{"product_id":"witty-pi-3-rev2-discontinued","title":"Witty Pi 3 Rev2 [Discontinued]","description":"\u003cp\u003eThe Witty Pi 3\u003cstrong\u003e Rev2\u003c\/strong\u003e is the latest generation of the Witty Pi 3!\u003c\/p\u003e\n\u003cp\u003eThis new revision changes the 5V input connecter from micro-USB to \u003cstrong\u003eUSB-C\u003c\/strong\u003e, and replaces the onboard linear regulator (LM29150) with switching DC\/DC converter (MP4462). These changes give the Witty Pi 3 a much better ability to output a higher level of current (3A) and also widen the range of input voltage (up to DC 28V).\u003c\/p\u003e\n\u003cp\u003eThe Witty Pi 3 adds a real-time clock (RTC) and power management to your Raspberry Pi, and can define complex ON\/OFF sequences with a simple script. The board supports all Raspberry Pi models with 40-pin header.\u003c\/p\u003e\n\u003ch2\u003e\u003c\/h2\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePower your Raspberry Pi with higher voltage (up to DC 28V)\u003c\/li\u003e\n\u003cli\u003eGracefully turn on\/off Raspberry Pi with a single tap on the button\u003c\/li\u003e\n\u003cli\u003eFully cut the power of Raspberry Pi and all its USB peripherals after shutdown\u003c\/li\u003e\n\u003cli\u003eAutomatically synchronise time between the real-time clock and Raspberry Pi\u003c\/li\u003e\n\u003cli\u003eMonitor the temperature around your Pi (thanks to the sensor in the RTC chip)\u003c\/li\u003e\n\u003cli\u003eSchedule the startup\/shutdown of your Raspberry Pi\u003c\/li\u003e\n\u003cli\u003eWrite a script to define complex ON\/OFF sequence\u003c\/li\u003e\n\u003cli\u003eShutdown Raspberry Pi when the input voltage is lower than the threshold value\u003c\/li\u003e\n\u003cli\u003eTurn on Raspberry Pi when input voltage raise over the threshold value\u003c\/li\u003e\n\u003cli\u003eLong hold the button to force power cut (when the OS loses response)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWitty Pi 3 Rev2 uses a DS3231SN as the real-time clock and ATtiny841 as the micro-controller. Thanks to the on-board DC\/DC converter (MP4462), the Witty Pi 3 Rev 2 can accept input voltages up to 28V.\u003c\/p\u003e\n\u003cp\u003eYou can find much more information in the user manual.\u003c\/p\u003e\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eInstallation is easy - just run these two commands in your Raspberry Pi to install Witty Pi 3’s software:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewget https:\/\/www.uugear.com\/repo\/WittyPi3\/install.sh\u003c\/li\u003e\n\u003cli\u003esudo sh install.sh\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThen mount the Witty Pi 3 Rev2 on your Raspberry Pi and build your next project!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUpdate 17\/03\/21:\u003c\/strong\u003e UUGear have discovered a bug in the V1.03, ID=0x23 firmware which may cause the device to lose response after being woken up by a startup alarm. A new version of the firmware (V1.04, ID=0x24) resolves this issue. This document describes how to check your version and update if necessary.\u003c\/p\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cp\u003eEach Witty Pi 3 Rev2 package contains:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1x Witty Pi 3 Rev2 board\u003c\/li\u003e\n\u003cli\u003e1x CR2032 battery\u003c\/li\u003e\n\u003cli\u003e4x M2.5 x 11mm Copper Standoff\u003c\/li\u003e\n\u003cli\u003e8x M2.5 screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDimensions: 65mm x 56mm x 19mm\u003c\/li\u003e\n\u003cli\u003eWeight: 23g (net weight without battery)\u003c\/li\u003e\n\u003cli\u003eBattery: CR2032 (for time and alarm keeping)\u003c\/li\u003e\n\u003cli\u003ePower In: DC 5V (via USB type C connector) or DC 6V~28V (via XH2.54 connector)\u003c\/li\u003e\n\u003cli\u003eOutput Current: Up to 3A for Raspberry Pi and its peripherals\u003c\/li\u003e\n\u003cli\u003eStatic Current: ~1mA\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -30℃~80℃ (-22°F~176°F)\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: -40℃~85℃ (-40°F~185°F)\u003c\/li\u003e\n\u003cli\u003eHumidity: 0~80%RH, no condensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch2\u003eSoftware\u003c\/h2\u003e\n\u003cp\u003eThe Software for Witty Pi 3 is written with BASH (Unix shell). The source code is public on Github: https:\/\/github.com\/uugear\/Witty-Pi-3\u003c\/p\u003e\n\u003cp\u003eTo install the software, just run these two commands:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ewget https:\/\/www.uugear.com\/repo\/WittyPi3\/install.sh\u003c\/li\u003e\n\u003cli\u003esudo sh install.sh\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAfter installation is complete, reboot your Raspberry Pi.\u003c\/p\u003e\n\u003cp\u003eTo launch the Witty Pi utility, just run these commands:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecd wittypi\u003c\/li\u003e\n\u003cli\u003e~\/wittypi $ .\/wittyPi.sh\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMore details about software installation and usage can be found in the user manual.\u003c\/p\u003e\n\u003ch2\u003eConflict with 1-wire Interface\u003c\/h2\u003e\n\u003cp\u003eIf you have 1-Wire interface enabled and didn’t specify the GPIO pin for 1-Wire, \u003cstrong\u003eit will use GPIO-4 and that conflict with Witty Pi\u003c\/strong\u003e. Witty Pi uses GPIO-4 to receive shutdown commands, if GPIO-4 is also assigned to 1-Wire, Witty Pi’s software will receive shutdown commands unexpectedly.\u003c\/p\u003e\n\u003cp\u003eIf your Raspberry Pi always automatically shutdown itself after installing Witty Pi’s software, that most probably due to the confliction with 1-Wire interface.\u003c\/p\u003e\n\u003cp\u003eWhen this happens, you most probably can not log in to your Raspberry Pi because it always shuts itself down before you get the chance to log in. To solve this problem, you will need to take out the micro-SD card on your Raspberry Pi, and access its file system via a card reader. You need to edit the config.txt file in the “boot” volume to change the GPIO pin used by 1-Wire interface, or you can disable 1-Wire interface if you don’t need it for now. You need to find something like “dtoverlay=w1-gpio” in the file.\u003c\/p\u003e\n\u003cp\u003eIf you want 1-Wire to use GPIO-18, just change “dtoverlay=w1-gpio” to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003edtoverlay=w1-gpio,gpiopin=18\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you want to disable 1-Wire interface, just comment it out:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e#dtoverlay=w1-gpio\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSave the file and eject your micro SD card, and put it back to your Raspberry Pi. Now your Raspberry Pi should be able to boot normally.\u003c\/p\u003e\n\u003ch2\u003eSchedule Script Generator\u003c\/h2\u003e\n\u003cp\u003eYou can now use the UUGear web app to create and debug the schedule script for Witty Pi.\u003c\/p\u003e","brand":"UUGear","offers":[{"title":"Default Title","offer_id":48620809519326,"sku":"xhr1787258033948","price":16.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/0705\/9422\/files\/witty-pi-3-rev2-discontinued_1.jpg?v=1787258042","url":"https:\/\/primewearfashion.shop\/products\/witty-pi-3-rev2-discontinued","provider":"My Store","version":"1.0","type":"link"}