# Support **URL:** https://discuss.pynq.io/c/support/30.md [Latest](https://discuss.pynq.io/latest.md) · [Categories](https://discuss.pynq.io/categories.md) --- ## [How to use Kria-PYNQ from the command line?](https://discuss.pynq.io/t/how-to-use-kria-pynq-from-the-command-line/3723)
**Author:** [@falcon8857](https://discuss.pynq.io/u/falcon8857)\ **Replies:** 3\ **Last updated:** [July 29, 2022, 8:27am UTC](https://discuss.pynq.io/t/how-to-use-kria-pynq-from-the-command-line/3723 "2022-07-29T08:27:06Z")
Hi, I recently installed Kria-PYNQ on my KV260, and it works fine from JupyterLab. But, I sometimes want to use PYNQ applications from the command line. When I was using PYNQ v2.6 on ZCU104, there were no problems in us… --- ## [Read Me: How to ask a question on the forum, and FAQs](https://discuss.pynq.io/t/read-me-how-to-ask-a-question-on-the-forum-and-faqs/1057)
**Author:** [@cathalmccabe](https://discuss.pynq.io/u/cathalmccabe)\ **Replies:** 0\ **Last updated:** [March 25, 2020, 10:58am UTC](https://discuss.pynq.io/t/read-me-how-to-ask-a-question-on-the-forum-and-faqs/1057 "2020-03-25T10:58:39Z")
How to post a question on the PYNQ forums This post is intended to cover information you should include when posting a question on the forums, to help you get a better/faster response to your issue. Please include as mu… --- ## [Read this before posting](https://discuss.pynq.io/t/read-this-before-posting/63)
**Author:** [@cathalmccabe](https://discuss.pynq.io/u/cathalmccabe)\ **Replies:** 0\ **Last updated:** [April 18, 2019, 8:15pm UTC](https://discuss.pynq.io/t/read-this-before-posting/63 "2019-04-18T20:15:51Z")
When posting support requests, please include the following information: PYNQ version you are using Your board Full details of the error message you see, or a detailed description of the problem you experience. Steps t… --- ## [About the Support category](https://discuss.pynq.io/t/about-the-support-category/55)
**Author:** [@naveen](https://discuss.pynq.io/u/naveen)\ **Replies:** 0
Post questions related to software framework, hardware/boards and overlays. --- ## [Bitstream works ok when programmed by JTAG but not from Pynq](https://discuss.pynq.io/t/bitstream-works-ok-when-programmed-by-jtag-but-not-from-pynq/858)
**Author:** [@Ralph\_Martin](https://discuss.pynq.io/u/Ralph_Martin)\ **Replies:** 22\ **Last updated:** [October 20, 2026, 1:44pm UTC](https://discuss.pynq.io/t/bitstream-works-ok-when-programmed-by-jtag-but-not-from-pynq/858 "2026-10-20T13:44:52Z")
I am currently developing a Pynq project, using a Pynq-Z2. I have already followed the tuorials and successfully created and used bitstreams from Python using the leds and switches. I have put together an audio IP block… --- ## [PYNQ ZU v3.0.1 image file](https://discuss.pynq.io/t/pynq-zu-v3-0-1-image-file/9180)
**Author:** [@Vageesh\_K](https://discuss.pynq.io/u/Vageesh_K)\ **Replies:** 2\ **Last updated:** [October 17, 2026, 4:22am UTC](https://discuss.pynq.io/t/pynq-zu-v3-0-1-image-file/9180 "2026-10-17T04:22:15Z")
Can someone please attach the link to DPU Pynq v3.0.1 image file for PYNQ-ZU board? I am unable to find it anywhere online and github --- ## [Low Ethernet Throughput (200 Mbps) on ZynqMP RFSoC4x2 with PYNQ - Is this a known limitation?](https://discuss.pynq.io/t/low-ethernet-throughput-200-mbps-on-zynqmp-rfsoc4x2-with-pynq-is-this-a-known-limitation/8982)
