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(Yet another) Arduino - it is small though

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niekproductions:


This is the BareDuino Nano, measuring only 21x14mm.

Since I’m on a student budget, I couldn’t afford to leave an actual Arduino into my projects, so I designed, etched and assembled the BareDuino classic. I can quickly throw one into a project without having to worry about using an expensive regular Arduino.

Using the experience I earned from the original BareDuino, I started the BareDuino Nano project at the age of 13. I saw Fabio Varesano’s Femtoduino and really liked the idea, so I set myself the challenge of making it even smaller. Needless to say I’ve succeeded. In order to make it smaller, I had to use 0402 resistors and capacitors (which were a pain to hand-solder) and use 1.27mm spaced headers.

Because I was working with such small components, I had to use solderpaste and a soldering oven to get it right.  For assembling earlier revisions, I tried to apply the solderpaste by hand but it just wouldn’t work well enough/at all. Eventually I went over to a nearby FabLab and laser-cut some stencils for applying the solder paste. Here’s a video of the process.

At the beginning of July, Seeed Studio started manufacturing and selling my BareDuino Nano! It was really nice working with them. There were a couple of errors on my side, but they helped me solve them.

I didn't build this to get credit, I love challenges. I finished a working prototype within half a year, and the challenge was gone. It was only 2 years later that I picked it up again and decided to try and get it sold.


Design files, part list etc.

riktw:
That looks really nice, only downside I see is that it is as expensive as a regular Arduino again :)
It is however really small and the silkscreen on the back is nice.

moon:

--- Quote ---In order to make it smaller, I had to use 0402 resistors and capacitors (which were a pain to hand-solder) and use 1.27mm spaced headers.
--- End quote ---
really resistors and capacitors size was bottle neck for pcb size  ;D

niekproductions:

--- Quote from: moon on October 07, 2013, 03:33:35 pm ---
--- Quote ---In order to make it smaller, I had to use 0402 resistors and capacitors (which were a pain to hand-solder) and use 1.27mm spaced headers.
--- End quote ---
really resistors and capacitors size was bottle neck for pcb size  ;D

--- End quote ---

Plus the QFN atmega328, regulator and crystal of course  :palm:

c4757p:
That board can't fit 0603s? Hell, it looks like it could fit 0805s if you move a couple traces.

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