{"product_id":"sixteen-lv-digital-inputs-8-layer-stackable-hat-for-raspberry-pi-v31-discontinued","title":"Sixteen LV Digital Inputs 8-Layer Stackable HAT for Raspberry Pi (v3.1) [Discontinued]","description":"\u003cp\u003eRaspberry Pi can read 26 Input signals through the GPIO header, but sometimes you might need to read more. Since all GPIO pins are wired directly to the local processor, some hardware is required to connect them to the real world.\u003c\/p\u003e\n\u003cp\u003eThis card has sixteen optically isolated Digital Inputs. Input ranges can be jumper-selected for each channel, from 3 volts to 48 volts. Digital Inputs can read both DC and AC signals.\u003c\/p\u003e\n\u003cp\u003eThe card communicates with Raspberry Pi using only the I2C port, leaving all the other 24 GPIO pins available for your use. It also has an RS-485 port, a power LED and a push button that can be used to shut down the Raspberry Pi. Pluggable connectors make the 16-INPUTS card easy to use when multiple cards are stacked up. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor any technical questions about this product please email \u003c\/span\u003esupport@sequentmicrosystems.com\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSixteen LV Digital Inputs 8-Layer Stackable HAT for Raspberry Pi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNEW FEATURES IN VERSION 3:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e*NEW*:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eLocal processor permits standalone operation (no Raspberry Pi)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e*NEW*:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHardware watchdog resets Raspberry Pi in case of software lockup\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e*NEW*:\u003c\/strong\u003e 3 PIN RS385 Connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e*NEW*:\u003c\/strong\u003e 8 extra LEDs (total 16 LEDs, one for each input)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e*NEW*:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eDIP Switch Stack Level and RS485 selection (no more jumpers)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eInputs can be accessed from any PLC using RS485\/MODBUS\u003c\/li\u003e\n\u003cli\u003eSixteen LV Digital Inputs 8-Layer Stackable HAT for Raspberry Pi\u003c\/li\u003e\n\u003cli\u003eAll inputs opto-isolated reading 3V-48V AC\/DC\u003c\/li\u003e\n\u003cli\u003eEight-layer stackable to 128 inputs\u003c\/li\u003e\n\u003cli\u003eCan interrupt Raspberry Pi on any change of input (no need for polling)\u003c\/li\u003e\n\u003cli\u003ePluggable Connectors 26-16 AWG wires\u003c\/li\u003e\n\u003cli\u003eRS485\/MODBUS port\u003c\/li\u003e\n\u003cli\u003e16 LEDs showing status of each input\u003c\/li\u003e\n\u003cli\u003eGeneral purpose push-button\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSixteen LV Digital Inputs for Raspberry Pi\u003c\/li\u003e\n\u003cli\u003eUses only I2C port, all GPIO pins available\u003c\/li\u003e\n\u003cli\u003eWorks with any Raspberry Pi from ZERO to 5\u003c\/li\u003e\n\u003cli\u003eECCN Code EAR99\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOperating temperature range: -40 to +85  °C\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eStorage temperature range:  –65 to +150 °C\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eCommand Line Driver \u003c\/li\u003e\n\u003cli\u003ePython Library\u003c\/li\u003e\n\u003cli\u003eNode-Red nodes\u003c\/li\u003e\n\u003cli\u003eCODESYS Driver\u003c\/li\u003e\n\u003cli\u003eOpenPLC module\u003c\/li\u003e\n\u003cli\u003eCODESYS Library\u003c\/li\u003e\n\u003cli\u003e\nHome Assistant Integration\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThe card is compatible with all Raspberry Pi versions from Zero to the Pi 4. All stacked cards share the I2C bus using only two of the Raspberry Pi’s GPIO pins to manage all eight cards. This feature leaves the remaining 24 GPIOs available for the user.\u003c\/p\u003e\n\u003ch3\u003ePower Requirements\u003c\/h3\u003e\n\u003cp\u003eThe card needs 5V to operate and can be powered from the Raspberry Pi or from its own 2-pin pluggable connector. The card draws 10mA. If power is applied to the 2-pin pluggable connector, no other power supply is needed for the Raspberry Pi.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eLED Indicators\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv\u003eA power LED shows when power is applied to the board. Due to space limitations, eight LEDs shows the status of groups of 8 inputs. Inputs 1-8 or 9-16 can be selected from a jumper or from a Raspberry Pi GPIO pin. \u003c\/div\u003e\n\u003ch3\u003eStacking Multiple Cards\u003c\/h3\u003e\n\u003cp\u003eUp to eight cards can be stacked on your Raspberry Pi. Each card is identified by jumpers you install to indicate the level in the stack. Cards can be installed in any order. A three-position jumper selects the stack level.