{"title":"Teensy Accessories","description":"\u003cp\u003eTeensy accessories are the companion hardware items that extend and complete a Teensy-based project. From pin headers and USB cables to audio accessory boards and enclosures, these add-ons help bridge the gap between the bare development board and a finished build.\u003c\/p\u003e\u003cp\u003eThe range includes pin headers and breakout accessories compatible with Teensy 4.0, 4.1, and related boards, as well as USB cables and other supporting hardware.\u003c\/p\u003e\u003cp\u003eThese accessories are useful for makers integrating Teensy into custom enclosures, audio hardware builders requiring clean USB connections, and developers setting up a reliable programming and debugging environment for production-quality Teensy projects.\u003c\/p\u003e","products":[{"product_id":"ethernet-kit-for-teensy-4-1","title":"Ethernet Kit for Teensy 4.1","description":"\u003ch2\u003eDESCRIPTION\u003c\/h2\u003e\n\u003cp\u003eThis kit has all the parts needed to connect to the Ethernet port on Teensy 4.1.\u003c\/p\u003e\n\u003cp\u003eThis kit includes an Ethernet MagJack, bare circuit board, ribbon cable assembly, 2 header pins, and a capacitor. DIY soldering is required.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eASSEMBLY\u003c\/h2\u003e\n\u003cp\u003eThe first step is to solder the capacitor.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/ethernet_kit_02.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eNext solder the header pins. After soldering 1 pin, turn the board over to check if the pins are at a right angle to the board. Once 2 or more pins are soldered, fixing crooked pins is almost impossible.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/ethernet_kit_03.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eLast, solder the Magjack.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/ethernet_kit_04.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eYou will also need to solder the remaining header pins to your Teensy 4.1.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/ethernet_kit_05.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eAfter soldering, plug the 2 boards together with the cable assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/ethernet_kit_06.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eSOFTWARE SUPPORT\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/vjmuzik\/NativeEthernet\" target=\"_blank\"\u003eNativeEthernet library\u003c\/a\u003e is included in Teensyduino 1.53. In Arduino, click \u003cstrong\u003eFile \u0026gt; Examples \u0026gt; NativeEthernet\u003c\/strong\u003e to get started.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/forum.pjrc.com\/threads\/68066\" target=\"_blank\"\u003eQNEthernet\u003c\/a\u003e is an improved lwIP-based library by Shawn Silverman, which can be installed with the Arduino Library Manager. In Arduino, click \u003cstrong\u003eTools \u0026gt; Manage Libraries\u003c\/strong\u003e and search for \"QNEthernet\".\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eTECHNICAL DETAILS\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/schematic_ethernet.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.pjrc.com\/store\/LPJ4012AHNL.pdf\" target=\"_blank\"\u003eLink-PP LPJ4012AHNL Datasheet\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/www.pjrc.com\/store\/j1b1211ccd.pdf\" target=\"_blank\"\u003eCetus J1B121 J1B12111CCD Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eSHIPPING LIST\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Ethernet Kit for Teensy 4.1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sparkfun","offers":[{"title":"Default Title","offer_id":44748758286649,"sku":"DEV-18615","price":19.6,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/5369\/6313\/products\/ethernet-kit-for-teensy-4.1_05b74b01-a614-448a-bf76-949780e8f39b.jpg?v=1683952611"},{"product_id":"audio-adapter-board-for-teensy-4-0","title":"Audio Adapter Board for Teensy 4.0 4.1","description":"\u003ch2\u003eDESCRIPTION\u003c\/h2\u003e\n\u003cp\u003eThis audio adaptor lets you easily add high quality 16 bit, 44.1 kHz sample rate (CD quality) audio to your projects with Teensy 3.0, 3.1, 3.2, 3.5, 3.6 (Rev C), or 4.0, 4.1 (Rev D, D2). The older versions can be used with Teensy 4.0 by wires or an adaptor PCB.