**Author:** [@Gergo\_Kovacs](https://discuss.pynq.io/u/Gergo_Kovacs)\ **Replies:** 18\ **Last updated:** [October 13, 2026, 1:43pm UTC](https://discuss.pynq.io/t/low-ethernet-throughput-200-mbps-on-zynqmp-rfsoc4x2-with-pynq-is-this-a-known-limitation/8982 "2026-10-13T13:43:12Z")
Hi everyone, I am running the latest PYNQ image (3.1.1) on RFSoC4x2 board, and I am struggling to achieve line-rate (1 Gbps) Ethernet performance. Currently, when running iperf3, I am consistently capped at approximate… --- ## [When I have two rfsoc4x2s, can I wirelessly transmit real-time webacm images to another rfsoc4x2?](https://discuss.pynq.io/t/when-i-have-two-rfsoc4x2s-can-i-wirelessly-transmit-real-time-webacm-images-to-another-rfsoc4x2/7737)
**Author:** [@asd3200asd](https://discuss.pynq.io/u/asd3200asd)\ **Replies:** 10\ **Last updated:** [October 8, 2026, 12:30pm UTC](https://discuss.pynq.io/t/when-i-have-two-rfsoc4x2s-can-i-wirelessly-transmit-real-time-webacm-images-to-another-rfsoc4x2/7737 "2026-10-08T12:30:50Z")
When I have two rfsoc4x2s, can I wirelessly transmit real-time webacm images to another rfsoc4x2? If so, what part of the information should I check? I checked about rfsoc\_4x2\_base\_overlay.md. Is it impossible to trans… --- ## [PYNQ-ZU FMC-LPC trace lengths or propagation-delay data](https://discuss.pynq.io/t/pynq-zu-fmc-lpc-trace-lengths-or-propagation-delay-data/9174)
**Author:** [@liyuan717](https://discuss.pynq.io/u/liyuan717)\ **Replies:** 0\ **Last updated:** [October 5, 2026, 3:31pm UTC](https://discuss.pynq.io/t/pynq-zu-fmc-lpc-trace-lengths-or-propagation-delay-data/9174 "2026-10-05T15:31:08Z")
Hello everyone, I am using a PYNQ-ZU with an AD9361/FMCOMMS3-compatible board for a university 2TX/2RX MIMO project. I have the official FMCOMMS3 PCB files, but cannot find PYNQ-ZU carrier-side trace lengths or propaga… --- ## [AUP-ZU3 Pcam 5C read frame stuck](https://discuss.pynq.io/t/aup-zu3-pcam-5c-read-frame-stuck/9010)
**Author:** [@Preston-Walker](https://discuss.pynq.io/u/Preston-Walker)\ **Replies:** 18\ **Last updated:** [October 1, 2026, 2:10am UTC](https://discuss.pynq.io/t/aup-zu3-pcam-5c-read-frame-stuck/9010 "2026-10-01T02:10:55Z")
Board: AUP-ZU3 (8GB) PYNQ Version: 3.1 Issue: readframe() hangs indefinitely when trying to capture frames from a Pcam 5C (OV5640) camera using the base overlay’s MIPI pipeline. The call never returns and no frames ar… --- ## [Low throughput to USB 3.0 storage on RFSoC 4x2](https://discuss.pynq.io/t/low-throughput-to-usb-3-0-storage-on-rfsoc-4x2/9150)
**Author:** [@DogP](https://discuss.pynq.io/u/DogP)\ **Replies:** 3\ **Last updated:** [September 16, 2026, 7:47am UTC](https://discuss.pynq.io/t/low-throughput-to-usb-3-0-storage-on-rfsoc-4x2/9150 "2026-09-16T07:47:39Z")
I’m using an RFSoC 4x2 with a USB SSD (Crucial X8) and seeing fairly low throughput to/from the SSD. I’m running PYNQ 3.1.1 with a patched device tree using the settings from @joshgoldsmith 's PR ( device tree fix for u… --- ## [Image Processing issue on PYNQ Z2](https://discuss.pynq.io/t/image-processing-issue-on-pynq-z2/9158)
**Author:** [@Danny10](https://discuss.pynq.io/u/Danny10)\ **Replies:** 0\ **Last updated:** [August 28, 2026, 10:25am UTC](https://discuss.pynq.io/t/image-processing-issue-on-pynq-z2/9158 "2026-08-28T10:25:36Z")
Hello everyone! I am working in a startup where i am working on the pynq Z2 for media trasmission. I am trying a Image processing on PYNQ Z2 board where i am testing VDMA for image processing but even after register set… --- ## [Controlling image tones on ZCU208](https://discuss.pynq.io/t/controlling-image-tones-on-zcu208/9155)
