Elecbee Ammeter Unit Current Meter DC-DC Isolated 16-bit ADC ±4A

Ammeter Unit is a current meter that can monitor the current in real time. The 16-bit ADC (analog-to-digital) converter ADS1115 is used internally to communicate through I2C (0X48). 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, with inital Accurancy 0.1%FS, ±1 count, resolution 0.3mA. The unit has a maximum measurement current of ±4A, and an internal integrated 4A fuse to prevent excessive measurement current from burning out the circuit.

±4A range

16-bit ADC conversion

Inital Accurancy 0.1%FS, ±1 count

Resolution 0.3mA

LED power indicator

4A Slow-blow Fuse

Factory calibration (Cal data saved in on-board EEPROM)

Built-in I2C isolator CA-IS3020S

Isolated DC-DC

Up to 1000 VRMS isolation withstand voltage

Development platform: Arduin, UIFlow (under development)

2x LEiGO compatible holes

1x Ammeter Unit

1x Grove Cable(20cm)

galvanometer

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 Ammeter::saveCalibration2EEPROM(ammeterGain_t gain, int16_t hope, int16_t actual)

//@Parameter: ammeterGarin_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

CA-IS3020S

ADS1115

1. Arduin IDE

Click here to download the Arduin example