Voltmeter Unit Voltage Meter DC-DC Isolated 16-bit ADC ±36V

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$19.99

Ex Tax: $19.99

Stock: In Stock
Model: EB0046957
SKU: EB0046957

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Precise details:

Description:

Voltmeter Unit is a voltage meter that can monitor the voltage in real time. The 16-bit ADC (analog-to-digital) converter ADS1115 is used internally to communicate through I2C (0X49). In order to ensure the measurement accuracy, there is a built-in DC-DC isolated power supply, and the I2C interface is also electrically isolated through the low-power isolator CA-IS3020S. This prevents noise and surges on the data bus or other circuits from entering the local ground terminal to interfere or damage sensitive circuits. Each Unit is individually calibrated when leaving the factory, inital Accurancy 0.1%FS, ±1 count, and a maximum measurement voltage of ±36V.

Features:

±36V range

LED power indicator

16-bit ADC conversion

Resolution: Auto range, Count ≤ 16V, 1mV; Count > 16V, 7.9mV

Inital Accurancy 0.1%FS, ±1 count

Built-in CA-IS3020S isolation chip, anti-interference

Isolated DC-DC

Up to 1000 VRMS isolation withstand voltage

Development platform: Arduin, UIFlow (under development)

2x LEiGO compatible holes

Package Included:

1x Voltmeter Unit

1x Grove Cable(20cm)

Application

voltmeter

Specification:

Resources	Parameter
Resolution	Auto range, Count ≤ 16V, 1mV; Count > 16V, 7.9mV
Measuring range	±36V
Inital Accurancy	0.1%FS, ±1 count
Protocol	I2C
Net Weight	9g
Gross Weight	24g
Product Size	65248mm
Package Size	675312mm

Measurement Range Gain Setting:

Different range resolution is different, the error value of the result is different, please set the appropriate range according to the needs.Do not write EEPROM.If you really want to save the custom calibration values to EEPROM，Using the following statement, the factory data will be lost once written

bool Voltmeter::saveCalibration2EEPROM(voltmeterGain_t gain, int16_t hope, int16_t actual)

//@Parameter: voltmeterGarin_t gain //Set Gain

###########################################

# // | PAG | Max Input Voltage(V) | #

# // | PAG_4096 | 64 | #

# // | PAG_2048 | 32 | #

# // | PAG_512 | 16 | #

# // | PAG_256 | 8 | #

###########################################

//@Parameter: int16_t hope // Set target value

//@Parameter: int16_t actual //ADC raw value

ADC1115_Reference calibration	Calibration voltage(V)	Expected reading(int16)
PGA4096(4.096)	60	7641
PGA512(0.512)	5	5094

Voltage measurement range	Maximum input voltage(V)	Minimum resolution(mV)	Gain factor
4.096	128.6516364	7.852272727	0.125
2.048	64.32581818	3.926136364	0.0625
1.024	32.16290909	1.963068182	0.03125
0.512	16.08145455	0.981534091	0.015625
0.256	8.040727273	0.490798455	0.007813

Datasheet:

CA-IS3020S

ADS1115

PinMap:

M5Core(GROVE A)	SDA(GPIO21)	SCL(GPIO22)	5V	GND
V Meter Unit	SDA	SCL	5V	GND

Example:

1. Arduin IDE

Click here to download the Arduin example

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Shipping Rates

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Shipping Method Shipping Rates Shipping Times
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Standard Express（0.5KG starting price listed）
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