![]() Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. To complete your return, we require a receipt or proof of purchase, ![]() It must also be in the original packaging, ![]() To be eligible for a return, your item must be unused and in the same condition that you received it. If 14days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. Near-Filed Perception to get notification automatically Show the state of charge of battery in real time ![]() QUICKLYNKS Battery Monitor BM2 Bluetooth 4.0 Deviceġ.Receive notification of battery conditions when enter BLE rangeĢ.Check starting system and charging system (alternator) Ĥ.Alert mobile phone if some data abnormal Ħ.Short-circuit and reverse connection protectionħ.Data stored in device up to 35days if out of syncĨ.Ultra-low power consumption, average current: 1.0 mA ġ1.Compatible with all 12-volt vehicle batteries Ĭheck battery state on phone APP via Bluetooth 4.0 when device is installed Tmr.alarm(0, 10000, 1, function() readUI() LCDout() tmr.delay(1000) end)Ĭonn:send("Battery Live Monitor System - ESP8266")Ĭonn:send("Node.HEAP : ". St7032i:lcd_print(1,1,string.format("Battery Monitor")) If (fnr Voltage / Current / Energy / Powerįor more details about the I2C LCD Driver, please take a look at the ST7032i LCD Driver Article Nrf=string.format(" %.3f%s ",fnri, uniti) Number format function for proper LCD printing READ ADC Process function and instantaneous Power consumtion calculation Resdiv = 4.31447 - Voltage Divider Ratio - CALIBRATE!!ĭivalI = 0.9425 - Current volt/div ratio - CALIBRATE!! 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) Instantaneous power is given by multiplying the measured voltage by the calculated current (P=U*I).īy 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.ĪDC_SRC = 5 - GPIO14 - select Voltage Divider / Current Input Using Ohm's Law (I=U/R) we can then calculate the current flowing through the load since we know the voltage across it. 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. 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.
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