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1. #Wifi battery monitor system pdf#
2. #Wifi battery monitor system drivers#
3. #Wifi battery monitor system driver#
4. #Wifi battery monitor system software#
5. #Wifi battery monitor system series#

#Wifi battery monitor system software#

He’s even offering hardware kits for anyone who’s more interested in experimenting with the software side of things than building the PCB. While has already done the community a great service by releasing the hardware and software under an open source license, he’s also produced some absolutely phenomenal documentation for the project that’s really a valuable resource for anyone who wants to roll their own monitoring system. Data is pulled every 0.5 seconds from a MCP3008 ADC connected to up to five six current sensors to provide real-time utilization statistics, and visualized with Grafana so you can see all of the information at a glance. This project includes provides software and hardware to be used in conjunction with the Raspberry Pi to keep tabs on not just home energy consumption, but also production if your home has a solar array or other method of generating its own power. At a minimum one of these setups involves a microcontroller and some kind of clamp-on current sensor, but if you’re looking for resources to take things a bit farther, this Raspberry Pi energy monitoring system created by would be a great place to start. Tmr.alarm(0, 10000, 1, function() readUI() LCDout() tmr.As the world has become more environmentally conscious, we’ve seen an uptick in projects that monitor or control home energy use. St7032i:lcd_print(1,1,string.format("Battery Monitor"))

#Wifi battery monitor system driver#

If (fnr Voltage / Current / Energy / Powerįor more details about the I2C LCD Driver, please take a look at the ST7032i LCD Driver Article function readUI() Nrf=string.format(" %.3f%s ",fnri, uniti) Number format function for proper LCD printing nr_format = function (fnr,unit) READ ADC Process function and instantaneous Power consumtion calculation function readUI() READ ADC – Current function readADC_Current() READ ADC – Voltage function readADC_Voltage() Resdiv = 4.31447 - Voltage Divider Ratio - CALIBRATE!!ĭivalI = 0.9425 - Current volt/div ratio - CALIBRATE!!Ģ. Voltdiv= 0.00412 - Voltage reading calibrationĭival = 0.00096 - ADC volt/div value - CALIBRATE !! Gpio.write(ADC_SRC,0) - Current Measurement - Current Shunt Monitor output selected Gpio.write(ADC_SRC,1) - Voltage Measurement - Voltage Divider Source selected Gpio.mode(ADC_SRC,gpio.OUTPUT, gpio.PULLUP) Define used GPIO pins and variables: ADC_SRC = 5 - GPIO14 - select Voltage Divider / Current Input

#Wifi battery monitor system drivers#

Instantaneous power is given by multiplying the measured voltage by the calculated current (P=U*I).By taking readings for a certain amount of time until the battery is completly discharged, and adding up the energy dissipated in each time interval, we can calculate the total energy taken from the battery and dissipated in the resistor and therefore the total energy that was stored in the fully charged battery.įor programming CBDBv2 Evo Board and uploading the drivers and the software we will continue to use the LuaUploader as before.ġ. By measuring the voltage across this resistor at regular intervals during the discharge process it is simple to calcuate the total energy dissipated and therefore the total energy which had been stored in the battery.Using Ohm’s Law (I=U/R) we can then calculate the current flowing through the load since we know the voltage across it. In order to measure the stored energy in a battery a power resistor is used as the load, and a fully charged battery is fully discharged through it. Stored energy is measured in Watt-hours – the same unit used to measure our domestic electricity consumption (where 1,000Wh = 1kWh = 1 unit of electricity). When measuring the real battery capacity what we are interested in is the amount of energy stored in a battery since it is this energy we need to power our devices.

#Wifi battery monitor system pdf#

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#Wifi battery monitor system series#

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