{"product_id":"adafruit-dc-power-bff-add-on-for-qt-py","title":"Adafruit DC Power BFF Add-On for QT Py","description":"\u003cp\u003eWe were recently working on a project where we really wanted to power a QT Py ESP32 from 12V - but the only power input on the board is basically USB 5V max. Never one to give up, we designed an add-on that will allow anyone to use a \u003ca href=\"\/collections\/qt-py-xiao-development-boards\"\u003eQT Py or Xiao\u003c\/a\u003e dev board with up to 20V DC power!\u003c\/p\u003e \u003cp\u003eIn the centre is an MPM3610 integrated buck converter, which will generate 5V from up to 20V input with cool DC\/DC technology, so there's no heat sink needed. The MPM3610 can give about 1 Amp output, which should be plenty even if you have LEDs, WiFi connectivity, displays, or even a small motor or servo.\u003c\/p\u003e \u003cp\u003eThe board features a 3.5mm terminal block and 2.1mm DC jack inputs, protected with a \u003ca href=\"https:\/\/byjus.com\/physics\/schottky-diode\/#:~:text=The%20schottky%20diode%20is%20a,a%20low%20forward%20voltage%20drop.\"\u003eSchottky diode\u003c\/a\u003e. You can use either to power the board, but don't plug in different power inputs to both - they're wired directly together on the BFF. If you're using the DC jack to power, you can use the terminal block as a 'pass-through output' to connect other high-voltage devices.\u003c\/p\u003e \u003cp\u003eThere are two small enable and ground solderable pads next to the terminal block, so you can use an external switch to disable the converter.\u003c\/p\u003e \u003cp\u003eSince it's a bulky add-on with through-hole components, compared to most of our other BFF boards, we recommend using a \u003ca href=\"\/search?q=socket+header\u0026amp;narrow_by=\u0026amp;sort_by=relevency\u0026amp;page=1\"\u003esocket header\u003c\/a\u003e to plug a QT Py on top rather than trying to have it solder back-to-back. For that reason, we include two 7-pin socket headers. Solder them so that the QT Py sits on the top, there's two break-apart railings that can be used to bolt the board since plugging in a jack requires mechanical stabilisation.\u003c\/p\u003e \u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"\/\/www.youtube.com\/embed\/G6CCtlya9Hg?si=xQLD2WHzNb9Zx-5K\u0026amp;start=285\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e \u003ch2\u003eSpecifications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eDimensions: 30.4mm x 26.6mm x 12.6mm\u003c\/li\u003e \u003cli\u003eWeight: 4.9g\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eResources\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-dc-power-bff\"\u003ePrimary Guide\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":50847342887185,"sku":"ADA5882","price":7.6,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/adafruit-dc-power-bff-add-on-for-qt-py-the-pi-hut-ada5882-42367087771843.jpg?v=1735211312","url":"https:\/\/abcd3032.myshopify.com\/products\/adafruit-dc-power-bff-add-on-for-qt-py","provider":"Tayyab Zak","version":"1.0","type":"link"}