Introduction

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

1. Motors

2. PMIC

3. Laser Diode

Preliminary PCB

OPU_Driver_rev0p1 PCB CAD capture has been completed and is up for review on github here:

https://github.com/offbyfour/OPU_Driver/tree/main/Hardware/Kicad_PCB

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.

Introduction

In order to develop the SW for Texas Instruments TPIC2050 and test a good bit of the system, the BU40N blu-ray module was chosen for early development. Although available online, this module may not be available for long which is what disqualifies it from general use. Removing the MT1950 chip allows access to a lot of the pins of interest. Powering it is also relatively simple as it should only need 5V.