Cjerum.github.io/project3.html at main · CJerum/Cjerum.github.io · GitHub

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<body>
    <a href="/research.html" class="back-button">Back</a>
    <h1>THOR: Wireless Circuitboard Design (V2)</h1>

    <div class="highlight">
        <strong>Project Overview:</strong> Wireless-enabled PCB design for controlling three stepper motors, featuring RF communication, autonomous operation capabilities, and integrated power management.
    </div>

    <div class="section">
        <h2>PCB Layout</h2>
        <img src="./V2PCB_2D.png" alt="PCB 2D Layout" class="project-image">
        <p class="caption">2D PCB layout showing component placement and routing</p>

        <h3>Key Components:</h3>
        <ul>
            <li>RF Solutions ZETA-868-SO wireless module</li>
            <li>Three Pololu 2154 stepper motor drivers</li>
            <li>MP1584 buck converter for power regulation</li>
            <li>555 timer for autonomous stepping control</li>
            <li>Transistor arrays for motor sleep control</li>
        </ul>
    </div>

    <div class="section">
        <h2>3D Visualization</h2>
        <img src="./V2PCB_3D.png" alt="3D PCB Rendering" class="project-image">
        <p class="caption">3D rendering of the assembled PCB showing component heights and clearances</p>

        <h3>Board Specifications:</h3>
        <ul>
            <li>Dimensions: 100mm × 50mm</li>
            <li>Layer count: 2</li>
            <li>Power planes: Integrated ground plane</li>
            <li>Mounting: 4x M3 mounting holes</li>
        </ul>
    </div>

    <div class="section">
        <h2>Circuit Schematic</h2>
        <img src="V2PCB_Schematic.png" alt="Circuit Schematic" class="project-image">
        <p class="caption">(Semi-)Complete circuit schematic showing electrical connections and component values</p>

        <div class="highlight">
            <h3>Circuit Blocks:</h3>
            <ul>
                <li><strong>Power Management:</strong> Buck converter with dual power source support</li>
                <li><strong>Motor Control:</strong> Three independent stepper driver channels</li>
                <li><strong>Wireless:</strong> SPI-based RF communication</li>
                <li><strong>Logic:</strong> JK flip-flops and 555 timer for autonomous control</li>
            </ul>
        </div>
    </div>

<div class="section">
        <h2>System Architecture</h2>
        <img src="./V2PCB_Schematic.svg" alt="System Block Diagram" class="project-image">
        <p class="caption">Block diagram showing signal and power flow between components</p>

        <h3>Signal Flow:</h3>
        <ul>
            <li>Wireless commands received by ZETA module</li>
            <li>Command processing through logic circuitry</li>
            <li>Square wave generation for stepping</li>
            <li>Motor control signals distributed to drivers</li>
        </ul>
    </div>

    <div class="highlight">
        <h3>Technical Specifications:</h3>
        <ul>
            <li><strong>Input Power:</strong> 7-12V DC or 2S LiPo</li>
            <li><strong>Logic Level:</strong> 3.3V</li>
            <li><strong>RF Frequency:</strong> 868MHz</li>
            <li><strong>Step Frequency:</strong> 0.1-100 Hz (adjustable)</li>
            <li><strong>Control Interface:</strong> Sleep, Direction, and Step control per motor</li>
        </ul>
    </div>

    <div class="section">
        <h2>Current Status</h2>
        <p>PCB design is complete and initial prototypes have been assembled without considering wireless functionality. Testing has verified basic functionality of computer/stepper-motor/kinematic-mount interactions. Next steps include testing wireless capabilities, ordering professionally made PCBs, and furhter integration testing with the mechanical assembly.</p>
        </div>

    <div style="margin-top: 60px; padding-top: 20px; border-top: 1px solid #eee; font-size: 0.8em; color: #666;">
    <p>Documentation (HTML) formatted with assistance from Anthropic's <i>Claude</i>, an LLM</p>
    </div>
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