Search:

Type: Posts; User: baileychic

Page 1 of 20 1 2 3 4

Search: Search took 0.02 seconds.

  1. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    What are the other better ways?
  2. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    I have one more issue.

    I have a parameter named Accuracy for weight. It has three options 1, 2 and 5.

    How to implement these?



    1. If set the Acc = 1, then machine will increase like...
  3. Closed: Re: Proteus Error, No Source Line at PC Address

    You can see a drop down box in the screenshot that you have posted. In that select the .c file that is the main source file and debug.
  4. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    No. Only auto-calibration which is done at factory or field by enabling a jumper.
  5. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    Yes, I found out that myself.

    I found out the auto-calibration procedure myself. Will post it here after project completes.

    Currently, I am using the max capacity of the Load Cell as the...
  6. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    I have a new question.

    Client needs auto-calibration of Load Cell feature. HX711 will be used.

    So, how to get these values automatically?



    #define HX711_Full_Scale_Value 40.0 //Channel...
  7. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    @FvM, Klaus and other experts,

    Of these two codes which one is correct?

    Code - 1



    #define Adc_Resolution 16777216.0
  8. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    The factor of 1.16279 is only for my Proteus setup of AVDD 4.3V. For hardware, I will change it based upon the HX711 module's AVDD.

    Here it shows ratiometric operation.
    ...
  9. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    Then what is the equation?

    How should I convert my 25.8 Kgs (6.45 Kgs * 4) obtained with AVDD 4.3V and Load Cell of Bridge resistance 1000 Ohms and Sensitivity 2mV/V?

    - - - Updated - - -

    I...
  10. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    I made a major mistake in the code.

    The below line results in weight value always 30.0 Kgs.



    weighingScale.weight = weighingScale.weight * ((double)weighingScale.capacityInKgs /...
  11. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    ADC of HX711 is 24 bit and so it is



    #define Adc_Resolution 16777216.0


    For 8.6mV (AVDD = 4.3V) I am getting not 6.4 Kgs but (6.45 Kgs) with Load Cell load = 100%, Capacity = 30.0 Kgs,...
  12. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    I am getting 6.4 as the weight value for 10mV.

    - - - Updated - - -

    I am getting 6.4 as the weight value for 10mV (edited, sorry for 8.6mV because now AVDD is 4.3V, instead of 5V which gives...
  13. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    @Klaus

    Leave the filter for now. I will discuss it later after a few days when building the final hardware where the HX711 circuit will be put on the mainboard.

    For now, I am testing in Proteus...
  14. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    Okay, I am using HX711 module? Where should I put the filter? On HX711's power pins? I know that HX711 has an internal 24-bit ADC. If I have to put the filter for ADC then how, because ADC connects...
  15. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    Why should I use a filter on INA+ and INA- pins of HX711 module? I am using SparkFun's HX711 module and not HX711 circuit built on the mainboard. The filter will attenuate the signal level. How...
  16. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    @FvM and @Klaus

    Okay, done.

    I connected AVDD pin of HX711 to E+ of Load Cell. Power supply is fine and clean and low noise.

    @Klaus

    Where to put analog filters?
  17. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    @FvM

    This is my circuit. See the voltmeters in the HX711 circuit. Should I connect AVDD pin to E+ pin of Load Cell?

    This is my almost finished projects test files (not c code as client doesn't...
  18. Closed: Re: ADC_Init not working in mikroc pro for AVR using Atmega8.

    What kind of statements are these?



    DDRB=(0<220)&&(ADC_Old<=300)){




    DDRB=(0<0)&&(ADC_Old<=200)){
  19. Replies
    31
    Views
    1,388

    Closed: Re: HX711 mV/V information needed

    My Load Cell Capacity is 30 Kgs and Bridge resistances are 1000 Ohms +/-20 and sensitivity is 2mV/V.
    My Load Cell Excitation voltage is 5V clean DC.

    I am using HX711 with 25 Clocks.

    2mV * 5V =...
  20. Closed: Re: Unable to read data from RTC DS1307 using Atmega8 and mikroc.

    I don't see the code of TransformTime() function. TransformTime() is needed to convert the RTC data to readable form. libstock.com has the mikroE example code for the DS1307.
  21. Replies
    31
    Views
    1,388

    Closed: HX711 mV/V information needed

    I am making a HX711 based Weighing Scale using PIC16F877A.

    The datasheet

    https://cdn.sparkfun.com/datasheets/Sensors/ForceFlex/hx711_english.pdf

    mentions that for input channel A that is A+...
  22. Replies
    1
    Views
    260

    Closed: How to design the amplifier circuit?

    How to design the amplifier circuit?

    I have to use INA126 and design an amplifier and for the final output I will use a UG buffer amplifier.

    Client's data are these:

    I have to apply 5 na...
  23. Replies
    35
    Views
    1,458

    Closed: Re: High Frequency using 8051

    In scope, channels should be set to DC measurement. In your setup, all channels are set to measure AC.
  24. Closed: Re: SMPS selection for Big 6-Digit 7-SEGMENTS display as driver

    It is multiplexed and so only one digit will be ON at a time and so the current draw at any instance is max 440mA.

    You should not run LEDs at max ratings. If LED current is max 60mA then it is...
  25. Closed: Re: Invasive blood pressure monitoring. How to?

    Just an update for the thread. Adding a simulation screenshot showing the signals on the graph.



    I tried again but when I save .png file as .jpg file the file size inclreased from 834 KB to 3.x...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4