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<title>MDB HAT at Raspberry Pi GPIO Pinout</title>
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<meta name="description" content="MDB (Machine Data Bus) Bus Interface" />
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<body class="board">
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<div id="container">
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<h1 class="logo"><a title="Raspberry Pi GPIO Pinout home" href="/"><img src="/resources/pinout-logo.png" width="45" height="45" />Raspberry Pi Pinout</a></h1>
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<div id="leftcolumn">
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<nav id="gpio">
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<div id="pinbase"></div>
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<ul class="bottom">
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<li class="pin1 pow3v3 overlay-power"><a href="/pinout/3v3_power" title=""><span class="default"><span class="phys">1</span> 3v3 Power</span><span class="pin"></span></a></li>
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<li class="pin3 gpio i2c"><a href="/pinout/pin3_gpio2" title="Wiring Pi pin 8"><span class="default"><span class="phys">3</span> <span class="name">GPIO 2</span> <small>(I2C1 SDA)</small></span><span class="pin"></span></a></li>
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<li class="pin5 gpio i2c"><a href="/pinout/pin5_gpio3" title="Wiring Pi pin 9"><span class="default"><span class="phys">5</span> <span class="name">GPIO 3</span> <small>(I2C1 SCL)</small></span><span class="pin"></span></a></li>
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<li class="pin7 gpio"><a href="/pinout/pin7_gpio4" title="Wiring Pi pin 7"><span class="default"><span class="phys">7</span> <span class="name">GPIO 4</span> <small>(GPCLK0)</small></span><span class="pin"></span></a></li>
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<li class="pin9 gnd overlay-ground"><a href="/pinout/ground" title=""><span class="default"><span class="phys">9</span> Ground</span><span class="pin"></span></a></li>
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<li class="pin11 gpio"><a href="/pinout/pin11_gpio17" title="Wiring Pi pin 0"><span class="default"><span class="phys">11</span> <span class="name">GPIO 17</span></span><span class="pin"></span></a></li>
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<li class="pin13 gpio"><a href="/pinout/pin13_gpio27" title="Wiring Pi pin 2"><span class="default"><span class="phys">13</span> <span class="name">GPIO 27</span></span><span class="pin"></span></a></li>
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<li class="pin15 gpio"><a href="/pinout/pin15_gpio22" title="Wiring Pi pin 3"><span class="default"><span class="phys">15</span> <span class="name">GPIO 22</span></span><span class="pin"></span></a></li>
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<li class="pin17 pow3v3 overlay-power"><a href="/pinout/3v3_power" title=""><span class="default"><span class="phys">17</span> 3v3 Power</span><span class="pin"></span></a></li>
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<li class="pin19 gpio spi overlay-pin"><a href="/pinout/pin19_gpio10" title="MDB Controller - MOSI, Wiring Pi pin 12"><span class="default"><span class="phys">19</span> <span class="name">GPIO 10</span> <small>(SPI_MOSI)</small></span><span class="pin"></span></a></li>
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<li class="pin21 gpio spi overlay-pin"><a href="/pinout/pin21_gpio9" title="MDB Controller – MISO, Wiring Pi pin 13"><span class="default"><span class="phys">21</span> <span class="name">GPIO 9</span> <small>(SPI_MISO)</small></span><span class="pin"></span></a></li>
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<li class="pin23 gpio spi overlay-pin"><a href="/pinout/pin23_gpio11" title="MDB Controller - SCLK, Wiring Pi pin 14"><span class="default"><span class="phys">23</span> <span class="name">GPIO 11</span> <small>(SPI_SCLK)</small></span><span class="pin"></span></a></li>
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<li class="pin25 gnd overlay-ground"><a href="/pinout/ground" title=""><span class="default"><span class="phys">25</span> Ground</span><span class="pin"></span></a></li>
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<li class="pin27 gpio i2c overlay-pin"><a href="/pinout/pin27_gpio0" title="ID EEPROM DTA, Wiring Pi pin 30"><span class="default"><span class="phys">27</span> <span class="name">GPIO 0</span> <small>(ID_SD)</small></span><span class="pin"></span></a></li>
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<li class="pin29 gpio overlay-pin"><a href="/pinout/pin29_gpio5" title="IO MDB>RPi, Wiring Pi pin 21"><span class="default"><span class="phys">29</span> <span class="name">GPIO 5</span> <small>(IO2RPI)</small></span><span class="pin"></span></a></li>
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<li class="pin31 gpio overlay-pin"><a href="/pinout/pin31_gpio6" title="MDB Contoller Reset, Wiring Pi pin 22"><span class="default"><span class="phys">31</span> <span class="name">GPIO 6</span> <small>(MDB_RES)</small></span><span class="pin"></span></a></li>
