https://sovol.lexfrei.dev/zero/hardware/Recent content in Hardware on Sovol on mainline KlipperHugoen-ushttps://sovol.lexfrei.dev/zero/hardware/architecture/Mon, 01 Jan 0001 00:00:00 +0000https://sovol.lexfrei.dev/zero/hardware/architecture/<h1 id="system-architecture">System architecture<a class="anchor" href="#system-architecture">#</a></h1> <p>A reference description of the Sovol Zero as shipped, captured from the running machine — host filesystem, Klipper config, MCU runtime, git remotes. It exists to support the migration: knowing exactly what hardware and software is in play, and which pieces are vendor-specific versus stock.</p> <p>The Sovol Zero is a CoreXY printer, an industrialised derivative of the Voron 0, with a 150×150×150 mm build volume in a closed frame. It runs Klipper on a Linux host talking to multiple STM32 MCUs over CANbus. Internally Sovol calls it the &ldquo;SV08 mini&rdquo; — the vendor firmware package ships as <code>SV08mini_Update_Package-*.deb</code>, and it shares its CAN toolhead module with the SV08 Max — though it&rsquo;s sold only as the Sovol Zero.</p>https://sovol.lexfrei.dev/zero/hardware/toolhead/Mon, 01 Jan 0001 00:00:00 +0000https://sovol.lexfrei.dev/zero/hardware/toolhead/<h1 id="toolhead-pinout--swd-header">Toolhead pinout &amp; SWD header<a class="anchor" href="#toolhead-pinout--swd-header">#</a></h1> <p>Transcribed from Sovol&rsquo;s official pin definition (<code>Motherboard/Extra_Pin_definition.pdf</code> in <a href="https://github.com/Sovol3d/SOVOL-ZERO">Sovol3d/SOVOL-ZERO</a>) — see that PDF for the full labelled board image. The toolhead MCU is an STM32F103 (<code>extruder_mcu</code>), board silk <code>MINI-ZJB-V1.0</code>.</p> <h2 id="connectors">Connectors<a class="anchor" href="#connectors">#</a></h2> <table> <thead> <tr> <th>Connector</th> <th>Pins (as silk-screened)</th> </tr> </thead> <tbody> <tr> <td>Cooling fan</td> <td><code>24V</code> · PWM <code>PA6</code> · FG <code>PA1</code></td> </tr> <tr> <td>Fan (top)</td> <td><code>24V</code> · PWM <code>PA7</code> · FG <code>PA2</code></td> </tr> <tr> <td>Model fan</td> <td><code>24V</code> · PWM <code>PB0</code> · FG <code>PA3</code></td> </tr> <tr> <td>Nozzle thermistor</td> <td><code>PA5</code> · <code>GND</code></td> </tr> <tr> <td>Heating block</td> <td><code>GND</code> · <code>24V</code> · <code>PB1</code> · <code>GND</code> · <code>PA4</code></td> </tr> <tr> <td>Heater</td> <td><code>24V</code> · MC_HEATER <code>PB7</code></td> </tr> <tr> <td>24 V supply</td> <td><code>GND</code> · <code>24V</code></td> </tr> <tr> <td>Extruder motor</td> <td>DIR <code>PA9</code> · STEP <code>PA8</code> · EN <code>PA11</code> · UART <code>PA12</code></td> </tr> <tr> <td>X-axis limit</td> <td><code>PA10</code> · <code>GND</code> · <code>5V</code></td> </tr> <tr> <td>Limit / sensor</td> <td><code>5V</code> · <code>GND</code> · <code>PC15</code> · <code>PC14</code></td> </tr> <tr> <td><strong>Eddy current sensor</strong></td> <td><code>5V3</code> · <code>GND</code> · <strong><code>PB10</code> (SCL)</strong> · <strong><code>PB11</code> (SDA)</strong></td> </tr> <tr> <td>Mainboard comm (CAN)</td> <td>CANL · <code>GND</code> · CANH (CAN_R <code>PB8</code> · CAN_T <code>PB9</code>)</td> </tr> <tr> <td><strong>SWD header</strong> (silk <code>5V3 IO CK G</code>)</td> <td><code>5V3</code> = 3.3 V · <code>IO</code> = SWDIO (<code>PA13</code>) · <code>CK</code> = SWCLK (<code>PA14</code>) · <code>G</code> = GND</td> </tr> </tbody> </table> <p>The eddy sensor connector exposes <code>PB10</code>/<code>PB11</code>. On mainline Klipper drive the LDC1612 over <strong>software I2C</strong> on those pins, not hardware <code>i2c2</code> — see <a href="https://sovol.lexfrei.dev/zero/application/klipper-config/">the Klipper config page</a>.</p>