Read Battery Voltage, Remaining Power and Set Low Power Interrupt Alert Interface: Gravity I2C (logic level: 0-3.3V).Battery Type(BAT IN): 3.7V Li-polymer/Li-ion battery.
Battery Input Voltage (BAT IN): 2.5V~4.2V.Programmable low power alert interrupt threshold.Wide input voltage, compatible with 3.3V and 5V controllers.No charge-discharge relearning process, no offset accumulation errors, plug and play.Maxim's patented algorithm, accurate voltage and remaining power readings of lithium battery.In the solar powered projects, it helps to record the status of the battery power change in a day or even months, which benefits to understand the power balance of charge and discharge of the solar system. You will find it a great help to estimate the battery life by learning the power consumption of the system with this module. When the battery power falls below specified threshold, the ALR pin generates a falling pulse to trigger the external interrupt of the controller. The module also features as a low battery power alert interrupt function. Plug and play to accurately measure the voltage and remaining power of the battery. The Gravity 3.7V Lithium Battery Fuel Gauge employs Gravity I2C interface, ultra-low operating current, and real-time tracking of the relative state of charge (SOC) of the battery through Maxim's patented algorithm, eliminating the need for full-to-empty relearning and offset accumulation errors.
#Dfrobot gravity circuit full#
We can only roughly judge whether the battery is full or almost empty according to its voltage. However, The remaining power and voltage of the lithium battery are highly nonlinear. Project introduction: We are going to make a table clock showing time in a lovely way. This product has quite cute look and the LED screen make it cool.3.7V lithium batteries are commonly used in many projects.
It is an ideal choice for timing project. Gravity SD2405 RTC can work as data logger, timer alarm clock and other time application. Time trimming circuit that adjusts the clock with higher precision by adjusting any errors in crystal oscillator frequencies based on signals from the CPU.Ī 12-bytes general SRAM is implemented in the SD2405AL. It also provides a selectable 32.768KHz~1Hz clock output for an external MCU. The SD2405AL can generates various periodic interrupt clock pulses lasting for long period (one year), and three alarm interrupts can be made by year, month,ĭate, days of the week, hours, and minutes, seconds. Even there is no external power, it can still work for 5~8 years, 1uA ultra-low power consumption (inner battery, The primary power supply and battery automatically.
When the primary power supply goes down to an assigned value or resumes from low power, the system can switch between The SD2405AL is dual power supply system. The SD2405AL is available in industrial temperature ranges. This is an extremely accurate I2C real-time clock (RTC) with crystal compensation, inner chargeable battery. We're glad to introduce a new member in Gravity family: Gravity I2C SD2405 RTC module.
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