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Ads1293 with raspberry

Vinsensia Elzanora Simbolon
Prodigy 50 points
Other Parts Discussed in Thread: ADS1293

hello, I am a newbie in ECG research. I'm working on Research on ECG signal using ADS1293 dn raspberry pi 4, python oemogram. However, I faced a problem, namely when the SPI program was run it turned out that there was no output in the form of voltage values ​​in lead 1 and lead 2 and there was no graphic data on the plotter. Can anyone help me provide a solution? when I first tried to connect ads1293 to the raspberry and run the program, the voltage value was still reading and the graph didn't appear.

  • 0
    TI__Mastermind 19815 points

    Hi,

    Highly appreciate for using TI's products.

    This ticket has been received/viewed, and I will get back to you between 3~5 days.

    May I ask some more questions to collect more detail info?

    Can you provide some pictures showing how you connect the ADS1293 to raspberry pi's I/Os?

    You will need sufficient VDD voltage = 2.7V ~5.5V, IVDD current, VDDIO voltage between 1.65V ~ VDD, etc and 4.096MHz crystal/XTAL clock to provide to XTAL pins to create clock signal. Please check raspberry pi can supply/support above or not?

    Did you buy any Eval board/kit?

    Have you verified and tested the python script for Raspberry pi works probably on some other devices?

    Appreciate.

  • 0 in reply to ChienChun Yang
    Prodigy 50 points 
    Thanks in advance for your feedback.
    this is a picture of the ads1293 and raspberry pin connection that I made.
    I'm here connecting
    the ads1293 pin to the raspberry pi 4 pin as follows:
    5V--> pin 17
    GND --> pin 25
    SCLK --> pin 23
    SDI --> pin 19 (MOSI)
    SDO --> pin 21 (MISO)
    CSB --> pin 24 (CE0)
    DRDYB --> pin 22

    In this case I'm still not sure if the GND and 5V on my ads1293 are connecting directly to the raspberry or using a different power source?
    as well as the CSB and DRDYB pins I'm not sure which GPIO pin on the raspberry should I connect to.

    I didn't buy an Evaluation board/kit

    I don't understand what it means to test a python script on another device as it would be but I got it from the following website link shared by Stefan Hubber:
    gitlab.stusta.de/.../rpi-ads1293-spi.py

    When I run the program it doesn't seem to show any particular error.
    it's just that I don't understand how to connect the pins properly and correctly and how the process flows.

    Sorry if I still ask a lot and thank you for the help sir

  • 0 in reply to Vinsensia Elzanora Simbolon
    TI__Mastermind 19815 points

    This ticket has been received/viewed, and I will get back to you.

    Appreciate