\u003c\/p\u003e\n\u003cp\u003eAll versions of the audio shield support stereo headphone and stereo line-level output, and also stereo line-level input or mono microphone input.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"http:\/\/www.pjrc.com\/teensy\/td_libs_Audio.html\" target=\"_blank\" data-mce-href=\"http:\/\/www.pjrc.com\/teensy\/td_libs_Audio.html\"\u003eTeensy Audio Library\u003c\/a\u003e lets you use the input and output simultaneously together with a toolkit of audio processing objects, to easily create all types of sophisticated audio applications. You can play multiple sound files, create synthesized waveforms, apply effects, mix multiple streams and output high quality audio to the headphones or line out pins.\u003c\/p\u003e\n\u003cp\u003eTeensy 3.x have the Cortex-M4 DSP instructions which provide plenty of computational power for real-time FFT (spectrum analysis), opening up the possibility of creating advanced sound-reactive projects. Teensy 4.x with Cortex-M7 provides even more DSP capability, allowing sophisticated synthesis applications to create many simultaneous \"voices\" or effects.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/teensy3_audio.jpg\" data-mce-src=\"https:\/\/www.pjrc.com\/store\/teensy3_audio.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eTwo of these 14x1 pins can be used to easily soolder the Teensy 3.x and audio board together.\u003c\/p\u003e\n\u003cp\u003eA 14 pin socket and 14 pin header can be used to make them plug together.\u003c\/p\u003e\n\u003cp\u003eAn optional Thumbwheel Potentiometer can be added for volume or control an audio parameter.\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eTeensy 4.x Pins\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eRev D, D2 \u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eTeensy 3.x Pins\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eRev C \u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eShareable\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Data\u003c\/td\u003e\n\u003ctd\u003e7, 8, 20, 21, 23\u003c\/td\u003e\n\u003ctd\u003e9, 11, 13, 22, 23\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Control\u003c\/td\u003e\n\u003ctd\u003e18, 19\u003c\/td\u003e\n\u003ctd\u003e18, 19\u003c\/td\u003e\n\u003ctd\u003eSDA, SCL (other I2C chips)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume Pot\u003c\/td\u003e\n\u003ctd\u003e15 (A1)\u003c\/td\u003e\n\u003ctd\u003e15 (A1)\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSD Card\u003c\/td\u003e\n\u003ctd\u003e10, 11, 12, 13\u003c\/td\u003e\n\u003ctd\u003e7, 10, 12, 14\u003c\/td\u003e\n\u003ctd\u003eMOSI, MISO, SCK (other SPI chips)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Chip\u003c\/td\u003e\n\u003ctd\u003e6, 11, 12, 13\u003c\/td\u003e\n\u003ctd\u003e6, 7, 12, 14\u003c\/td\u003e\n\u003ctd\u003eMOSI, MISO, SCK (other SPI chips)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Side\u003cbr\u003eRev D2 (for Teensy 4.x)\u003c\/td\u003e\n\u003ctd\u003eFront Side\u003cbr\u003eRev D (for Teensy 4.x)\u003c\/td\u003e\n\u003ctd\u003eFront Side\u003cbr\u003eRev C (for Teensy 3.x)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/teensy4b_audio_front.jpg\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/teensy4_audio_front.jpg\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/teensy3_audio_front.jpg\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Side\u003cbr\u003eRev D2 (for Teensy 4.x)\u003c\/td\u003e\n\u003ctd\u003eBack Side\u003cbr\u003eRev D (for Teensy 4.x)\u003c\/td\u003e\n\u003ctd\u003eBack Side\u003cbr\u003eRev C (for Teensy 