# Part seems to have "internal connections"

**URL:** <https://forum.fritzing.org/t/part-seems-to-have-internal-connections/15201>\
**Category:** parts help\
**Created:** [February 15, 2022, 4:02pm UTC](https://forum.fritzing.org/t/part-seems-to-have-internal-connections/15201 "2022-02-15T16:02:19Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![vanepp](https://forum.fritzing.org/user_avatar/forum.fritzing.org/vanepp/32/4426_2.png) [@vanepp](https://forum.fritzing.org/u/vanepp)\
**Post date:** [February 15, 2022, 4:34pm UTC](https://forum.fritzing.org/t/part-seems-to-have-internal-connections/15201/2 "2022-02-15T16:34:48Z")

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You look to have not changed the bus definitions from the atmega32u4-qfn2 part you cloned from (the dip 40x2 part would probably be a better starting point though.) In the fzp file this section is not correct:

```
  <buses>
    <bus id="AVCC">
      <nodeMember connectorId="connector43"/>
      <nodeMember connectorId="connector23"/>
    </bus>
    <bus id="VCC">
      <nodeMember connectorId="connector33"/>
      <nodeMember connectorId="connector13"/>
    </bus>
    <bus id="GND">
      <nodeMember connectorId="connector42"/>
      <nodeMember connectorId="connector34"/>
      <nodeMember connectorId="connector22"/>
      <nodeMember connectorId="connector14"/>
    </bus>
  </buses>

```

presumably it is correct for the atmega32u4. I would start from the 40x2 dip part and replace the pcb svg with the one you used in this part (checking the pin numbers when you are done.) The following tutorials on parts making may help as well.

> [@Fritzing PART CREATION Video Tutorial Series](http://forum.fritzing.org/t/fritzing-part-creation-video-tutorial-series/2647):
>
> NEW FASTER PART MAKING VIDEOS AT THE BOTTOM-[Fritzing Parts Fast](https://forum.fritzing.org/t/fritzing-part-creation-video-tutorial-series/2647/19) ADVANCED FRITZING USER TIPS & TRICKS VIDEOS AT THE BOTTOM-[Fritzing Adv Tips & Tricks](https://forum.fritzing.org/t/fritzing-part-creation-video-tutorial-series/2647/15) A series of part creation videos - I’m not an expert, but there was nothing else around at the time. Use 1080p HD fullscreen to see details clearly - use gear symbol bottom right -. Recorded slowly for older people, so select a higher speed if it’s too slow. P.S. - Sorry about the voice/sound yum Fritzing Part Creation - Chapter1 - New Part …

> [@Part creation howto part 1 breadboard and pcb](https://forum.fritzing.org/t/part-creation-howto-part-1-breadboard-and-pcb/7692):
>
> Someone in this forum post requested help to fix up a part. So while doing that I decided to record what I needed to do in order to fix the part to provide a tutorial to create new / fix broken parts. If you start from the Tarjeta S4A EDU.fzpz file posted in the above thread, you should be able to recreate my improved part posted in the same thread. I started by loading the original part in to Fritzing, that indicates breadboard is (at first look anyway) pretty good, but schematic and pcb are…

Peter

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