{"product_id":"clusterctrl-stack","title":"ClusterCTRL Stack","description":"\u003cp\u003eThe ClusterCTRL Stack (controller and passive backplane) is a simple way to both power and control cooling for a stack of 5 Raspberry Pi.\u003c\/p\u003e\n\u003ch2\u003eController\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePowered by 12-24V PSU.\u003c\/li\u003e\n\u003cli\u003e20 pin header for Power (2x5V and 2xGND for each Pi).\u003c\/li\u003e\n\u003cli\u003e6 pin header for monitoring of Raspberry Pi (1 GPIO pin per Pi).\u003c\/li\u003e\n\u003cli\u003eOnboard 10 Amp 5.1V DC-DC regulator (2 Amp allowance per Pi).\u003c\/li\u003e\n\u003cli\u003eConnectors for 2 independently controlled fans.\u003c\/li\u003e\n\u003cli\u003eMicro USB for ClusterCTRL allows controlling individual Pi power, fan, auto power on, voltages, etc.\u003c\/li\u003e\n\u003cli\u003eUSB Type-A connector 5V (ONLY) power output, can be used to power a 5V switch for example.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePassive backplane\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConnects between the ClusterCTRL Stack Controller to each Raspberry Pi.\u003c\/li\u003e\n\u003cli\u003e20+6 pin connectors for ClusterCTRL Stack Controller.\u003c\/li\u003e\n\u003cli\u003e20 pin connector for each of the five regular sized Raspberry Pi (B+\/2\/3\/3+\/4).\u003c\/li\u003e\n\u003cli\u003eConnects GPIO BCM18 of each Raspberry Pi to the Controllers monitor header.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUsage\u003c\/h2\u003e\n\u003cp\u003eAs supplied the Controller can be used standalone - once power is applied to the ClusterCTRL Stack each Raspberry Pi will be powered on in 1 second intervals. The GPIO (BCM18) pin from each Raspberry Pi is monitored, when this is set high the corresponding FAN is turned on (P1\/P2 = FAN1 and P3\/P4\/P5 = FAN2) as required to cool the Pi.\u003c\/p\u003e\n\u003cp\u003eYou can use any software on the Raspberry Pi nodes (Raspberry Pi OS\/Ubuntu\/etc.). To control the nodes you will need to \u003ca href=\"https:\/\/8086.support\/?action=faq\u0026amp;cat=23\u0026amp;id=120\u0026amp;artlang=en\" target=\"_blank\"\u003einstall the clusterctrl software\u003c\/a\u003e. Currently this needs to be manually installed - see the \u003ca href=\"https:\/\/8086.support\/?action=faq\u0026amp;cat=23\u0026amp;id=120\u0026amp;artlang=en\" target=\"_blank\"\u003eFAQ entry\u003c\/a\u003e for manual installation steps.\u003c\/p\u003e\n\u003cp\u003eTo enable the fans to be turned on\/off automatically when a Raspberry Pi requires cooling add the following to \u003cem\u003e\/boot\/config.txt\u003c\/em\u003e on each Raspberry Pi (in the example below it will turn the FAN on at 75C and off at 65C).\u003c\/p\u003e\n\u003cp\u003e\u003ccode\u003edtoverlay=gpio-fan,gpiopin=18,temp=75000\u003c\/code\u003e\u003c\/p\u003e\n\u003cp\u003eConnecting the ClusterCTRL Controller (via the Micro USB connector) you can use the \"clusterctrl\" tool which allows you to.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl power for each Raspberry Pi individually.\u003c\/li\u003e\n\u003cli\u003eGanged FAN On\/Off (when \"off\" the individual fans are still controlled via GPIO as above).\u003c\/li\u003e\n\u003cli\u003eMeasures both the voltage supplied to the Raspberry Pi and the 12-24V input voltage.\u003c\/li\u003e\n\u003cli\u003eConfigure power on state (each individual Pi can be set on\/off by default).\u003c\/li\u003e\n\u003cli\u003eA single Controller Pi can control many ClusterCTRL devices (Stack\/Triple\/Single\/etc).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e8086 recommend using two 70mm fans for cooling, one for the ClusterCTRL Stack Controller+P1+P2 (FAN1) and the other for P3\/P4\/P5 (FAN2).\u003c\/p\u003e\n\u003ch2\u003eWhat comes with the ClusterCTRL Stack\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClusterCTRL Stack Backplane.\u003c\/li\u003e\n\u003cli\u003eClusterCTRL Stack Controller.\u003c\/li\u003e\n\u003cli\u003e4x M2.5 12 mm F-F spacer.\u003c\/li\u003e\n\u003cli\u003e24x M2.5 25 mm M-F spacer.\u003c\/li\u003e\n\u003cli\u003e8x M2.5 6 mm screws.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat do I need to use the ClusterCTRL Stack?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e12-24 Volt Power Supply with 5.5 mm 2.1\/2.5mm barrel jack (60 Watt recommended minimum).\u003c\/li\u003e\n\u003cli\u003e5x \u003ca href=\"\/en-eu\/products\/raspberry-pi-4\" target=\"_blank\"\u003eRaspberry Pi\u003c\/a\u003e (Pi2\/3\/3+\/4).\u003c\/li\u003e\n\u003cli\u003e2x 70 mm 5V fans \u003cstrong\u003e(optional)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eController Pi (can be one of the stack) \u003cstrong\u003e(optional)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eUSB Cable to connect to controller \u003cstrong\u003e(optional).\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eEthernet Switch \u003cstrong\u003e(optional)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCases\u003c\/h2\u003e\n\u003cp\u003eSTL files for the 3D printed case are available on \u003ca href=\"https:\/\/pinshape.com\/items\/98243-3d-printed-clusterctrl-stack-frame-case\" target=\"_blank\"\u003ePinshape\u003c\/a\u003e.\u003c\/p\u003e","brand":"8086","offers":[{"title":"Default Title","offer_id":32170109632595,"sku":"8086-012","price":74.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/2020-07-26T19_32_06.255Z-ClusterCTRL-Stack-Assembled.jpg?v=1605537378","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/clusterctrl-stack","provider":"Pimoroni Ltd","version":"1.0","type":"link"}