3.x)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/teensy4b_audio_back.jpg\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/teensy4_audio_back.jpg\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/teensy3_audio_back.jpg\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/forum.pjrc.com\/threads\/35021-Audio-board-mechanical-drawing\" target=\"_blank\" data-mce-href=\"https:\/\/forum.pjrc.com\/threads\/35021-Audio-board-mechanical-drawing\"\u003eMechanical drawing and Eagle library\u003c\/a\u003e\u003cbr\u003e\u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/forum.pjrc.com\/threads\/35056-ap7313-voltage-regulator-on-audio-board?p=107595\u0026amp;viewfull=1#post107595\" target=\"_blank\" data-mce-href=\"https:\/\/forum.pjrc.com\/threads\/35056-ap7313-voltage-regulator-on-audio-board?p=107595\u0026amp;viewfull=1#post107595\"\u003eEstimated power consumption\u003c\/a\u003e\u003cbr\u003e\u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/forum.pjrc.com\/threads\/60614-3d-CAD-Model-for-Audio-Board-Shield\" target=\"_blank\" data-mce-href=\"https:\/\/forum.pjrc.com\/threads\/60614-3d-CAD-Model-for-Audio-Board-Shield\"\u003e3D CAD models\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eSignals to Teensy\u003c\/h3\u003e\n\u003cp\u003eThe audio chip, part number \u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/www.pjrc.com\/teensy\/SGTL5000.pdf\" target=\"_blank\" data-mce-href=\"https:\/\/www.pjrc.com\/teensy\/SGTL5000.pdf\"\u003eSGTL5000\u003c\/a\u003e, connects to Teensy using 7 signals. The I2C pins SDA and SCL are used to control the chip and adjust parameters. Audio data uses \u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/en.wikipedia.org\/wiki\/I%C2%B2S\" target=\"_blank\" data-mce-href=\"https:\/\/en.wikipedia.org\/wiki\/I%C2%B2S\"\u003eI2S signals\u003c\/a\u003e, DIN (which the audio shield uses to make analog signals at the headphones and line out) and DOUT (which the audio shield creates from reading the analog signals at line in or microphone), and 3 clocks, LRCLK (44.1 kHz), BCLK (1.41 or 2.82 MHz) and MCLK (11.29 MHz). All 3 clocks are created by Teensy. Most I2S software on Teensy uses 64 bits per LRCLK (BCLK=2.82 MHz), where the upper 16 bit of each 32 bit word are used and the lower 16 bits are ignored. However, some I2S support uses only 32 bits per LRCLK (BCLK=1.41 MHz). Refer to the \u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/www.pjrc.com\/teensy\/gui\/\" target=\"_blank\" data-mce-href=\"https:\/\/www.pjrc.com\/teensy\/gui\/\"\u003eDesign Tool\u003c\/a\u003e documentation for each I2S input or output for details. The SGTL5000 listens for clocks. All its clock pins are inputs.\u003c\/p\u003e\n\u003cp\u003e5 additional signals can optionally connect memory to store sounds and 1 optional analog signal can connect a thumbwheel pot to allow software which reads the signal with analogRead() and use the readings to control any audio parameter, such as volume. While labeled \"Vol\" and most commonly used to control volume, the actual purpose of this analog pin is controlled by software written to Teensy.\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRev D, D2 (Teensy 4.0)\u003c\/td\u003e\n\u003ctd\u003eRev C (Teensy 3.x)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/teensy4_audio_pins.jpg\" data-mce-src=\"https:\/\/www.pjrc.com\/store\/teensy4_audio_pins.jpg\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/teensy3_audio_pins.jpg\" data-mce-src=\"https:\/\/www.pjrc.com\/store\/teensy3_audio_pins.jpg\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eAudio Shield\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eSignal \u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eRev D, D2\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e(Teensy 4.x) \u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eRev C\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e(Teensy 3.x) \u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eRequired For \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMCLK\u003c\/td\u003e\n\u003ctd\u003e23\u003cbr\u003e(MCLK1)\u003c\/td\u003e\n\u003ctd\u003e11\u003cbr\u003e(MCLK)\u003c\/td\u003e\n\u003ctd\u003eAudio\u003c\/td\u003e\n\u003ctd\u003eAudio