Unit VMeter

SKU:U087

Description

Unit VMeter is a voltage sensor that can monitor voltage in real-time. It uses a 16-bit ADC analog-to-digital converter ADS1115 internally and communicates via I2C (0X49). To ensure measurement accuracy, it has a built-in DC/DC isolated power supply, and the I2C interface is electrically isolated through the low-power isolator CA-IS3020S, preventing noise and surges from the data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuits. Each Unit VMeter is individually calibrated before leaving the factory, with a maximum measurement voltage of ±36V and an accuracy of 1% of full scale, ±1 digit.

Note

Features

• ±36V range
• 16-bit ADC conversion
• Resolution: 1mV for voltages below 16V (inclusive), 7.9mV for voltages above 16V
• Accuracy: 1% of full scale, ±1 digit
• LED power indicator
• No need for recalibration (EEPROM pre-programmed at factory)
• Built-in CA-IS3020S isolation chip for noise immunity
• Isolated DC-DC
• Up to 1000 VRMS isolation voltage
• Development platforms: Arduino, UIFlow (Blockly, Python)
• 2 x LEGO-compatible holes

Includes

• 1 x Unit VMeter
• 1 x HY2.0-4P Grove cable (20cm)

Applications

• Voltmeter

Specifications

Schematics

PinMap

Unit VMeter

Model Size

Datasheets

• CA-IS3020S
• ADS1115

Softwares

Arduino

• Unit VMeter with M5Core
• Unit VMeter with M5Core2
• Unit VMeter with M5Atom
• Unit VMeter with M5StickC

UiFlow1

• Unit VMeter UiFlow1 Example

EasyLoader

Video