M5Stack Ammeter Unit Current Meter DC-DC Isolated 16-bit ADC 4A

$33.99
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    Before we can ship your order, we prepare your products, do strict quality-control tests and carefully package the items. The time it takes to prepare your items for shipping is separate from the delivery time. It usually takes 1-3 business days to ship out .

    Shipping Methods

    You can choose the preferred shipping method on the cart page during the checkout process. We offers 3 international shipping methods:

    1. Airmail – Free untracked economy shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
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    3. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

    Delivery Time

    Airmail and Airmail Registered Area Estimated Delivery Time
    United States, Canada 7-25 business days
    Australia, New Zealand, Singapore, United Arab Emirates 10-25 business days
    United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland 10-25 business days
    Italy, Brazil, Russia, South Africa 10-45 business days
    Other countries 10-35 business days
    Expedited Shipping 3-10 business days to Worldwide

    Note: If you choose an expedited shipping, please remember to leave a valid contact number, this is required for expedited shipping’s courier delivery.

  •  Returns & Refund

    Last updated October 05, 2022

    Returns

    If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

    Return Process

    To return an item, please email our customer service at sales@alexnld.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging, and mail your return to the following address:

    Alex NLD
    Attn: Returns
    RMA #
    HaGiborim St 8
    Tiberias, 14388
    Israel

    Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

    All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.

    Refunds

    After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

    Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.

    Exceptions

    If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

    Please provide us with following:

    1. Photos of the front and back sides of the packaging box;
    2. A photo, video or screenshot of the defective item or the defective part of the parcel.

    Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

    Warranty & Repair service

    If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team  and the problem is acknowledged, you can send the items back to us for a repair.

    Note:  Please be aware, we do not cover the cost of the returns fees in  warranty & repair service.

    Order Cancellation

    If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.

    Questions

    If you have any questions concerning our return policy, please contact us at:

    +972 054-536-2888
    sales@alexnld.com

     


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Description:

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.

Features:

±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

Package Included:

1x Ammeter Unit
1x Grove Cable(20cm)

Application:

galvanometer

Specification:

Resources Parameter
Withstand voltage 1000V
Measuring range ±4A
Protocol I2C
Net Weight 9g
Gross Weight 24g
Product Size 65*24*8mm
Package Size 67*53*12mm

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 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

ADC1115_Reference calibration Calibration current(A) Expected reading(int16)
PGA512(O.512) 2 6400

Current measurement range Maximum input current(A) Power Disspation(W) Minimum resolution(mA) Gain factor
4.096 40.96 83.88608 2.5 0.125
2.048 20.48 20.97152 1.25 0.0625
1.024 10.24 5.24288 0.625 0.03125
0.512 5.12 1.31072 0.3125 0.015625
0.256 2.56 0.32768 0.15626 0.007813

Datasheet:


PinMap:

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

Example:

1. Arduin IDE

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