**Author:** [@reki](https://discuss.pynq.io/u/reki)\ **Replies:** 1\ **Last updated:** [August 25, 2026, 10:52am UTC](https://discuss.pynq.io/t/controlling-image-tones-on-zcu208/9155 "2026-08-25T10:52:51Z")
I am trying to send signals on my ZCU208 board, and am new to the field of signal processing. My board is the ZCU208, and I am using the base overlay. I have changed it slightly to get a sense of how the development proc… --- ## [How to Work Around Xlnk being used in https://github.com/Xilinx/LSTM-PYNQ](https://discuss.pynq.io/t/how-to-work-around-xlnk-being-used-in-https-github-com-xilinx-lstm-pynq/3810)
**Author:** [@savannah](https://discuss.pynq.io/u/savannah)\ **Replies:** 4\ **Last updated:** [August 24, 2026, 2:22pm UTC](https://discuss.pynq.io/t/how-to-work-around-xlnk-being-used-in-https-github-com-xilinx-lstm-pynq/3810 "2026-08-24T14:22:10Z")
Hi, I am trying to use the PYNQ board for Optical Character Recognition (OCR). I found this git repo that does exactly what I am looking for; however, it is a few years old and is still using Xlnk. So, when I try to clo… --- ## [PYNQ Z2 old 3d model](https://discuss.pynq.io/t/pynq-z2-old-3d-model/6592)
**Author:** [@briansune](https://discuss.pynq.io/u/briansune)\ **Replies:** 1\ **Last updated:** [August 23, 2026, 2:43am UTC](https://discuss.pynq.io/t/pynq-z2-old-3d-model/6592 "2026-08-23T02:43:22Z")
Dear all, I would like to point out an issue: Modulator posted STEP 3D CAD is not aligned with the latest purchase board. As we can see here: However, the actual board: It is sure below 11mm, hences using such… --- ## [PYNQ Z2 3D files and/or technical drawing](https://discuss.pynq.io/t/pynq-z2-3d-files-and-or-technical-drawing/9152)
**Author:** [@0115\_ROSHAN\_TRIPATHY](https://discuss.pynq.io/u/0115_ROSHAN_TRIPATHY)\ **Replies:** 0\ **Last updated:** [August 23, 2026, 2:41am UTC](https://discuss.pynq.io/t/pynq-z2-3d-files-and-or-technical-drawing/9152 "2026-08-23T02:41:31Z")
I am trying to make a extension board and for the same i need the exact measurements of the PMOD and HDMI of the PYNQ Z2 board. Prior forum post have a STL file but other posts mention that the distance between the PMODs… --- ## [Does PYNQ support ZU67DR?](https://discuss.pynq.io/t/does-pynq-support-zu67dr/6780)
**Author:** [@w22161](https://discuss.pynq.io/u/w22161)\ **Replies:** 10\ **Last updated:** [August 21, 2026, 2:31pm UTC](https://discuss.pynq.io/t/does-pynq-support-zu67dr/6780 "2026-08-21T14:31:08Z")
FPGA: zu67DR PYNQ: 3.01 tried GitHub - Xilinx/PYNQ: Python Productivity for ZYNQ and GitHub - Xilinx/RFSoC-PYNQ: Python productivity for RFSoC platforms Hi , Does PYNQ support ZU67DR? From description, it should supp… --- ## [Audio processing failed in PYNQ Z2](https://discuss.pynq.io/t/audio-processing-failed-in-pynq-z2/9145)
**Author:** [@Danny10](https://discuss.pynq.io/u/Danny10)\ **Replies:** 0\ **Last updated:** [August 8, 2026, 4:47pm UTC](https://discuss.pynq.io/t/audio-processing-failed-in-pynq-z2/9145 "2026-08-08T16:47:26Z")
hello everyone, I am assigned to a project on pynq. I want to transfer a LIve audio in the board . but getting error in transmitting . I am using VIVADO 23.1 version to built a block diagrm for my own BItstream generati… --- ## [Pynq Z2 Ethernet Connection](https://discuss.pynq.io/t/pynq-z2-ethernet-connection/9143)
