Use 2512 SMD resistors in place of strain gauges (#104)

As suggested in https://github.com/scottbez1/smartknob/issues/24#issuecomment-1073540944 and inspired by https://github.com/IvDm/Z-probe-on-smd-resistors-2512, this adds 4x 330 ohm 2512 SMD resistors to the back to act as strain gauges, rather than requiring discrete strain gauges to be glued and wired up.

Also applies a few changes I accidentally had pending locally:
- Custom footprints for the 2 3.3v LDO options to clarify the pinout options
![image](https://user-images.githubusercontent.com/414890/204078474-8327e8ed-78b5-4fe3-a91d-9c20fe54fcbc.png)
- some BOM note updates

Fixes #24
Closes #33
This commit is contained in:
Scott Bezek 2022-11-27 10:07:35 -08:00 committed by GitHub
parent e3a5152390
commit 340eed936d
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4 changed files with 3293 additions and 2236 deletions

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