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<li class="pin33 gpio overlay-pin"><a href="/pinout/pin33_gpio13" title="IO RPi>MDB, Wiring Pi pin 23"><span class="default"><span class="phys">33</span> <span class="name">GPIO 13</span> <small>(IOfromRPi)</small></span><span class="pin"></span></a></li>
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<li class="pin35 gpio pcm"><a href="/pinout/pin35_gpio19" title="Wiring Pi pin 24"><span class="default"><span class="phys">35</span> <span class="name">GPIO 19</span> <small>(PCM FS)</small></span><span class="pin"></span></a></li>
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<li class="pin37 gpio"><a href="/pinout/pin37_gpio26" title="Wiring Pi pin 25"><span class="default"><span class="phys">37</span> <span class="name">GPIO 26</span></span><span class="pin"></span></a></li>
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<li class="pin39 gnd overlay-ground"><a href="/pinout/ground" title=""><span class="default"><span class="phys">39</span> Ground</span><span class="pin"></span></a></li>
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</ul>
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<ul class="top">
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<li class="pin2 pow5v overlay-power"><a href="/pinout/5v_power" title=""><span class="default"><span class="phys">2</span> 5v Power</span><span class="pin"></span></a></li>
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<li class="pin4 pow5v overlay-power"><a href="/pinout/5v_power" title=""><span class="default"><span class="phys">4</span> 5v Power</span><span class="pin"></span></a></li>
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<li class="pin6 gnd overlay-ground"><a href="/pinout/ground" title=""><span class="default"><span class="phys">6</span> Ground</span><span class="pin"></span></a></li>
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<li class="pin8 gpio uart overlay-pin"><a href="/pinout/pin8_gpio14" title="Serial TX > MDB Controller, Wiring Pi pin 15"><span class="default"><span class="phys">8</span> <span class="name">GPIO 14</span> <small>(TxD)</small></span><span class="pin"></span></a></li>
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<li class="pin10 gpio uart overlay-pin"><a href="/pinout/pin10_gpio15" title="Serial RX < MDB Controller, Wiring Pi pin 16"><span class="default"><span class="phys">10</span> <span class="name">GPIO 15</span> <small>(RxD)</small></span><span class="pin"></span></a></li>
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<li class="pin12 gpio pcm"><a href="/pinout/pin12_gpio18" title="Wiring Pi pin 1"><span class="default"><span class="phys">12</span> <span class="name">GPIO 18</span> <small>(PCM CLK)</small></span><span class="pin"></span></a></li>
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<li class="pin14 gnd overlay-ground"><a href="/pinout/ground" title=""><span class="default"><span class="phys">14</span> Ground</span><span class="pin"></span></a></li>
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<li class="pin16 gpio"><a href="/pinout/pin16_gpio23" title="Wiring Pi pin 4"><span class="default"><span class="phys">16</span> <span class="name">GPIO 23</span></span><span class="pin"></span></a></li>
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<li class="pin18 gpio"><a href="/pinout/pin18_gpio24" title="Wiring Pi pin 5"><span class="default"><span class="phys">18</span> <span class="name">GPIO 24</span></span><span class="pin"></span></a></li>
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<li class="pin20 gnd overlay-ground"><a href="/pinout/ground" title=""><span class="default"><span class="phys">20</span> Ground</span><span class="pin"></span></a></li>
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<li class="pin22 gpio"><a href="/pinout/pin22_gpio25" title="Wiring Pi pin 6"><span class="default"><span class="phys">22</span> <span class="name">GPIO 25</span></span><span class="pin"></span></a></li>
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<li class="pin24 gpio spi overlay-pin"><a href="/pinout/pin24_gpio8" title="MDB Controller – CS, Wiring Pi pin 10"><span class="default"><span class="phys">24</span> <span class="name">GPIO 8</span> <small>(SPI_CE0)</small></span><span class="pin"></span></a></li>
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<li class="pin26 gpio spi"><a href="/pinout/pin26_gpio7" title="Wiring Pi pin 11"><span class="default"><span class="phys">26</span> <span class="name">GPIO 7</span> <small>(SPI0 CE1)</small></span><span class="pin"></span></a></li>
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<li class="pin28 gpio i2c overlay-pin"><a href="/pinout/pin28_gpio1" title="ID EEPROM CLK, Wiring Pi pin 31"><span class="default"><span class="phys">28</span> <span class="name">GPIO 1</span> <small>(ID_SC)</small></span><span class="pin"></span></a></li>
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<li class="pin30 gnd overlay-ground"><a href="/pinout/ground" title=""><span class="default"><span class="phys">30</span> Ground</span><span class="pin"></span></a></li>
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<li class="pin32 gpio"><a href="/pinout/pin32_gpio12" title="Wiring Pi pin 26"><span class="default"><span class="phys">32</span> <span class="name">GPIO 12</span> <small>(PWM0)</small></span><span class="pin"></span></a></li>
