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EVAL-CN0429-EBZ BOM is inconsistent

I'm looking at ordering gas sensors the EVAL-CN0429-EBZ.  The BOM parts list doesn't seem to be consistent with the photos online.  All the photos of the PCB have gold inserts mounted on the board for the gas sensor to allow for easy insertion and removal.  I cannot find these parts listed on the BOM, instead there seems to be two different options;

10 1 E026504 MOD CARBON MONOXIDE SENSOR  110-102 M110-102 N/A N/A N/A M1 SPEC SENSORS  110-102
12 2 E023091 CONN-PCB HDR SIL VERT, 2.0MM PITCH  M22-2010205 CNHDR1X2H207 N/A N/A N/A P2,P3 HARWIN  M22-2010205

I think the BOM is for a SPEC SENSOR 110-102?

Please advise.


  • FormerMember
    0 FormerMember

Hi AFisher,

You are correct, looks like the incorrect files were loaded up.  I will have this fixed hopefully in the next day or two.  But I have attached the correct zip file here for you.

Thanks for bringing this to my attention.


  • FormerMember
    0 FormerMember in reply to FormerMember

    Just following up here, the website has been updated, so you can download the correct files here. 

  • Thank you.  I am looking for the ADuCM3029_demo_cn0428_cn0429.hex file.  I have downloaded a zip file that is password protected from

    I need to program the ADICUP3029 board with the gas sensing application firmware.  Can you please direct me to where I can find this?



  • FormerMember
    0 FormerMember in reply to afisher

    Hi April,

    Thanks again for the ping here.  We are a bit late in getting this code posted to Github because of some software optimization/compliance issues.  

    Here is an attached copy of the file you can use to download onto the ADICUP3029 so that you can get started.  Please note that we will be updating this code and pushing it to Github as soon as the software engineers are done with their checks.  The software will still function the same, but the code should be cleaner and more optimized once posted to Github.


  • Thanks, seems to be working so far.

  • Brandon,

    I seem to be getting random numbers for the sensor reading.  It can be anywhere from -26 to 209ppm.

    I am using a CO sensor 75nA/ppm

    Rload - 10Ohm

    Rtia= 12k, 1000 ppm range

    Vbias = 0V

    Can you explain what startmeas and stopmeas is used for? Neither seem to effect the results. Also when I readrcal the value returned is 121 ohm. This seems way off.  The sensor has been powered on over the weekend so it has had lots of time to settle.  Can you please let me know if I am doing anything wrong or I am missing a step?