Master Clock, 11.29 MHz\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBCLK\u003c\/td\u003e\n\u003ctd\u003e21\u003cbr\u003e(BCLK1)\u003c\/td\u003e\n\u003ctd\u003e9\u003cbr\u003e(BCLK)\u003c\/td\u003e\n\u003ctd\u003eAudio\u003c\/td\u003e\n\u003ctd\u003eAudio Bit Clock, 1.41 or 2.82 MHz\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLRCLK\u003c\/td\u003e\n\u003ctd\u003e20\u003cbr\u003e(LRCLK1)\u003c\/td\u003e\n\u003ctd\u003e23\u003cbr\u003e(LRCLK)\u003c\/td\u003e\n\u003ctd\u003eAudio\u003c\/td\u003e\n\u003ctd\u003eAudio Left\/Right Clock, 44.1 kHz\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDIN\u003c\/td\u003e\n\u003ctd\u003e7\u003cbr\u003e(OUT1A)\u003c\/td\u003e\n\u003ctd\u003e22\u003cbr\u003e(OUT)\u003c\/td\u003e\n\u003ctd\u003eAudio Output\u003c\/td\u003e\n\u003ctd\u003eAudio Data from Teensy to Audio Shield\u003cbr\u003eGoes to both headphone jack and Line-Out pins\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDOUT\u003c\/td\u003e\n\u003ctd\u003e8\u003cbr\u003e(IN1)\u003c\/td\u003e\n\u003ctd\u003e13\u003cbr\u003e(IN)\u003c\/td\u003e\n\u003ctd\u003eAudio Input\u003c\/td\u003e\n\u003ctd\u003eAudio Data from Audio Shield to Teensy\u003cbr\u003eComes from either Microphone or Line-In pins\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSCL\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003eAudio Config\u003c\/td\u003e\n\u003ctd\u003eControl Clock (I2C)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSDA\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003eAudio Config\u003c\/td\u003e\n\u003ctd\u003eControl Data (I2C)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSCK\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003eOptional Data\u003cbr\u003eSD or MEM\u003c\/td\u003e\n\u003ctd\u003eData Storage (SPI) Clock\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMISO\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003eOptional Data\u003cbr\u003eSD or MEM\u003c\/td\u003e\n\u003ctd\u003eData Storage (SPI) from SD\/MEM to Teensy\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOSI\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003eOptional Data\u003cbr\u003eSD or MEM\u003c\/td\u003e\n\u003ctd\u003eData Storage (SPI) from Teensy to SD\/MEM\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSDCS\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003eOptional Data\u003cbr\u003eSD Card\u003c\/td\u003e\n\u003ctd\u003eChip Select (SPI) for SD Card\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMEMCS\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eOptional Data\u003cbr\u003eMEM Chip\u003c\/td\u003e\n\u003ctd\u003eChip Select (SPI) for Memory Chip\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVol\u003c\/td\u003e\n\u003ctd\u003e15 \/ A1\u003c\/td\u003e\n\u003ctd\u003e15 \/ A1\u003c\/td\u003e\n\u003ctd\u003eOptional Knob\u003c\/td\u003e\n\u003ctd\u003eVolume Thumbwheel (analog signal)\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe SD socket is accessed with 4 SPI pins. For Rev C used with Teensy 3.2, 3.5, 3.6, SCLK and MOSI are used at alternate locations. See the audio library examples for details on how to select these different pins. The SD card is useful for playing music. Sandisk and other good quality SD cards are capable of playing 2 WAV files simultaneously.\u003c\/p\u003e\n\u003cp\u003eWires for MCLK, BCLK, LRCLK, TX \u0026amp; RX should be kept short. The audio shield is meant to connect to Teensy through short pins. Wires can be used, but \u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/forum.pjrc.com\/threads\/41157-Just-noise-with-Teensy-3-6-and-Audio-Adaptor-Board\" target=\"_blank\" data-mce-href=\"https:\/\/forum.pjrc.com\/threads\/41157-Just-noise-with-Teensy-3-6-and-Audio-Adaptor-Board\"\u003ewires must be short to avoid problems\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThe line in\/out header uses a pinout compatible with the AC97 audio header on PC motherboards. The front panel cables from most PCs can be connected, or wires can be soldered directly to the pins.