{"product_id":"io-expander","title":"IO Expander Breakout","description":"\u003cp\u003eAdd oodles of extra analog-friendly input and output pins to your Raspberry Pi project!\u003c\/p\u003e\n\u003cp\u003eThis breakout uses a clever Nuvoton MS51 microcontroller and some I2C magic to give you a whopping\u003cstrong\u003e 14 additional input\/output pins\u003c\/strong\u003e to connect things up to. It's an easy, affordable way to add an \u003cstrong\u003eAnalog to Digital Converter\u003c\/strong\u003e to a Raspberry Pi, so you can use old skool analog sensors, as well as passive components that use an analog signal (like light dependent resistors).  If you'd rather, you can just use these pins as extra digital IO.\u003c\/p\u003e\n\u003cp\u003eSix of the pins can be used as (up to 16-bit) \u003cstrong\u003ePWM outputs\u003c\/strong\u003e - great for controlling devices that require a simulated analog output, like servos or non-addressable LEDs.\u003c\/p\u003e\n\u003cp\u003eYou can attach it to your Pi's GPIO directly or via a breadboard with the included headers, but it's also compatible with our fancy solderless \u003ca href=\"\/en-eu\/products\/breakout-garden-hat-i2c-spi\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBreakout Garden\u003c\/a\u003e, which makes it super easy to use several different breakouts at the same time. Why not couple it with one of of our \u003ca href=\"\/en-eu\/products\/1-12-oled-breakout?variant=29421050757203\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eteeny display breakouts\u003c\/a\u003e to show the results from all those lovely sensors?\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.nuvoton.com\/products\/microcontrollers\/8bit-8051-mcus\/industrial-8051-series\/ms51xb9ae\/?__locale=en\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNuvoton MS51 microcontroller \u003c\/a\u003ewith inbuilt 12-bit ADC\u003c\/li\u003e\n\u003cli\u003eI2C interface, with a default address of 0x18\u003c\/li\u003e\n\u003cli\u003e3.3V or 5V compatible\u003c\/li\u003e\n\u003cli\u003eReverse polarity protection (input side only)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRaspberry Pi-compatible pinout (pins 1, 3, 5, 7, 9)\u003c\/li\u003e\n\u003cli\u003eCompatible with all models of Raspberry Pi.\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/pimoroni\/ioe-python\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ePython library\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.nuvoton.com\/export\/resource-files\/DS_MS51_16KBFlash_Series_EN_Rev1.01.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDatasheet\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKit includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIO Expander Breakout\u003c\/li\u003e\n\u003cli\u003e1x5 straight male header\u003c\/li\u003e\n\u003cli\u003e1x5 right angle female header\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe've designed this breakout board so that you can solder on the piece of right angle female header and pop it straight onto the bottom left 5 pins on your Raspberry Pi's GPIO header (pins 1, 3, 5, 7, 9).\u003c\/p\u003e\n\u003ch2\u003eSoftware\u003c\/h2\u003e\n\u003cp\u003eWe've put together a \u003ca href=\"https:\/\/github.com\/pimoroni\/ioe-python\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ePython library\u003c\/a\u003e (with a quick and painless one-line-installer) to use with your IO Expander, together with some handy \u003ca href=\"https:\/\/github.com\/pimoroni\/ioe-python\/tree\/master\/examples\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eexamples\u003c\/a\u003e that show you how to interact with different kinds of devices.\u003c\/p\u003e\n\u003ch2\u003eNotes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe default I2C address is 0x18, but it's possible to change this in software if you'd like to use multiple IO Expanders, or avoid conflicts with other I2C devices.  The new address will be saved in flash memory, so will persist if unpowered.\u003c\/li\u003e\n\u003cli\u003eThis board uses a Nuvoton MCU with our custom firmware but if you're brave and hackerly, you can substitute your own firmware to change the way this board works and have a super cheap and capable microcontroller (though this is not for the faint of heart!)\u003c\/li\u003e\n\u003cli\u003eDimensions: 26x24.5x12mm (LxWxH)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pimoroni","offers":[{"title":"Default Title","offer_id":32018163138630,"sku":"PIM517","price":7.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0389\/1025\/products\/IoExpander_1of1.jpg?v=1595841458","url":"https:\/\/wholesale.pimoroni.com\/en-eu\/products\/io-expander","provider":"Pimoroni Wholesale","version":"1.0","type":"link"}