<h1 id="firstHeading" class="firstHeading page-header" lang="en" style="box-sizing: border-box; font-size: 2.5em; margin: 10px 0px 15px; font-weight: 450; line-height: 1.2em; color: #333333; padding-bottom: 15px; border-bottom: 1px solid rgb(238, 238, 238); letter-spacing: -0.01em; background-color: #ffffff;"><span dir="auto" style="box-sizing: border-box;">HMMD mmWave Sensor</span></h1>
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                                 <td class="at-c textwhite" style="box-sizing: border-box; padding: 0px; color: #ffffff !important;"><b style="box-sizing: border-box; font-weight: bold;">HMMD mmWave Sensor</b></td>
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                                 <td class="at-c bgwhite" style="box-sizing: border-box; padding: 0px; background: rgb(255, 255, 255); margin: 5px;"><a href="https://www.waveshare.com/hmmd-mmwave-sensor.htm" target="_blank" rel="nofollow noreferrer noopener" style="box-sizing: border-box; background-color: transparent; color: #337ab7; text-decoration-line: none; line-height: 1.6;"><img alt="HMMD mmWave Sensor.jpg" src="https://www.waveshare.com/w/upload/thumb/a/ac/HMMD_mmWave_Sensor.jpg/300px-HMMD_mmWave_Sensor.jpg" decoding="async" loading="lazy" width="300" srcset="/w/upload/thumb/a/ac/HMMD_mmWave_Sensor.jpg/450px-HMMD_mmWave_Sensor.jpg 1.5x, /w/upload/thumb/a/ac/HMMD_mmWave_Sensor.jpg/600px-HMMD_mmWave_Sensor.jpg 2x" style="box-sizing: border-box; border: none; vertical-align: middle; max-width: 100%; height: auto;" /></a><br style="box-sizing: border-box;" /><br style="box-sizing: border-box;" /><small style="box-sizing: border-box; font-size: 12.8px;">HMMD mmWave Sensor<br style="box-sizing: border-box;" />GPIO, UART</small></td>
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            <h2 style="box-sizing: border-box; font-family: inherit; font-weight: 500; line-height: 45px; color: inherit; margin: 5px; font-size: 22px; padding: 0px 10px; background-color: rgba(247, 247, 247, 0.4); text-shadow: none;"><span class="mw-headline" id="Introduction" style="box-sizing: border-box; text-shadow: none; color: #7eb128; margin-left: -10px; padding: 8px 12px; border-left: 10px solid rgb(126, 177, 40) !important;">Introduction</span></h2>
            <p style="box-sizing: border-box; margin: 7.5px 16px; overflow-wrap: break-word; line-height: 1.8;">HMMD mmWave Sensor is a human micro-motion sensor that can detect and recognize moving, standing, and stationary human body. It is widely used in various AIoT scenarios, covering smart homes, smart security, smart businesses, and smart lighting, etc.</p>
            <h2 style="box-sizing: border-box; font-family: inherit; font-weight: 500; line-height: 45px; color: inherit; margin: 5px; font-size: 22px; padding: 0px 10px; background-color: rgba(247, 247, 247, 0.4); text-shadow: none;"><span class="mw-headline" id="Features" style="box-sizing: border-box; text-shadow: none; color: #7eb128; margin-left: -10px; padding: 8px 12px; border-left: 10px solid rgb(126, 177, 40) !important;">Features</span></h2>
            <ul style="box-sizing: border-box; margin: 0.3em 0px 0px 1.6em; padding: 0px;">
               <li style="box-sizing: border-box;">Comes with the Silicon Micro AIoT Millimeter-Wave Sensor SoC S3KM1110.</li>
               <li style="box-sizing: border-box;">Onboard high-performance 24GHz one-transmit-one-receive antenna and peripheral circuits.</li>
               <li style="box-sizing: border-box;">Mini module size: 20mm x 20mm.</li>
               <li style="box-sizing: border-box;">Pre-loaded with default human body sensing configuration, plug-and-play.</li>
               <li style="box-sizing: border-box;">Longest detection distance for motion human body sensing: 8.5m.</li>
               <li style="box-sizing: border-box;">Driven by the PY32F003F17U6TR microcontroller, with UART pins exposed for easy integration with Arduino/ESP32/JetsonNano and other main control boards.</li>
               <li style="box-sizing: border-box;">Utilizes human micro-motion sensing algorithms, millimeter-wave radar distance measurement technology, and advanced proprietary signal processing technology of the S3KM1110 chip.</li>
               <li style="box-sizing: border-box;">Provide online comprehensive supporting documentation (Raspberry/JetsonNano/Arduino/ESP32/sample demos).</li>
               <li style="box-sizing: border-box;">Accurate perception of motion, micro-movement, and stationary human bodies achieved.</li>
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            <h2 style="box-sizing: border-box; font-family: inherit; font-weight: 500; line-height: 45px; color: inherit; margin: 5px; font-size: 22px; padding: 0px 10px; background-color: rgba(247, 247, 247, 0.4); text-shadow: none;"><span class="mw-headline" id="Specification" style="box-sizing: border-box; text-shadow: none; color: #7eb128; margin-left: -10px; padding: 8px 12px; border-left: 10px solid rgb(126, 177, 40) !important;">Specification</span></h2>
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               <li style="box-sizing: border-box;">Hardware
