# Week 8 Update

What was accomplished: 

<figure><img src="/files/wM7EXeZUlx2VEjG91qMl" alt=""><figcaption></figcaption></figure>

* assembled stepper motor electronics setup, and updated arduino code so that it would revolve precisely ONCE(should work on the final assembly, since we are using the same stepper motor) WITH a button setup
* re-designed spin coater CAD on onshape
* planned out a roadmap on how to assemble electronics(have a single arduino mega controlling everything, or find a way to "link" smaller microcontrollers together)

<div><figure><img src="/files/oH9fo6MnCfB1YosfHgV5" alt=""><figcaption></figcaption></figure> <figure><img src="/files/zuMCeM09jBd9tWQtnnmL" alt=""><figcaption></figcaption></figure></div>

Roadblocks/issues:

* The cable that needs to be used is micro usb, and there are no cables that I could find that directly connect onto my labtop(only has C cable connections, not sure if there is a micro usb -> usb c cable)
* The stepper motor requires a different voltage from the microcontroller, so either a second power supply is needed for the microcontroller, or a voltage de-regulator(12v to 5v) is required in the electronics setup

TO DOs:

* Once syringe arrives, take measurements of it, before modifying 3d printed parts in previous cad according to those measurements, and begin testing


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