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<li class="pin34 gnd overlay-ground"><a href="/pinout/ground" title=""><span class="default"><span class="phys">34</span> Ground</span><span class="pin"></span></a></li>
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<li class="pin36 gpio"><a href="/pinout/pin36_gpio16" title="Wiring Pi pin 27"><span class="default"><span class="phys">36</span> <span class="name">GPIO 16</span></span><span class="pin"></span></a></li>
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<li class="pin38 gpio pcm"><a href="/pinout/pin38_gpio20" title="Wiring Pi pin 28"><span class="default"><span class="phys">38</span> <span class="name">GPIO 20</span> <small>(PCM DIN)</small></span><span class="pin"></span></a></li>
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<li class="pin40 gpio pcm"><a href="/pinout/pin40_gpio21" title="Wiring Pi pin 29"><span class="default"><span class="phys">40</span> <span class="name">GPIO 21</span> <small>(PCM DOUT)</small></span><span class="pin"></span></a></li>
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</ul>
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</nav>
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<div id="legend">
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<div>
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<h2>Legend</h2>
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<p>Orientate your Pi with the GPIO on the right and the HDMI port(s) on the left.</p>
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<ul>
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<li class="gpio">
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<a href="/pinout/wiringpi" title="GPIO (General Purpose IO)">
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<span class="default"></span>
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<span class="pin"></span> GPIO <small>(General Purpose IO)</small>
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</a>
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</li>
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<li class="spi">
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<a href="/pinout/spi" title="SPI (Serial Peripheral Interface)">
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<span class="default"></span>
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<span class="pin"></span> SPI <small>(Serial Peripheral Interface)</small>
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</a>
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</li>
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<li class="i2c">
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<a href="/pinout/i2c" title="I2C (Inter-integrated Circuit)">
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<span class="default"></span>
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<span class="pin"></span> I<sup>2</sup>C <small>(Inter-integrated Circuit)</small>
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</a>
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</li>
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<li class="uart">
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<a href="/pinout/uart" title="UART (Universal Asynchronous Receiver/Transmitter)">
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<span class="default"></span>
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<span class="pin"></span> UART <small>(Universal Asynchronous Receiver/Transmitter)</small>
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</a>
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</li>
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<li class="pcm">
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<a href="/pinout/pcm" title="PCM (Pulse Code Modulation)">
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<span class="default"></span>
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<span class="pin"></span> PCM <small>(Pulse Code Modulation)</small>
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</a>
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</li>
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<li class="gnd">
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<a href="/pinout/ground" title="Ground">
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<span class="default"></span>
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<span class="pin"></span> Ground
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</a>
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</li>
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<li class="pow5v">
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<a href="/pinout/5v_power" title="5v (Power)">
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<span class="default"></span>
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<span class="pin"></span> 5v <small>(Power)</small>
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</a>
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</li>
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<li class="pow3v3">
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<a href="/pinout/3v3_power" title="3.3v (Power)">
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<span class="default"></span>
