{"product_id":"3pcs-i2c-8-bit-i-o-expander-module-pca8574ad-expansion-board-robotdyn-for-arduino-products-that-work-with-official-for-arduino-boards","title":"3pcs I2C 8-bit I\/O Expander Module PCA8574AD Expansion Board RobotDyn for Arduino - products that work with official for Arduino boards","description":"\u003cdiv id=\"specification\"\u003e\u003c\/div\u003e\u003cdiv id=\"specification_end\"\u003e\u003c\/div\u003e\u003cspan class=\"ant-form-item-children\"\u003e\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 for 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\n\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eThe I2C bus on the for Arduino uses SCL, SDA, a couple of pull up resistors and the Wire library.\u003c\/span\u003e\u003c\/div\u003e\n\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\n\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eOn the backside of the board have instruction.\u003c\/span\u003e\u003c\/div\u003e\n\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\n\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\u003e3 x Expansion Board\u003c\/span\u003e\u003c\/div\u003e\u003c\/span\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/2A\/09\/2594e6b3-5690-4ee9-a999-bdad392f6ac8.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/78\/10\/335d1932-6e67-48f7-8699-7a08fea71a32.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/9A\/17\/229b8de4-be55-422f-ac20-b0ecc87a6a04.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/6F\/CF\/b9c0cc4f-7b31-480a-b306-c34bf8a64645.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/D8\/A7\/2d6d0319-4508-4f44-b8a8-c4f1b2645581.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e","brand":"Electronic Pro","offers":[{"title":"Default Title","offer_id":35461594611868,"sku":"1705023","price":673.29,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2787\/9162\/products\/2594e6b3-5690-4ee9-a999-bdad392f6ac8.jpg?v=1597131269","url":"https:\/\/electronic-pro-south-africa.myshopify.com\/products\/3pcs-i2c-8-bit-i-o-expander-module-pca8574ad-expansion-board-robotdyn-for-arduino-products-that-work-with-official-for-arduino-boards","provider":"Electronic Pro ","version":"1.0","type":"link"}