                  <ul style="box-sizing: border-box; margin: 0.3em 0px 0px 1.6em; padding: 0px;">
                     <li style="box-sizing: border-box;">Frequency Band: 24~24.25Ghz</li>
                     <li style="box-sizing: border-box;">Maximum Scanning Bandwidth: 0.25GHz</li>
                     <li style="box-sizing: border-box;">Maximum Equivalent Isotropic Radiated Power: 11dBm</li>
                     <li style="box-sizing: border-box;">Supply Voltage: 3.3V (3.0~3.6V Wide-range Voltage)</li>
                     <li style="box-sizing: border-box;">Dimensions: 20x20mm²</li>
                     <li style="box-sizing: border-box;">Environment Temperature: -40~85℃</li>
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               <li style="box-sizing: border-box;">System:
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                     <li style="box-sizing: border-box;">Detection Range (wall-mount): Motion human body target 10m; Micro-motion human body target 6m</li>
                     <li style="box-sizing: border-box;">Detection Range (ceiling-mount): Motion human body target 5m; Micro-motion human body target 4m</li>
                     <li style="box-sizing: border-box;">Detection Accuracy: 0.15m (for moving targets within 10m straight-line distance from the radar)</li>
                     <li style="box-sizing: border-box;">Average Operation Current: 50mA</li>
                     <li style="box-sizing: border-box;">Data Refresh Period: 100ms</li>
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            <h2 style="box-sizing: border-box; font-family: inherit; font-weight: 500; line-height: 45px; color: inherit; margin: 5px; font-size: 22px; padding: 0px 10px; background-color: rgba(247, 247, 247, 0.4); text-shadow: none;"><span class="mw-headline" id="Hardware_Description" style="box-sizing: border-box; text-shadow: none; color: #7eb128; margin-left: -10px; padding: 8px 12px; border-left: 10px solid rgb(126, 177, 40) !important;">Hardware Description</span></h2>
            <p style="box-sizing: border-box; margin: 7.5px 16px; overflow-wrap: break-word; line-height: 1.8;"><a href="https://www.waveshare.com/wiki/File:HMMD_mmWave_Sensor02.jpg" class="image fancybox" style="box-sizing: border-box; background-color: transparent; color: #337ab7; text-decoration-line: none; line-height: 1.6;" target="_blank"><img alt="HMMD mmWave Sensor02.jpg" src="https://www.waveshare.com/w/upload/5/5b/HMMD_mmWave_Sensor02.jpg" decoding="async" loading="lazy" width="600" style="box-sizing: border-box; border: none; vertical-align: middle; max-width: 100%; height: auto;" /></a></p>
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                     <th style="box-sizing: border-box; padding: 8px; text-align: left; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">J2 Pin</th>
                     <th style="box-sizing: border-box; padding: 8px; text-align: left; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">Label</th>
                     <th style="box-sizing: border-box; padding: 8px; text-align: left; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">Function</th>
                     <th style="box-sizing: border-box; padding: 8px; text-align: left; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">Description</th>
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                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">J2Pin1</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">3V3</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">Power Input</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">Power supply positive, 3.0~3.6V，Typ.3.3V</td>
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                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">J2Pin2</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">GND</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">Ground</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">Connect to the Ground</td>
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                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">J2Pin3</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">TX</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">UART_TX</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">0~3.3V</td>
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                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">J2Pin4</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">RX</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">UART_RX</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">0~3.3V</td>
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                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">J2Pin5</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">OT2</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">IO, Used for reporting detection status: High output level for presence, low output level for absence.</td>
                     <td style="box-sizing: border-box; padding: 8px; line-height: 1.42857; vertical-align: top; border-style: solid; border-color: #dddddd;">0~3.3V<br /><br /></td>
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