\u003c\/p\u003e\n\u003ch3\u003eReset Pushbutton\u003c\/h3\u003e\n\u003cp\u003eShutting down the Raspberry Pi by turning off the power can result in SD Card failure. To prevent this, a shutdown command needs to be used before power cut-off. But this requires a monitor, keyboard and mouse connected to the Pi.\u003c\/p\u003e\n\u003cp\u003eA momentary push-button installed at the edge of the board provides a convenient way to shut down the Raspberry Pi. The button is routed to pin 37 (GPIO 26). You need to write a script that monitors this pin, and if pressed for more than the desired time, issues the shut-down command.\u003c\/p\u003e\n\u003ch3\u003eRS485 Port\u003c\/h3\u003e\n\u003cp\u003eAn RS485 transceiver enables the Raspberry Pi to connect to other industrial sensors or actuators. In order to use the RS485 port, a jumper needs to be installed on the RXD line going to Raspberry Pi. The jumper is marked RS485 in the layout below. If the jumper is not installed, the RXD line from Raspberry Pi can be used as GPIO.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eDIN-Rail Mounting\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe card can be installed parallel on a DIN-Rail using the DIN-Rail Kit Type 1, or perpendicular using the DIN-Rail Kit Type 2. Shown here is a perpendicular installation which can be expanded to 8 cards.\u003c\/p\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eProduct documentation site\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSoftware Interfaces\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eYou can write your own application using the \u003c\/span\u003eCommand Line\u003cspan\u003e or \u003c\/span\u003ePython Library\u003cspan\u003e provided. No programming is required if you use the \u003c\/span\u003eNode-Red nodes\u003cspan\u003e we supply. You can drag-and-drop the functional blocks to design your application. Examples are provided at GitHub.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eQuick Start\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePlug your 16-INPUTS card on top of your Raspberry Pi and power up the system.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnable I2C communication on Raspberry Pi using raspi-config.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInstall the card software from github.com:\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e~$ git clone https:\/\/github.com\/SequentMicrosystems\/16inpind-rpi.git\u003cbr\u003e~$ cd \/home\/pi\/16inpind-rpi\u003cbr\u003e~\/16inpind-rpi$ sudo make install\u003cbr\u003e~\/16inpind-rpi$ 16inpind -h\u003cbr\u003eThe program will respond with a list of available commands.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eElectrical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply: 5V\/8A pluggable connector with reverse polarity protection\u003c\/li\u003e\n\u003cli\u003eOn board resettable fuse: 3A\u003c\/li\u003e\n\u003cli\u003eOpto-isolated Digital Inputs:\u003c\/li\u003e\n\u003cli\u003eInput Forward Current: Typical 5 mA, maximum 50 mA\u003c\/li\u003e\n\u003cli\u003eLow Voltage Input Series Resistor: 2.2K\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIsolation Voltage between inputs and ground: 5,000Vrms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x 16-inputs card for Raspberry Pi\u003c\/li\u003e\n\u003cli\u003eFour M2.5x18mm male-female brass standoffs\u003c\/li\u003e\n\u003cli\u003eFour M2.5x5mm brass screws\u003c\/li\u003e\n\u003cli\u003eFour M2.5 brass nuts\u003c\/li\u003e\n\u003cli\u003eMating connector plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRevision History\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs of 18\/06\/2025\u003c\/strong\u003e - We are now stocking version 3.1 (minor component supply changes, no change to funcationality)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs of 09\/12\/2024\u003c\/strong\u003e - We are now stocking board version 3.0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs of 01\/11\/2022\u003c\/strong\u003e we are now offering an updated version from Sequent which no longer offers jumper-selectable higher voltage input ranges (as well as some PCb layout changes)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sequent","offers":[{"title":"Default Title","offer_id":48624155984090,"sku":"ryc1789685021964","price":41.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0824\/8318\/3834\/files\/sixteen-lv-digital-inputs-8-layer-stackable-hat-for-raspberry-pi-v31-discontinue_1.jpg?v=1789685027","url":"https:\/\/memoryfoamwear.shop\/products\/sixteen-lv-digital-inputs-8-layer-stackable-hat-for-raspberry-pi-v31-discontinued","provider":"My Store","version":"1.0","type":"link"}