# Hardware

## Introduction

The HW needed to drive the OPU can be broken into 3 sections:

1. Motors
2. PMIC
3. Laser Diode

<figure><img src="/files/o5zVgKLa1XeCRda5qOPy" alt=""><figcaption></figcaption></figure>

## Preliminary PCB

OPU\_Driver\_rev0p1 PCB CAD capture has been completed and is up for review on github here:

{% @github-files/github-code-block url="<https://github.com/offbyfour/OPU_Driver/tree/main/Hardware/Kicad_PCB>" %}

{% file src="/files/tNUqExGDsRNcxlJodRjU" %}

The board has been roughly quoted on JLCPCB:

* PCB= \~$35.00 / Ea
* Components = \~ $110.00 / Ea

3x Assembled PCBs = $550

At this time no orders are planned until firmware is far enough along to confirm pin out and FPGA logic size.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.hackerfab.org/home/fab-toolkit/patterning/blu-ray-lithography/lithography-spinner-v1/hardware.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.