JColvin

Administrators
  • Content Count

    2822
  • Joined

  • Last visited

  • Days Won

    79

JColvin last won the day on February 13

JColvin had the most liked content!

About JColvin

  • Rank
    Forum Moderator
  • Birthday April 22

Profile Information

  • Gender
    Male
  • Location
    Pullman, WA

Recent Profile Visitors

8703 profile views
  1. Hi @Fez1234, I have moved your thread to a different section of the Forum since Digilent does not have any Lattice based FPGA boards, so we will not be able to provide specific help to you on this; as noted on this thread, our boards use Xilinx FPGAs. Otherwise, if you are starting out I would recommend taking a look at fpga4fun and asic-world as some good resources for getting started with FPGAs and the associated HDL such as Verilog. Thanks, JColvin
  2. JColvin

    Different data from WaveForms and from LabVIEW

    Hi @Dejdys, The noise band in WaveForms is actually the semi-transparent darker yellow band that you see in the background (more details on this thread). As for why the signals are different, my guess is that the sample rates between the two software are different so different data is being collected. What sample rates are you using for each setup (WaveForms and LabVIEW)? Thanks, JColvin
  3. Hi @sgrobler, I have asked another engineer more familiar with WaveFormsLive to see if there is some limitation on that end regarding this. You are correct though that the resolution achievable with the embedded ADC (taking into account the front end gain of 0.1392) is 329 uV per LSB. Thanks, JColvin
  4. Hi @dougBe38, Could you attach the code that you are using to read the Pmod TC1? Additionally, are you using any sort of voltage translator while working with the Pmod TC1? The embedded chip on the Pmod TC1 only accepts voltages from 3V to 3.6V and from my understanding the Arduino MEGA only uses 5V logic, so that would change the operating specifications. Thank you, JColvin
  5. JColvin

    DMC60 Causing Power Supply Fault

    Hi @opethmc, I heard back from the other engineer. They let me know that the following: Let me know if you have any questions. Thanks, JColvin
  6. JColvin

    Confusion regarding Xilinx cable drivers

    Hi @aeon20, To add on to what @jpeyron said, the cable drivers are effectively (as per page 11 in this document you linked) proprietary device drivers that allow the design software (i.e. Vivado Hardware Manager or Xilinx ISE iMPACT) to communicate with a Xilinx USB cable. Digilent boards do not use a Xilinx USB cable (such as a Platform Cable II) directly, but has the equivalent circuitry on the board that also need these device drivers. The Digilent Runtime and Utilities are part of Adept (available for download on the right hand side of the Adept 2 Resource Center and listed as "Runtime" and "Utilities", respectively) and from my understanding help facilitate the Xilinx software communicate with Digilent boards. Thank you, JColvin
  7. JColvin

    Zybo Z7 Development Board ESD&Safety

    Hi @Sduru, We do not have any formal documentation regarding the ESD & Safety protections for the Zybo Z7 boards. In the end the best practice would be to use appropriate protection with grounding mats and wrist bands to ensure no unitentional shock is delivered to the board. The board does have over-voltage protection up to 20V on the power inputs as well as Pmod JE which has series protection resistors, but there is no specific circuitry to protect the board from stray ESD. On anecdotal note, we have touched actively operating boards without experiencing any detriment to performance or otherwise, but if you know that you will be working in an environment where ESD will be an issue, I would recommend erring on the side of caution. Let me know if you have any other questions. Thank you, JColvin
  8. Hi @Cherrih, Unfortunately, we do not have any experience using the Xilinx System Generator so we do not have any board files for it; I would suggest to reach out to Xilinx support here. Thank you, JColvin
  9. JColvin

    DMC60 Causing Power Supply Fault

    Hi @opethmc, I have asked another engineer about this and am waiting to hear back from them. Thank you for your patience, JColvin
  10. JColvin

    Arty A7 -35T gets hot, even when unprogrammed

    Hi @Deskarano, The only other thing that Jon and I can reasonably think of to try (to see if we can get different results to hopefully point to a root cause) would be to load the program (such as the button and switch project from earlier in the thread) onto the flash memory (a guide for the Arty is available here) and then power the board with an external power supply and see if the FPGA is still hot to the touch (since viewing it in Vivado will end up using the cable and USB connection again). If you happen to have a JTAG HS2 or something similar we can try that as well (since we can also view the temperature profile that way), but it's fine if you do not have that. Thank you, JColvin
  11. JColvin

    Web.Config file

    Hello @lahane123, Unfortunately, those of here on the Digilent forum do not have the experience with ASP.NET so we will not be able to answer your questions. I would recommend asking your questions on a forum more suited for these types of questions such as stackoverflow. Thank you, JColvin
  12. JColvin

    please help me

    Hi @Asmaa_as, Yes, you can post back on this thread if you have a question. Please note though that the toolkit that Jon linked to (I believe) and LabForms here is only working with LabVIEW 2014 through 2016. I've personally only tested and confirmed that it works correctly with LabVIEW 2014 though. Thanks, JColvin
  13. JColvin

    OpenScope MZ

    Hi @arlene703, Could you attach a picture of your physical setup? The only thing I was able to find that closely replicated your setup was that the WaveForm generator (yellow wire) was connected to Oscilloscope channel 2 (the blue wire) rather than Oscilloscope channel 1 (orange wire). Let me know if you have any more questions. Thanks, JColvin
  14. JColvin

    Arty A7 -35T gets hot, even when unprogrammed

    Hi @Deskarano, Thank you for the information; the voltage all look pretty good to me as well aside from the 5V. How are you powering your board? If you are powering it via USB (direct to PC or USB hub?), could you test that voltage? You can access it by measuring between the underside of J13 (the regulator vs USB power jumper) and J11 (an unloaded single pin next to the Ethernet port); this value should be pretty close to 5V (mine is 4.98V). Also, did you get the opportunity to try a different USB cable or computer (to see if that affects power delivery)? Thanks, JColvin
  15. JColvin

    DMC60 Causing Power Supply Fault

    Hi @opethmc, Can you attach a picture of the setup that you are using so that we can better understand your configuration? I presume also that you are keeping PWM pulse width within the parameters described in this section of the Reference Manual here? Thank you, JColvin