Commit 44812302 authored by Zach Fredin's avatar Zach Fredin

added more apparatus details

parent 83238724
......@@ -262,6 +262,16 @@ void loop() {
}
}
```
The fabricated sensor board was designed in KiCad around a commonly available op-amp and photodiode:
![schematic](../img/apparatus_schematic.png)
... and laid out for single-sided PCB milling using a 1/64" mill:
![layout](../img/apparatus_layout.png)
After assembly, the PCBs required a bit of sanding for a snug fit in the finger sleeve. Prior to use, a cut piece of neoprene was adhered to one side to provide padding and a bit of finger size accomodation.
See my [NMM final project page](http://fab.cba.mit.edu/classes/864.20/people/zach/final.html) for a first pass at data analysis.
### Practical Considerations
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