\u003c\/p\u003e\n\u003ch3\u003eSchematic, Rev D2\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/schematic_audio4b.png\" data-mce-src=\"https:\/\/www.pjrc.com\/store\/schematic_audio4b.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eIn January 2023, Rev D2 was created due to shortages on the 32 pin version of SGTL5000 and the \u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/forum.pjrc.com\/threads\/71669\" target=\"_blank\" data-mce-href=\"https:\/\/forum.pjrc.com\/threads\/71669\"\u003eoriginal SD socket\u003c\/a\u003e. Rev D2 is functionally the same as Rev D, except the the I2C address selection pads. The I2C address is not configurable on the 20 pin SGTL5000 chip.\u003c\/p\u003e\n\u003ch3\u003eSchematic, Rev D\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/schematic_audio4.png\" data-mce-src=\"https:\/\/www.pjrc.com\/store\/schematic_audio4.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eIn September 2019, Rev D was created for Teensy 4.0. The circuitry is the same as Rev C, but the I2S digital audio signals and SPI signals for the SD card are routed to the pins Teensy 4.0 uses.\u003c\/p\u003e\n\u003cp\u003eForum user bmo created a \u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/forum.pjrc.com\/threads\/65435\" target=\"_blank\" data-mce-href=\"https:\/\/forum.pjrc.com\/threads\/65435\"\u003eKicad Symbol and Footprint for the Rev D Audio Shield\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eSchematic, Rev C\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/schematic_audio3.png\" data-mce-src=\"https:\/\/www.pjrc.com\/store\/schematic_audio3.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eIn early 2019, a 100 ohm resistor was added to the MCLK signal.\u003c\/p\u003e\n\u003ch3\u003eSchematic, Rev B\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/schematic_audio2.gif\" data-mce-src=\"https:\/\/www.pjrc.com\/store\/schematic_audio2.gif\"\u003e\u003c\/p\u003e\n\u003cp\u003eIn January 2015, small improvements were added. The 1.0 µF capacitors were increased to 2.2 µF, to improve performance for sub-audible and extremely deep base sounds. 10K pullup resistors were added to pins 6 and 10.\u003c\/p\u003e\n\u003cp\u003eSolder pads were added to the I2S transmit and receive lines, and the I2C address configuration pin. Teensy 3.1 \u0026amp; 3.2 are \u003ca title=\"Audio Adapter Board for Teensy 4.0\" href=\"https:\/\/forum.pjrc.com\/threads\/29373-Bit-bang-multiple-I2S-inputs-simultaneously?p=79606#post79606\" data-mce-href=\"https:\/\/forum.pjrc.com\/threads\/29373-Bit-bang-multiple-I2S-inputs-simultaneously?p=79606#post79606\" target=\"_blank\"\u003ecapable of quad channel I2S audio\u003c\/a\u003e. These pads are intended to allow a second audio board to be used, for 4 channel audio input and output! (TODO: 4 channel support has not yet been tested with Teensy 3.5 or 3.6)\u003c\/p\u003e\n\u003cp\u003eUpdate: the Teensy Audio Library now supports quad channel output. For details, see \u003cstrong\u003eFile \u0026gt; Examples \u0026gt; Audio \u0026gt; HardwareTesting \u0026gt; SGTL5000 \u0026gt; QuadChannelOutput\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eSchematic, Rev A\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.pjrc.com\/store\/schematic_audio.gif\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eSHIPPING LIST\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Audio Adapter Board for Teensy 4.0 4.1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sparkfun","offers":[{"title":"Default Title","offer_id":46017274872121,"sku":"TEENSY4_AUDIO","price":30.8,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/5369\/6313\/files\/AudioAdapterBoardforTeensy4.0.jpg?v=1690865072"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/5369\/6313\/collections\/AudioAdapterBoardforTeensy4.0.jpg?v=1781697501","url":"https:\/\/kuriosity.sg\/collections\/teensy-accessories.oembed","provider":"Kuriosity","version":"1.0","type":"link"}