{"product_id":"portable-bluetooth-chord-controller-iphone-garageband","title":"Portable Bluetooth Chord Controller for iPhone \u0026 GarageBand","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003cp\u003e\u003cstrong\u003eTurn your iPhone into a compact music-making setup.\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003cp\u003e\n    This handheld Bluetooth chord controller gives creators a convenient set of\n    physical keys for playing common chords, individual notes, and rhythmic\n    patterns in GarageBand. Its compact body is 3D printed and manually\n    assembled, making it suitable for casual practice, mobile music creation,\n    demonstrations, and experimental electronic-instrument projects.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"padding:16px; margin:20px 0; border:1px solid #222; background:#f7f7f7;\"\u003e\n    \u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eCompatibility Notice\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cul style=\"margin:0; padding-left:20px;\"\u003e\n      \u003cli\u003eCurrently designed for use with an iPhone and GarageBand.\u003c\/li\u003e\n      \u003cli\u003eThis controller does not produce sound by itself.\u003c\/li\u003e\n      \u003cli\u003eAndroid devices are not currently supported.\u003c\/li\u003e\n      \u003cli\u003eSome Lightning-port iPhones may require the controller to be powered by an external USB power bank while connecting through Bluetooth.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003ePhysical Controls for Mobile Music Creation\u003c\/h2\u003e\n  \u003cp\u003e\n    Instead of relying entirely on a touchscreen, you can use responsive\n    mechanical keys to trigger chord and note functions. The controller\n    includes two groups of commonly used chords, a single-note mode, transpose\n    controls, and rhythm adjustment.\n  \u003c\/p\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommon chord controls:\u003c\/strong\u003e Two selectable groups covering eight commonly used chord positions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSingle-note mode:\u003c\/strong\u003e Switch from chord playing to individual-note control.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTranspose adjustment:\u003c\/strong\u003e Move the playing range up or down using dedicated controls.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRhythm adjustment:\u003c\/strong\u003e Change supported rhythm settings directly from the controller.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMechanical key switches:\u003c\/strong\u003e Transparent keycaps provide clear tactile feedback.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompact handheld format:\u003c\/strong\u003e Designed for portable practice and desktop music setups.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eESP32-based electronics:\u003c\/strong\u003e Built around a programmable ESP32 control board.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUpgradeable firmware:\u003c\/strong\u003e Future functions may be added through firmware updates where supported.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eHow It Works\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003ePower on the controller using the supported USB power connection.\u003c\/li\u003e\n    \u003cli\u003eOpen GarageBand on your iPhone.\u003c\/li\u003e\n    \u003cli\u003eConnect the controller through the supported Bluetooth connection.\u003c\/li\u003e\n    \u003cli\u003eSelect the desired chord, note, transpose, or rhythm mode and begin playing.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eDesigned For\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eGarageBand users\u003c\/li\u003e\n    \u003cli\u003eBeginner music practice\u003c\/li\u003e\n    \u003cli\u003eMobile music creators\u003c\/li\u003e\n    \u003cli\u003eElectronic-instrument enthusiasts\u003c\/li\u003e\n    \u003cli\u003eCosplay, video, and performance props requiring interactive controls\u003c\/li\u003e\n    \u003cli\u003eMaker and ESP32 projects\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eHandmade Product Notice\u003c\/h2\u003e\n  \u003cp\u003e\n    This is an early-stage, manually assembled product with a 3D-printed\n    enclosure. Small layer lines, surface marks, visible wiring, or minor\n    cosmetic differences may occur between units. These characteristics do not\n    affect normal operation and should be expected from a small-batch handmade\n    product.\n  \u003c\/p\u003e\n\n  \u003ch2\u003eWhat's Included\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 × Handheld Bluetooth chord controller\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eBefore ordering:\u003c\/strong\u003e Please confirm your iPhone model, iOS\n    version, connection port, intended app, and power requirements with us.\n    Cable, power bank, phone, and other accessories are not included unless\n    explicitly stated in the selected option.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cem\u003e\n      Product functions and appearance may change as the hardware and firmware\n      continue to be developed. This product is not a standalone guitar and\n      does not generate audio without a connected compatible device and app.\n    \u003c\/em\u003e\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Poply Lab","offers":[{"title":"Default Title","offer_id":47097137528988,"sku":null,"price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4058\/8956\/files\/jimeng-2026-06-22-7825.webp?v=1782115671","url":"https:\/\/poplylab.com\/products\/portable-bluetooth-chord-controller-iphone-garageband","provider":"Poply Lab","version":"1.0","type":"link"}