**Author:** [@Danny10](https://discuss.pynq.io/u/Danny10)\ **Replies:** 2\ **Last updated:** [August 8, 2026, 6:38am UTC](https://discuss.pynq.io/t/pynq-z2-ethernet-connection/9143 "2026-08-08T06:38:53Z")
Hello everyone!!! I am working on Pynqz2 board where as per setup guide I have even properly working on the board by accessing jupyter notebook. But I was getting issue that i don’t have PL I2c adapter to resolve it i … --- ## [RFsoc 4\*2 (RF Analyzer application issue)](https://discuss.pynq.io/t/rfsoc-4-2-rf-analyzer-application-issue/9109)
**Author:** [@Vamsi](https://discuss.pynq.io/u/Vamsi)\ **Replies:** 2\ **Last updated:** [August 6, 2026, 4:40am UTC](https://discuss.pynq.io/t/rfsoc-4-2-rf-analyzer-application-issue/9109 "2026-08-06T04:40:35Z")
Hey Folks, i am trying to do spur analysis for rfsoc 4\*2 board, i thought to use RF analyzer application for whole chain analysis, but when i am trying to do the setup with board\<-\> RF Analyzer application, i am getting… --- ## [wip220 library not appearing in Vitis 2026.1 standalone BSP for Zynq-7000 – encoding fix applied, hardware verified](https://discuss.pynq.io/t/wip220-library-not-appearing-in-vitis-2026-1-standalone-bsp-for-zynq-7000-encoding-fix-applied-hardware-verified/9136)
**Author:** [@Brendan](https://discuss.pynq.io/u/Brendan)\ **Replies:** 1\ **Last updated:** [July 29, 2026, 4:26pm UTC](https://discuss.pynq.io/t/wip220-library-not-appearing-in-vitis-2026-1-standalone-bsp-for-zynq-7000-encoding-fix-applied-hardware-verified/9136 "2026-07-29T16:26:24Z")
PYNQ version & Board name & Tool Version Board: PYNQ‑Z2 (xc7z020clg400-1) Tools: Vivado 2026.1 / Vitis 2026.1 PYNQ image: not used – this is a bare‑metal standalone application (no Linux, no PYNQ framework). OS: Standa… --- ## [DMA error in DAC-ADC loopback](https://discuss.pynq.io/t/dma-error-in-dac-adc-loopback/5773)
**Author:** [@mselva2](https://discuss.pynq.io/u/mselva2)\ **Replies:** 5\ **Last updated:** [July 27, 2026, 6:46am UTC](https://discuss.pynq.io/t/dma-error-in-dac-adc-loopback/5773 "2026-07-27T06:46:17Z")
PYNQ Version: PYNQ 2.7.0 Board: ZCU111 Error: DMA channel not started ADC : ADC224\_T0\_CH0 DAC: DAC229\_T1\_CH2 Problem Description: I want to do DAC-ADC loopback in ZCU111 board. So, I generated sinusoidal signal of … --- ## [Pynq on zcu208](https://discuss.pynq.io/t/pynq-on-zcu208/2400)
**Author:** [@andrea](https://discuss.pynq.io/u/andrea)\ **Replies:** 13\ **Last updated:** [July 24, 2026, 11:46pm UTC](https://discuss.pynq.io/t/pynq-on-zcu208/2400 "2026-07-24T23:46:26Z")
Hello, I have a question. I would like to know if it’s possible to use a pynq SD image with a zcu208 board. I find the images for ZCU104 and ZCU111, but I would like to ask if a ZCU208 is availabe or if it will be. T… --- ## [RuntimeError: No Devices Found on fresh PYNQ 3.1.1 image, multiple PYNQ-Z2 boards](https://discuss.pynq.io/t/runtimeerror-no-devices-found-on-fresh-pynq-3-1-1-image-multiple-pynq-z2-boards/9134)
**Author:** [@priyanshu\_pranay](https://discuss.pynq.io/u/priyanshu_pranay)\ **Replies:** 2\ **Last updated:** [July 24, 2026, 11:43am UTC](https://discuss.pynq.io/t/runtimeerror-no-devices-found-on-fresh-pynq-3-1-1-image-multiple-pynq-z2-boards/9134 "2026-07-24T11:43:45Z")
\- Environment: Board: PYNQ-Z2 (tested on 2+ boards) PYNQ version: 3.1.1 (fresh official image from PYNQ supported boards and PYNQ pre-built images | PYNQ) Bitstream: Vivado 2024.1 OS: Ubuntu 22.04 Problem: Overlay … --- ## [Two channel Phase synchronized RF output from RFSoC 4\*2 board](https://discuss.pynq.io/t/two-channel-phase-synchronized-rf-output-from-rfsoc-4-2-board/8817)
