{"product_id":"20pcs-i2c-8-bit-i-o-expander-module-pca8574ad-expansion-board-robotdyn-for-arduino-products-that-work-with-official-for-arduino-boards","title":"20pcs 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 style=\"font-size: 14px;\"\u003e\u003cspan style=\"font-weight: bolder;\"\u003eFeature:\u003c\/span\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\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\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\u003cspan style=\"font-weight: bolder;\"\u003ePackage includes:\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e20x Expansion Board\u003c\/span\u003e\u003c\/div\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/BD\/AB\/5d3bed52-61ac-4221-9502-3a1dbb0151bd.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/A7\/09\/8b8e1236-2d1f-4fd3-ac9a-72a59de28176.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/C8\/5C\/32c7dd1d-ceae-4415-a984-5b0621f613a3.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/C3\/10\/f27f9fb8-11fd-4065-9210-e559d8a19efc.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"http:\/\/imgmgr.banggood.com\/images\/oaupload\/banggood\/images\/CC\/13\/c8c78e18-dfe7-47ea-8762-993142ed7009.jpeg\" style=\"width:1000px\"\u003e\u003c\/p\u003e","brand":"Electronic Pro","offers":[{"title":"Default Title","offer_id":35461595529372,"sku":"1705019","price":4134.96,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2787\/9162\/products\/5d3bed52-61ac-4221-9502-3a1dbb0151bd.jpg?v=1597131274","url":"https:\/\/electronic-pro-south-africa.myshopify.com\/products\/20pcs-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"}