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<span class="pin"></span> 3.3v <small>(Power)</small>
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</a>
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</li>
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</ul>
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</div>
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<img src="/resources/pi-orientation.png" width="196" height="297" />
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</div>
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</div>
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<div id="content">
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<div id="interfaces">
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<ul>
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<li><a href="/pinout/gpclk">GPCLK</a></li><li><a href="/pinout/1_wire">1-WIRE</a></li><li><a href="/pinout/3v3_power">3v3 Power</a></li><li><a href="/pinout/pcm">PCM</a></li><li><a href="/pinout/ground">Ground</a></li><li><a href="/pinout/spi">SPI</a></li><li><a href="/pinout/wiringpi">WiringPi</a></li><li><a href="/pinout/jtag">JTAG</a></li><li><a href="/pinout/5v_power">5v Power</a></li><li><a href="/pinout/sdio">SDIO</a></li><li><a href="/pinout/uart">UART</a></li><li><a href="/pinout/pwm">PWM</a></li><li><a href="/pinout/i2c">I2C</a></li><li><a href="/pinout/dpi">DPI</a></li>
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</ul>
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</div>
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<div id="crumbtrail"><p><a href="/">Home</a> » <a href="/boards">Boards</a> » <a href="/boards#manufacturer=Other">Other</a></p></div>
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<div id="featured">
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<ul>
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</ul>
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</div>
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<article class="page_mdb_hat"><h1>MDB HAT</h1>
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<p>The MDBHAT from <a href="https://qibixx.com">Qibixx</a> is a Raspberry Pi HAT connecting the Pi with the MDB (Machine Data Bus), found in vending machines and peripherals such as Coin and Bill Acceptors. With its advanced architecture, the MDB Hat can support MDB Master, MDB Peripheral and MDB Sniffing applications without any jumper settings.</p>
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<p>The firmware of the MDBHAT can be updated from the Pi.</p>
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<p>For universal connectivity, the MDB HAT connects with the PI with either serial or SPI interface.
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The MDB HAT is powered from the Pi, however, it can also provide up to 15W (5V, 3A) and backpower the Pi if MDB power is available. In most applications, the MDB HAT plus Pi and even other peripherals can be used without an additional power supply.</p>
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<p>Full device documentation and protocol information is available <a href="https://docs.qibixx.com">here</a>.</p>
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<p>General MDB information and a device family overview can be found <a href="https://mdb.technology">here</a>.</p>
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<table class="details"><tr><td><h2>Details</h2><ul>
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<li>Made by Qibixx</li>
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<li>HAT form-factor</li>
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<li>EEPROM product ID</li>
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<li>Needs 5v and 3v3 power</li>
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<li>Uses 11 GPIO pins</li>
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<li>Communication over SPI</li>
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<li><a href="https://qibixx.com">More Information</a></li>
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<li><a href="https://qiba.pt/">Buy Now</a></li>
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</ul></td><td><img loading="lazy" src="/resources/boards/mdb-pi-hat.png" alt="MDB HAT" /></td></tr></table></article>
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<div id="lang">
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</div>
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</div>
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<div class="footer">
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<p>Spotted an error, want to add your board's pinout? <a href="https://github.com/pinout-xyz/Pinout.xyz">Contribute to Pinout.xyz at GitHub</a></p>
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<p>Part of <a href="https://www.gadgetoid.com">gadgetoid.com</a>. Maintained by <a href="https://fosstodon.org/@gadgetoid">@Gadgetoid@fosstodon.org</a>.</p>
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<p>Help make Pinout.xyz better- please sponsor me at <a href="https://ko-fi.com/gadgetoid">Ko-Fi</a>, <a href="https://github.com/sponsors/Gadgetoid">GitHub</a> or <a href="https://www.patreon.com/gadgetoid">Patreon</a></p>
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