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Voltmeter Unit (ADS1115)
USD 19.50
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It uses a 16-bit ADC converter ADS1115 and communicates via I2C (0x49). To ensure measurement accuracy, a built-in DC/DC isolated power supply is provided, and the I2C interface is electrically isolated using a low-power isolator CA-IS3020S. This prevents noise and surges from the data bus or other circuits from entering the local ground terminal and interfering with or damaging sensitive circuits. Each Unit VMeter is individually calibrated before leaving the factory, with a maximum measurement voltage of ±36V, an accuracy of 1% of full scale, ±1 digit. Calibration Parameters The EEPROM (0x53) has built-in calibration parameters from the factory. Do not write to the EEPROM, otherwise the calibration data will be overwritten, resulting in inaccurate measurement results. Features ±36V range 16-bit ADC conversion Resolution: 1mV at ≤16V, 7.9mV above 16V Accuracy: 1% of full scale, ±1 digit LED power indicator No recalibration required (EEPROM pre-written at factory) Built-in CA-IS3020S isolation chip for anti-interference Isolated DC-DC Isolation withstand voltage up to 1000 VRMS Development Platforms: Arduino, UiFlow (Blockly, Python) 2 x LEGO compatible holes Includes 1 x Unit VMeter 1 x HY2.0-4P Grove Cable (20cm) 1 x VH3.96-4P Terminal Applications Voltmeter Specifications Specification Parameter Resolution 7.9mV @ 16V reading Measurement Range ±36V Communication Interface I2C Communication @0x49 Product Size 56.0 x 24.0 x 8.0mm Product Weight 8.2g Package Size 138.0 x 93.0 x 9.0mm Gross Weight 16.5g Learn and Documents → DOCUMENTS
