loading
ATmega328p Board with NRF24l01+ Socket LTC4079 Battery Charger

    ATmega328p Board with NRF24l01+ Socket LTC4079 Battery Charger

    RM 87.00

    Please select option below

    X

    Quantity
    - +
    1 left
    Delivery From Butterworth / Penang
    Estimated Arrival : 1-3 working days.
    First 0.50KG : RM 8.00 
    Shipping Fee
    RM 8 by courier to Peninsular Malaysia
    RM 15 by courier to Sabah, Labuan
    RM 15 by courier to Sarawak
    Ship To : Within Malaysia
    ADD TO CART
    BUY NOW
    Add to wishlist
    Since 20 Apr 2015
    We accept
    and more
    Buyer Protection
    with NetPay
    Full Refund if you don't receive your order*
    Popular Products
    Product ID : 192139552
    Model / SKU : 1001611
    Conditions : New


    ATmega328p Board with NRF24l01+ Socket LTC4079 Battery Charger

    ATmega328p Board with NRF24l01+ Socket LTC4079 Battery Charger


    ATmega328p Board with NRF24l01+ Socket LTC4079 Battery Charger

    Charger IC has a complete constant current, constant voltage algorithm. It is a low quiescent current, high voltage linear charger for most battery chemistry types including Li-Ion/Polymer, Lead-Acid or NiMH battery stacks up to 60V. The maximum charge current is 100mA, set with a resistor. The battery charge voltage is set using a resistor divider. If no special instructions are made, the charge voltage is set to 4.2V.

    Quiescent current while charging is 4µA

    Ultralow battery drain when charged IBAT < 0.01µA

    The LTC4079 charges the backup battery while greatly extends battery life. It let’s you monitor voltages and charging current. The power source is a small, 5V - 20V solar cell. Connections:

    Analog input A7 on ATmega328 is /CHRG signal from LTC4079

    Analog input A0 on ATmega328 is battery voltage

    Analog input A2 is solar cell voltage

    Analog input A6 is charge current

    The 1Mohm trimmer potentiometer is used to determine the MPPT (multi point power tracking) point of the solar cell - to maximize its power. At shipping it is set to around 500kOhm, which sets the MPPT voltage of the solar cell to around 11V. Range is from 5V to 18V.

    Description: rimmer pot

    Setting the trimmer

    Description: rimmer pot

    Voltmeters on both battery and solar cell connections are connected to analog inputs A0 and A2 on the ATmega328p. The voltage divider resistors on battery pins are equal, so the measured voltage is double the shown voltage. And the voltage divider resistors on solar cell pins are 47k over 10k. Take a look at the code example for measurement equation.

    Other features on the board

    NRF24l01+ radio socket with CE and CSN pins connected to digital pins 7 and 8 ( you use RF24 radio(7, 8); in Arduino code). There is a 4.7uF capacitor connected across Vin and GND of the port NRF24

    Description: RF24 socket

    High efficiency buck-boost DC-DC regulator

    Power supply comes from a TPS63031, a 3.3V DC-DC buck-boost converter. It has low power consumption, while delivering at least 500mA in boost mode. Its efficiency is over 90% (at 10mA output, Vbat = 3.6V). Converter works with battery voltages which are below (min 1.8V), equal or higher than the output 3.3V voltage. It also has a power save mode for light loads.

    A socket with SDA and SCL lines and 10k pull-up resistors for external I2C components, connected to A4 and A5

    Description: 2c

    3amp 30V n-channel MOSFET for regulating external components such as solenoids. The gate is connected to D3 and the output is protected with a Schottky diode.

    Low power (2mA) LED diodesthat are connected via solder jumpers. Jumpers need to be soldered in. There are few such boards available and none with this kind of versatility. Fully compatible with Arduino PRO Mini 3.3V @ 8MHz bootlader.

    Code example

    float readVcc()

    {

    signed long resultVcc;

    float resultVccFloat;

    // Read 1.1V reference against AVcc

    ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);

    delay(10); // Wait for Vref to settle

    ADCSRA |= _BV(ADSC); // Convert

    while (bit_is_set(ADCSRA,ADSC));

    resultVcc = ADCL;

    resultVcc |= ADCH<<8;

    resultVcc = 1126400L / resultVcc; // Back-calculate AVcc in mV

    resultVccFloat = (float) resultVcc / 1000.0; // Convert to Float

    return resultVccFloat;

    }

    int current = A6;

    int cell = A2;

    int lipo = A0;

    int CHRG = A7;

    float vout = 0.0;

    float vin = 0.0;

    float R1 = 47000.0; // resistance of R1

    float R2 = 10000.0; // resistance of R2

    int value = 0;

    void setup()

    {

    Serial.begin(9600);

    }

    void loop()

    {

    float napetost = readVcc();

    value = analogRead(cell);

    vout = (value * napetost) / 1024.0;

    vin = vout / (R2/(R1+R2));

    if (vin<0.09)

    {

    vin=0.0;

    }

    float tok = ((analogRead(current) * napetost / 1024 ) *250) / 3.3; // convert the ADC value to miliamps

    float baterija = ( analogRead(lipo) * napetost / 1024 ) * 2; // measuring battery voltage

    int polnjenje = analogRead(CHRG);

    Serial.print("Vcc = ");

    Serial.print(napetost);

    Serial.println("V");

    delay(400);

    Serial.print("Charge current = ");

    Serial.print(tok);

    Serial.println("mA");

    delay(400);

    Serial.print("Solar cell voltage = ");

    Serial.print(vin);

    Serial.println("V");

    delay(400);

    Serial.print("Battery voltage = ");

    Serial.print(baterija);

    Serial.println("V");

    delay(400);

    Serial.print("CHRG = ");

    Serial.println(polnjenje);

    Serial.println("----------------------------");

    delay(2000);

    }

    /*

    Improving accuracy:

    To do so, simply measure your Vcc with a voltmeter and with our readVcc() function. Then, replace the constant 1107035L with a new constant:

    scale_constant = internal1.1Ref * 1024 * 1000

    where

    internal1.1Ref = 1,1 * Vcc1 (per voltmeter) / Vcc2 (per readVcc() function)

    Example:

    For instance, I measure 3,43V from my FTDI, the calculated value of Vref is 1,081V.