**Author:** [@sujit](https://discuss.pynq.io/u/sujit)\ **Replies:** 2\ **Last updated:** [July 17, 2026, 1:46pm UTC](https://discuss.pynq.io/t/two-channel-phase-synchronized-rf-output-from-rfsoc-4-2-board/8817 "2026-07-17T13:46:35Z")
I want to generate two RF output of same frequency and same amplitude in two channels of the RFSoC board but they should be perfectly phase synchronized. Currently I am not able to generate the phase synchronization. The… --- ## [RFSoC 4x2: USB host and USB Device NOT working](https://discuss.pynq.io/t/rfsoc-4x2-usb-host-and-usb-device-not-working/6090)
**Author:** [@Mohammad\_Hossein\_Sam](https://discuss.pynq.io/u/Mohammad_Hossein_Sam)\ **Replies:** 14\ **Last updated:** [July 13, 2026, 1:33pm UTC](https://discuss.pynq.io/t/rfsoc-4x2-usb-host-and-usb-device-not-working/6090 "2026-07-13T13:33:22Z")
Hi, By all means, I tried all different ways including following link: Unfortunately none of the USB ports are functional. the board is not able to detect any connected USB key or USB camera. lsblk, lsusb in termina… --- ## [ZCU111 DAC ADC Loopback keep getting stuck](https://discuss.pynq.io/t/zcu111-dac-adc-loopback-keep-getting-stuck/9123)
**Author:** [@HIMANSHU\_HIMANSHU](https://discuss.pynq.io/u/HIMANSHU_HIMANSHU)\ **Replies:** 5\ **Last updated:** [July 13, 2026, 1:31pm UTC](https://discuss.pynq.io/t/zcu111-dac-adc-loopback-keep-getting-stuck/9123 "2026-07-13T13:31:42Z")
PYNQ Version : 3.0.1 Vivado version 2022.1 I am trying to build a simple ADC and DAC loopback setup for ZCU111 and getting stuck in the dac configuration step. import numpy as np import scipy import scipy.io import sc… --- ## [Increasing DAC sampling rate for RFSoC board](https://discuss.pynq.io/t/increasing-dac-sampling-rate-for-rfsoc-board/9099)
**Author:** [@grant](https://discuss.pynq.io/u/grant)\ **Replies:** 6\ **Last updated:** [July 3, 2026, 1:44pm UTC](https://discuss.pynq.io/t/increasing-dac-sampling-rate-for-rfsoc-board/9099 "2026-07-03T13:44:11Z")
Hi, I am working with the RFSoC 4x2 board and would like increase the DAC sampling rate to 9.8 GSPS as advertised in the manual. I looked at past forums and it seems it can be set using xrfdc driver but I am confused how… --- ## [DynamicPLLConfig freezes RFSoC4x2](https://discuss.pynq.io/t/dynamicpllconfig-freezes-rfsoc4x2/7365)
**Author:** [@xinyang](https://discuss.pynq.io/u/xinyang)\ **Replies:** 2\ **Last updated:** [July 3, 2026, 12:59pm UTC](https://discuss.pynq.io/t/dynamicpllconfig-freezes-rfsoc4x2/7365 "2026-07-03T12:59:36Z")
Dear PYNQ Community, The system environment I am working on: Ubuntu 20.04.6 LTS Vivado 2022.1 PYNQ 3.0.1 I have developed a small project on RFSoC4x2 which uses a DMA to read stored IQ samples and send them to RF dat… --- ## [ZCU111 RFSOC PYNQ External clocking ( LMX2594 )](https://discuss.pynq.io/t/zcu111-rfsoc-pynq-external-clocking-lmx2594/689)
**Author:** [@SimonHildebrand](https://discuss.pynq.io/u/SimonHildebrand)\ **Replies:** 3\ **Last updated:** [July 3, 2026, 11:02am UTC](https://discuss.pynq.io/t/zcu111-rfsoc-pynq-external-clocking-lmx2594/689 "2026-07-03T11:02:10Z")
Hi, I am using PYNQ with ZCU111 RFSOC board. I can reprogram the LMX2594 external PLL using the SDK baremetal drivers. However I have never succeeded in progamming the LMX2594 from PYNQ Pyhton drivers. I have taken one … [Next page](https://discuss.pynq.io/c/support/30.md?page=1)