FDC1004EVM-arduino

[harikrishnasv1988]

Hello All,

I am new to Arduino (2 days old!). I started using the protocentral FDC1004EVM breakout trying to execute
https://www.hackster.io/team-protocentral/non-contact-capacitive-liquid-level-sensing-using-fdc1004-9333c7
and using codes

https://github.com/Protocentral/ProtoCentral_fdc1004_breakout

I am stuck with the the serial monitor showing 0.00pF always and shows no readings even if i bring my hand close to the chip.
I require urgent help. Kindly give in your valuable suggestions.

1. read capacitance values
2. read mullti-channel simultaneously. (2 sensor at least)
3. able to plot or acquire data in real-time

[harikrishnasv1988]

Hello All,

I am new to Arduino (2 days old!). I started using the protocentral FDC1004EVM breakout trying to execute
https://www.hackster.io/team-protocentral/non-contact-capacitive-liquid-level-sensing-using-fdc1004-9333c7
and using codes

https://github.com/Protocentral/ProtoCentral_fdc1004_breakout

I am stuck with the the serial monitor showing 0.00pF always and shows no readings even if i bring my hand close to the chip.
I require urgent help. Kindly give in your valuable suggestions.

1. read capacitance values
2. read mullti-channel simultaneously. (2 sensor at least)
3. able to plot or acquire data in real-time

I tried several tims and I am unable to communicate with the FDC104EVm. I noticed even after removing the chip, the Arduino is still showing "0 pf". Can someone suggest an urgent solution? I am stuck with my project.

[beshaya]

I'm guessing you have a hardware problem. Some things to check:

• Are you using a 5v arduino or a 3.3V Arduino? The FDC1004 is a 3.3v chip and 5v will destroy it.
• Have you verified your wiring? Power, ground, SCL, SDA? Pull-up resistors on SCL and SDA?

[harikrishnasv1988]

Hello Beshaya, Thanks for the response. I used 3.3V terminal on the arduino.

3.3 to vcc
Gnd to gnd
SCl to A5
SDA to A4

As per the descriptions on protocentral cite. I also tried with and without some 10 k resistors between SCL/SDA and A5/A4.
Sorry, I am new to arduino (I got this only 2 days back) and am stuck with this.

Please advise.

[beshaya]

Is the Arduino itself 3.3V? (for instance, most Unos are not). If not, the chip may not be able to communicate with the Arduino's 5V logic.

[harikrishnasv1988]

Thabks for the fast response.

Oh, I see. I had no idea about this. Yes your are right it's 5V I just checked . Is there anywya to make it 3.3V as you said? I also searched online and see that arduino Due is 3.3V.

Any suggestion?

[beshaya]

I don't think there's an easy way to change it to 3.3V. I usually used arduino pro mini's, which are available in 3.3V. Note that they will have a different pinout. I haven't worked with this code / chip in over 5 years, so I'm afraid there's not much more help I can offer.

…

On Fri, Nov 13, 2020 at 6:36 PM harikrishnasv1988 ***@***.***> wrote: Thabks for the fast response. Oh, I see. I had no idea about this. Yes your are right it's 5V I just checked . Is there anywya to make it 3.3V as you said? I also searched online and see that arduino Due is 3.3V. Any suggestion? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#8 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABM25LNI3S3IAL27OQT22J3SPXULJANCNFSM4TTFD2HA> .

[harikrishnasv1988]

Thanks Benjamin. Appreciate your responses. I will try to see if it's possible using Pro mini. On 14 Nov 2020 11:13 AM, Benjamin Shaya <notifications@github.com> wrote: I don't think there's an easy way to change it to 3.3V. I usually used arduino pro mini's, which are available in 3.3V. Note that they will have a different pinout. I haven't worked with this code / chip in over 5 years, so I'm afraid there's not much more help I can offer.

On Fri, Nov 13, 2020 at 6:36 PM harikrishnasv1988 ***@***.***> wrote: Thabks for the fast response. Oh, I see. I had no idea about this. Yes your are right it's 5V I just checked . Is there anywya to make it 3.3V as you said? I also searched online and see that arduino Due is 3.3V. Any suggestion? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#8 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABM25LNI3S3IAL27OQT22J3SPXULJANCNFSM4TTFD2HA> .

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#8 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ARXJDIVY2ZTOXK3UVCJN5O3SPXYWJANCNFSM4TTFD2HA>. This e-mail and any attachments are only for the use of the intended recipient and may contain material that is confidential, privileged and/or protected by the Official Secrets Act. If you are not the intended recipient, please delete it or notify the sender immediately. Please do not copy or use it for any purpose or disclose the contents to any other person.

[Voligny]

Hi, I am having the same problem; serial monitor only reads 0 pF. I am pretty sure my connections between electrodes and FDC1004 are ok. I am using the arduino uno, is that the problem? Should I be using arduino pro mini?