{"product_id":"timer-power-unit-with-oled-display-ina3221","title":"Timer Power Unit with OLED Display (INA3221)","description":"\u003cp\u003eThis Timer Power Unit is a smart power supply device that charges and discharges, has timed switching and boosts output. Power is provided through a \u003ca href=\"\/nl\/products\/usb-a-to-usb-c-cable-1m\"\u003eType-C connector\u003c\/a\u003e and can also connect to an external rechargeable battery through a 1.25-2P interface. With an internal STM32 microcontroller handling RTC and overall control, you can set automatic power on and off times.\u003c\/p\u003e\n\u003cp\u003eThis includes a built-in battery charging circuit that supports a charging current of 330mA and an integrated DC-DC boost circuit that delivers a 5V\/800mA power output (up to 1400mA with a fully charged battery) to external devices through the \u003ca href=\"\/nl\/search?q=Grove\u0026amp;narrow_by=\u0026amp;sort_by=relevency\u0026amp;page=1\"\u003eGrove\u003c\/a\u003e port. The INA3221 sensor provides real-time monitoring of input and output current and voltage, giving you a clear view of power performance.\u003c\/p\u003e\n\u003cp\u003eA 0.66\" OLED display with two side buttons can check the system status and adjust settings. You can configure parameters such as power scheduling directly using the buttons or through the \u003ca href=\"\/nl\/products\/4pin-buckled-grove-cable\"\u003eGrove port\u003c\/a\u003e using I2C commands. This makes the unit easy to integrate into smart systems or timed control setups.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRTC cycle timing control\u003c\/li\u003e\n\u003cli\u003eBattery power supply\u003c\/li\u003e\n\u003cli\u003eBuilt-in DC-DC boost circuit\u003c\/li\u003e\n\u003cli\u003eCurrent\/voltage monitoring\u003c\/li\u003e\n\u003cli\u003eOLED display\u003c\/li\u003e\n\u003cli\u003eGrove interface\u003c\/li\u003e\n\u003cli\u003eButton-controlled power on\/off mode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable width=\"1038\" style=\"height: 436px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eMCU\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eSTM32G031G8U6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eInput Voltage\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eSupports 5V DC input (via Type-C interface)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eBuilt-in DCDC boost circuit, output 5V for external devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eBattery Power Supply\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e3.7V Polymer Lithium Battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eDisplay Screen\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e0.66\" OLED display, resolution 64 x 48, SPI communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd rowspan=\"3\" style=\"height: 57px; width: 281.875px;\"\u003eConnectors\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eType-C interface: for battery charging (cannot power Grove port directly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eGrove interface: for external sensors and modules, supports communication and power output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eBattery interface: 1.25mm@2P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eI2C Communication Address\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e0x56\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eCurrent Sensor\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eINA3221\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eCharging Current\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eDC5V@330mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eCharging Chip\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eLGS4056H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eCharging Temperature\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd rowspan=\"4\" style=\"height: 75px; width: 281.875px;\"\u003eGrove Port Max Current Output\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eDependent on battery capacity and discharge ability, e.g.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e1400mAh@1C 3.7V: DC4.96V@800mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 746.69px;\"\u003e500mAh@1C 3.7V: DC4.97V@700mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e110mAh@1C 3.7V: DC5.03V@400mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eStandby Current\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003eDC4.2V@36.67uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e0-40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eProduct Dimensions\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e40 x 24 x 11mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003ePackage Dimensions\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e136 x 92 x 14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003eProduct Weight\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e7.6g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19px;\"\u003e\n\u003ctd style=\"height: 19px; width: 281.875px;\"\u003ePackage Weight\u003c\/td\u003e\n\u003ctd style=\"height: 19px; width: 746.69px;\"\u003e12.9g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/docs.m5stack.com\/en\/unit\/Unit-Timerpwr\"\u003eProduct Wiki\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Timer Power Unit\u003c\/li\u003e\n\u003cli\u003e1x HY2.0 4-pin Grove Cable (20cm)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"M5Stack","offers":[{"title":"Default Title","offer_id":50847119212817,"sku":"U189","price":9.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/timer-power-unit-with-oled-display-ina3221-m5stack-u189-72165004345729.jpg?v=1735207286","url":"https:\/\/abcd3032.myshopify.com\/nl\/products\/timer-power-unit-with-oled-display-ina3221","provider":"Tayyab Zak","version":"1.0","type":"link"}