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Custom building a smaller Netduino 2

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#1 Frode

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Posted 17 November 2014 - 08:15 PM

Hi guys!

 

I've been working on creating a smaller version of the Netduino for a while. I posted a version on the Fritzing website a few months ago, and since then I've made a new iteration. Here is a screenshot of the new version.

 

Attached File  2014-11-17 20.46.49.jpg   154.97KB   32 downloads

 

The board is 30mm x 54mm (1.18" x 2.13") and has pretty much the same functionality as the Netduino 2.

 

It can be powered via USB or the VIN pin.

All the same GPIO pins are there, but I've also added one more 3.3V and one more 5V output.

 

Compared to the original Netduino 2 it doesn't have IOREF, /RESET, the power barrel or the JTAG. The circuit on the original Netduino 2 which switches between the powerinput from USB or VIN has been replaced by a LTC4411 diode.

Attached File  2014-11-17 20.48.41.jpg   56.51KB   16 downloads

 

The board accepts the Netduino 2 firmware. Hold down the Firmware button while booting and run Netduino Update tool.

 

Thanks to Chris Walker for opensourcing the Netduino hardware! I'm including the Eagle 7.1 files if anyone wants to modify, or create their own versions.

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#2 Juzzer

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Posted 17 November 2014 - 09:08 PM

Good job :)



#3 CW2

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Posted 18 November 2014 - 02:45 PM

Very nice board !

 

Although, on the photo it seems that there are parts and traces very close to the mounting holes, maybe so close that the screw head could touch them or even cause some damage (?)



#4 Frode

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Posted 18 November 2014 - 03:08 PM

You are right, I'll have to fix that. Also, I probably need more decoupling capacitors for 5V and 3V3, I haven't included as many as the original Netduino 2.

 

If you see anything else that should be fixed I'm all ears. The next iteration is most likely going to be drawn in KiCad.



#5 xmen

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Posted 06 June 2016 - 03:50 AM

How did you upload firmware in it ?



#6 Frode

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Posted 30 June 2016 - 01:56 PM

Hmm, it's been a while, but I believe you do it the exact same way as on a regular Netduino. Did you make one of my boards?

 

Edit: See the comment in the original post; "The board accepts the Netduino 2 firmware. Hold down the Firmware button while booting and run Netduino Update tool."







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