PRODUCT 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, initial accuracy of 0.1%FS, ±1 count, and a maximum measurement voltage of ±36V.
 
 
EEPROM (0x53) has built-in calibration parameters when leaving the factory. Please do not write to the EEPROM, otherwise the calibration data will be overwritten and the measurement results will be inaccurate.
 
Product Features
 
 
±36V range
 
LED power indicator
 
16-bit ADC conversion
 
Resolution: Auto range, Count ≤ 16V, 1mV; Count > 16V, 7.9mV
 
Inital accuracy 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: Arduino, UIFlow (under development)
 
2x LEGO compatible holes
 
 
Includes
 
 
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
 
 
 
Communication protocol
 
I2C：0x49
 
 
 
Net Weight
 
9g
 
 
 
Gross Weight
 
24g
 
 
 
Product Size
 
65*24*8mm
 
 
 
Package Size
 
67*53*12mm
 
 
 
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