{"product_id":"i2c-8-bit-i-o-expander-module-pca8574ad-expansion-board","title":"I2C 8-bit I\/O Expander Module PCA8574AD Expansion Board","description":"\u003cspan style=\"font-size:14px;\"\u003e\u003cstrong\u003eFeature:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eIf you just don't have enough digital I\/O pins on your Arduino to interface with all your sensors and controls, you might want to look at using the I2C bus to connect a few port expander chip PCA8574AD have 8 digital I\/O bits and can be set to addresses 0x38-0x3F respectively.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eThe I2C bus on the Arduino uses SCL, SDA, a couple of pull up resistors and the Wire library.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eYou can connect more expander module. More 8 modules. Just change the address of each module.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eOn the backside of the board have instruction.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eIf you need more connecting modules, pls cut off the connection of pull-up resistor on the back side of board. \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eOnly 1 board needs a pull-up resistor.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePackage includes:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e1 x Expansion Board\u003c\/span\u003e\u003c\/div\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/ser1\/banggood\/images\/B6\/7A\/3fe073fc-eea1-4c4c-9023-91dd9b3b7d8a.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/ser1\/banggood\/images\/AC\/67\/b862e3d2-e007-42f8-9e15-d3fe958456c5.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/ser1\/banggood\/images\/19\/2F\/0a708658-1dfe-4a0f-a9eb-a5603df9a10c.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/ser1\/banggood\/images\/19\/5F\/8d43a3f4-d372-4b12-a565-e6ca5a3b0b26.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/ser1\/banggood\/images\/FF\/8B\/86fe1ee6-5871-4a8a-aa11-2743891f4ace.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/ser1\/banggood\/images\/0C\/1C\/d40492f2-2e67-4a07-94aa-6f474182d500.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/ser1\/banggood\/images\/F5\/11\/46932171-adde-49e3-b6ff-96a2b4ff4249.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/ser1\/banggood\/images\/C9\/77\/b39a8b37-2732-42f9-9646-b8dea134ab0b.jpeg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/imgaz.staticbg.com\/images\/oaupload\/ser1\/banggood\/images\/70\/C4\/d7f803c2-f8fb-467c-af2f-0ef2900f8e0e.jpeg\"\u003e","brand":"Electronic Pro","offers":[{"title":"Default Title","offer_id":35461669388444,"sku":"1645980","price":270.69,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2787\/9162\/products\/b39a8b37-2732-42f9-9646-b8dea134ab0b.jpg?v=1597131355","url":"https:\/\/electronic-pro-south-africa.myshopify.com\/products\/i2c-8-bit-i-o-expander-module-pca8574ad-expansion-board","provider":"Electronic Pro ","version":"1.0","type":"link"}