    So (1,081 x 1000 x 1024) = 1107034,95 or 1107035L rounded up.

    Use smoothing example from IDE to smooth the data from ADC.

    */

    PURCHASE AND PAYMENT

    · If you need the item urgently, please pay using Netpay

    · Payment directly to our Maybank account or Public Bank account will have to wait until payment is cleared

    · We provide combine shipping for most of the item so you can save shipping cost

    · Payment must be made within 24 hours. Order not paid within 24 hours will be cancelled automatically

    · Please inform about your payment to us immediately to avoid cancelation of order via SMS / WhatApps / Email

    SHIPPING AND TRACKING

    · Please take note that we only process the order once the money is transfer successfully and amount reflected in our account

    · Payment receipt only act as indication that payment has been made

    · Item will be dispatched within 2-3 working day once payment is cleared

    · Order made on Sat or Sun will be sent on next working day once payment is cleared

    · Order made on public holiday will be sent on next working day once payment is cleared

    · Item normally dispatched from 9:00AM to 9:30AM everyday but not guaranteed

    · Item send by Pos Laju with tracking number. Customer will be advised if item send by other means. Please take note that Pos Laju takes some time to update their system with the tracking number

    · Invoice will be provided via email upon request

    OFFICAL RECEIPT

    · You can download a receipt from order page. This is a default receipt provided by Lelong

    · If you require official receipt from us, please leave your request when placing the order

    · We require a minimum of 5 working days to prepare the receipt

    · Official receipt will be sent to your email address. We will not provide a hard copy

    COD (CASH ON DELIVERY)

    · COD in Butterworth area Pulau Pinang, preferably at KFC/Pizza Hut Sungai Dua

    · Mon – Fri (6:00PM – 7:00PM / 9:30PM – 10:30PM)

    · Sat/Sun (10:00AM – 12:00PM / 9:30PM – 10:30PM)

    · Please SMS / WhatApps for meeting location & time

    WARRANTY & RETURN POLICY

    · 7 days warranty from the date of purchase

    · Goods sold are non-refundable, we will replace instead

    · Faulty item need to be returned to us for replacement within 7 days of receiving

    · Item return must not shown symptom of abuse or modification from its original state

    · Customer will bear the return shipping cost

    · In any case of refund, the amount will exclude the original shipping cost

    · No refund for item purchased and cannot be used due to configuration issues, etc. If you are not sure, please contact us before commit to purchase

    · Replacement item will be sent once we received the faulty item

    BUSINESS HOURS

    · Our store is open 24x7

    · Store closed will be announced via our announcement board

    · Item order on Sat/Sun/Holiday will be processed the next working day

    · Questions or queries will be dealt within the same day/next day

    · For faster respond, please SMS/ Whatsapp

    ABOUT US

    · Questions or queries, please PM or email to us at ubitronix.inc@gmail.com

    · SMS / Whatapps to 012 4288 534 (No call please)




    Buy with confidence
    We have 217 Good Ratings from buyers View More Rating >
    Buyer
    Item ID
    Date
    Ratings
    ni****
    191662018
    8/30/2019 5:55:00 PM
    Very nice packaging!
    am****
    190212446
    7/13/2019 9:36:00 PM
    fast delivery excellent customer services
    fa****
    178150789
    4/19/2019 7:09:00 AM
    -
    da****
    178164753
    12/23/2018 9:14:00 AM
    -
    bo****
    178160594
    11/7/2018 9:15:00 AM
    late delivery, no reply at all. bad experience from this seller
    ga****
    178286604
    10/14/2018 9:21:00 PM
    Thank you. Received items.
    ga****
    177577959
    10/14/2018 9:21:00 PM
    Thank you. Received items.
    ga****
    200323453
    10/14/2018 9:21:00 PM
    Thank you. Received items.

    We ship by Pos Laju. Same day if payment made by 1PM.

    Average Product Rating

    0.0 stars out of 5
    5 star
    0
    4 star
    0
    3 star
    0
    2 star
    0
    1 star
    0
    Share your thoughts with others
    Write a review
    Only buyers who purchased the product may leave a review

    Frequently Bought Together

    Customers Who Bought This Item Also Bought

    Related Products

    ubitronix Highlights

    Recently Viewed Items

    ubitronix' Best Seller

    Promotion Items

    ubitronix' Recently Sold

    ubitronix' Items



    You may also be interested in Tag:
    * * soket



    Seller & Buyer Communication
    We provide a transparency communication between buyer & seller in a secure platform.
    Save Money & Time
    We give an access to everything buyer need at competitive prices.
    Secured & Protected
    All the information & transaction are secure with our Netpay system.
    MOBILE APPS
    app store
    google play
    RECEIVE NEWS & SPECIAL OFFERS TODAY
    Subscribe
    WE ACCEPT THE FOLLOWING PAYMENT METHODS
    netpay maybank publicbank cimb hongleong
    STAY CONNECTED
    Copyright © 2019 Interbase Resources Sdn. Bhd. (465435-U).
    All product names are trademarks of their respective companies.
    Lelong.my is not affiliated with or endorsed by any company listed on this site.