Problem for finding complete working code and connection of AD5934 IC with Arduino uno

Anugaya97 said:

I have tried in all possible ways

What is the state of your project at this point besides its urgency? Do you have your Uno board connected to your PC? If so, can you load and execute any (AD5934 unrelated) demo sketch with it? If so, can you hook up your AD5934 chip (pinout is identical to the AD5933 shown) to your Uno according to the diagram:

?

If you have done that, can you Copy/Paste the code form Antonius's AD5934-Arduino-Driver link into your environment, compile and execute it? If not, what would be the holdup?

Like this i have connected...

This is AD5934 IC according to datasheet i have connected 

Please do suggest me 

From your diagram and the picture it is not clear if you connected all supply pins to Vdd and all ground pins to GND, as recommended in the datasheet, p.8, Fig. 3:

NOTES:
1. IT IS RECOMMENDED TO TIE ALL SUPPLY CONNECTIONS (PIN 9, PIN 10, AND PIN 11)
AND RUN FROM A SINGLE SUPPLY
2. IT IS ALSO RECOMMENDED TO CONNECT ALL GROUND SIGNALS TOGETHER (PIN 12, PIN 13, AND PIN 14)

Please check if all the pins mentioned connected accordingly.

Anugaya97 said:

i just complied it

So it sounds like the driver code from Antonius's post does compile without any errors. If you use a conventional Arduino environment you can print the valuers collected from the chip over serial port by adding to the code something like:

1. Somewhere around line 179 -
Serial.begin(9600);


2. Somewhere around line 199 - 
Serial.print(results.freq[cnt]);
Serial.print(", ");
Serial.print(results.realImp[cnt]);
Serial.print(", ");
Serial.println(results.imagImp[cnt]);

Then upload your sketch and click Tools > Serial Monitor. 

BIM_AD5933-20220503T072902Z-001.zipHi,

I have complied this code .....i am getting results from this....

my big issue is when i place the resistor over RFB,VIN and VIN ,VOUT ..it is not showing the calibration and impedance measurement of this ...

Good progress, at least you found the code that works with your chip. The code seems to be measuring and printing the data from the registers. I would suggest you pull this data into Excel and perform all calculations for calibration and measurements of the unknown impedance there before modifying the code.

If this sounds agreeable, can you connect some Rfb between RFB and VOUT pins, run the code and post the results here in some text format? Then connect some calibration resistor Rcal ≈ Rfb, run the code and post the results? Then connect some "unknown" resistor Rx ≥ Rcal and post the results? I can show you how to perform calibration and measurements with this data set.

BTW what is the clock source MCLK for your AD5934?

Hi,

The clock source MCLK for AD5934 is 16.776MHZ

Hi,

How to pull the data into excel sheet for calculating calibration and unknown impedance ??

Yes, but where does this clock signal come from? You schematic and picture do not show any oscillators from which this MCLK signal is supposed to come from. Without the oscillator the chip is not going to function. See, for example, CN-0349, Fig. 1 - U6 is the source of MCLK.

Yes, but where does this clock signal come from? You schematic and picture do not show any oscillators from which this MCLK signal is supposed to come from. Without the oscillator the chip is not going to function. See, for example, CN-0349, Fig. 1 - U6 is the source of MCLK.