social nets to spread the word and hopefully get you many costumers. Feel free to check out our website or hit us up on Facebook ( or Twitter (@AMESE_Oficial). Keep up the amazing work!

    Cheers, Juan.

  • ¬ Niek Blankers
    #29 March 18th, 2014 at 7:16 pm

    Awesome! I’ll shoot you an email

  • ¬ Krist Norlander
    #32 May 23rd, 2014 at 7:49 am

    last night I was thinking about doing exactly what you did. I opened EagleCAD to start drawing…and thought, why not start with something already done like and Arduino schematic or a “Bare Arduino”. Did a google search on “bareduino eaglecad” and yours was top of the list.

    Then, I see you might have some available, rather than me shipping an order of to OSH Park.

    Any chance you still have one that I can acquire?


  • ¬ Niek Blankers
    #33 May 24th, 2014 at 9:19 pm

    I’m sorry, I don’t have any boards left for you. That said, a board this size should only cost you a couple of dollars on OSHpark.

  • ¬ Sunny M
    #37 November 21st, 2014 at 12:40 pm

    Can you share the details about do it yourself about this.
    I am looking forward to spread this to hobbiest teenagers to promote the creativity & interest in embedded technology.

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