On Mon, 11 Nov 2013 09:28:24 +0000, Tom Gardner <spamjunk@blueyonder.co.uk> wrote:>On 11/11/13 03:08, John Larkin wrote: >> On Sun, 20 Oct 2013 08:47:57 +0100, Tom Gardner <spamjunk@blueyonder.co.uk> >> wrote: >> >>> On 20/10/13 03:02, Paul Rubin wrote: >>>> Tom Gardner <spamjunk@blueyonder.co.uk> writes: >>>>> I'd like to pick people's brains about aspects of >>>>> different *suppliers* of Zynq boards. >>>> >>>> Do you know anything about the microzed? I just heard of it, and it >>>> looks interesting: >>>> >>>> http://microzed.org >>>> http://linuxgizmos.com/tiny-sbc-runs-linux-on-xilinx-zynq-arm-fpga/ >>>> >>>> Also the Zybo: >>>> >>>> http://www.digilentinc.com/Products/Detail.cfm?Prod=ZYBO >>> >>> They do indeed look interesting for my purposes, but I only >>> know what I can read on the web. >>> >>> So, we would /both/ like some info about the suppliers :) >>> >>> >> >> We're just starting on a uZed signal-processing project. It will be a uZed >> plugged into a motherboard that has power, clock, signal input and output >> networks, ADC, DAC, connectors, and miscellaneous stuff. We bought two uZed >> boards from Avnet and they power up running Linux. My programmer and FPGA guys >> are just now learning how to write a C app that interacts with the FPGA, but the >> documentation seems good and they are making good progress. I'll be doing the >> architecture and designing the hardware. >> >> I took some pictures. The ones in the ZED documentation are mediocre. >> >> https://dl.dropboxusercontent.com/u/53724080/PCBs/Micro_Zed_Top.JPG >> >> https://dl.dropboxusercontent.com/u/53724080/PCBs/Micro_Zed_Bottom.JPG >> >> https://dl.dropboxusercontent.com/u/53724080/PCBs/Micro_Zed_End.JPG > >Thanks, that's useful, and I will be *most* interested to hear how >it goes. > >Out of curiosity, how long ago did you buy them and how long did >they take to materialise? Currently Avnet are showing no stock >and 5 weeks lead time. > >Worryingly, it has been "5 weeks" for the past 3 weeks - so I'm >concerned that Avnet have "lost interest" in the board. Any info >about Avnet's support practices would be useful. >It took about a week to get two, several weeks ago. They can probably find some for good customers. We buy a lot of stuff from them, and it was "get us a couple and we'll design them in." The good part is that the design, including Gerbers, is fully public, so we (or someone) can build them if we have to. It will save us a ton of time, as compared to doing all that pcb-layout/flash/dram/ethernet/power supply/software stuff ourselves. I hope they are serious about it. They have sure invested a lot so far. The carrier/demo board is apparently not real yet. We'll have our own application board first, with spare room, so we'll add in some development hooks for future projects. Suggestions are welcome.... Mictor connector for a logic analyzer Pots for the ADC inputs A few SMB connectors for scope trigger/signal snooping Shunts to measure Vcc and bank currents Easy ways to vary iobank voltages Dip switches and LEDs Temperature sensor IC Clock oscillators -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
Zynq devices, boards and suppliers
Started by ●October 16, 2013
Reply by ●November 11, 20132013-11-11
Reply by ●November 11, 20132013-11-11
John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> writes:> The good part is that the design, including Gerbers, is fully public,... > I hope they are serious about it. They have sure invested a lot so far.That big wire on the back of the board in your photo is interesting. Although red in color, it looks like what's traditionally called a "blue wire", i.e. maybe they're out of stock right now because the board is in the process of being revved.
Reply by ●May 28, 20142014-05-28
I'd like to make a couple of comments based on my experience, in the hope they might be helpful to other netizens. In the end I purchased an Avnet MicroZed and JTAG cable in January. The ordering process was smooth but the delivery wasn't. An email confirmed the stated 3 week delay for the MicroZed, and that the JTAG cable /was/ in stock. However, the next day the website showed an 18(!) delay until May. I quickly cancelled the now out of stock JTAG cable, and the MicroZed turned up in March, after maybe 8 weeks. That is unacceptable and makes me unlikely to choose to use Avnet as a distributor. More positively, the MicroZed documentation and support have been exemplary; the potential concerns I raised in the note below haven't been bourne out. Indeed Avnet have expanded their range and appear to be making concerted efforts to make a business in this area. So far I have /no/ concerns about having chosen to use a MicroZed, although nowadays I would probably choose to use the MicroZed SBC board variant. On 16/10/13 12:28, Tom Gardner wrote:> I'd like to pick people's brains about aspects of > different *suppliers* of Zynq boards. Avnet and Digilent > are front-runners, but any info/opinions about other > suppliers would be helpful too. > > - ease of using their embedded linux. My needs > are simple, requiring a shell and TCP/IP protocols > over ethernet. GUI not required, but might be > used if it didn't complicate the development. > > - quality of online support. How easy is it > likely to be to find the information so that > I can (a) duplicate any supplied demo environment > and (b) mutate it so that my code accesses my > programmable logic > > - board production longevity. I'm not concerned > about decades, but I would be concerned if a > board was unobtainable within months > > - ISE or Vivado environment > > Background and context... > > I'm intending to develop something based around a small > Xylinx Zynq device. Cost is an issue, but not to the > extent that I will be developing a board containing > the FPGA itself. I will, however, be developing a small > simple add-on board containing my analogue circuits. > > Now I can read a datasheet and schematic and outline > to determine the extent to which a board is suitable. > However, as we are all aware, those documents /don't/ > cover all the important points when choosing a board! > > I've created many stand-alone hardware and software > embedded systems, but *not* based on linux *nor* on ARM > *nor* in the Xilinx ecosystem. Since Zynq devices > represent a complex environment, I'll have a learning > curve (good, I like challenges), and I'm interested > in the quality of the resources and support that > I'll need to overcome my misapprehensions.
Reply by ●June 29, 20152015-06-29
Hi You can have a look at MYIR's Z-turn Board which is Xilinx Zynq-based Single board computer pricing start at only US$99. http://www.myirtech.com/list.asp?id=502 在 2013年10月16日星期三 UTC+8下午7:28:44，Tom Gardner写道：> I'd like to pick people's brains about aspects of > different *suppliers* of Zynq boards. Avnet and Digilent > are front-runners, but any info/opinions about other > suppliers would be helpful too. > > - ease of using their embedded linux. My needs > are simple, requiring a shell and TCP/IP protocols > over ethernet. GUI not required, but might be > used if it didn't complicate the development. > > - quality of online support. How easy is it > likely to be to find the information so that > I can (a) duplicate any supplied demo environment > and (b) mutate it so that my code accesses my > programmable logic > > - board production longevity. I'm not concerned > about decades, but I would be concerned if a > board was unobtainable within months > > - ISE or Vivado environment > > Background and context... > > I'm intending to develop something based around a small > Xylinx Zynq device. Cost is an issue, but not to the > extent that I will be developing a board containing > the FPGA itself. I will, however, be developing a small > simple add-on board containing my analogue circuits. > > Now I can read a datasheet and schematic and outline > to determine the extent to which a board is suitable. > However, as we are all aware, those documents /don't/ > cover all the important points when choosing a board! > > I've created many stand-alone hardware and software > embedded systems, but *not* based on linux *nor* on ARM > *nor* in the Xilinx ecosystem. Since Zynq devices > represent a complex environment, I'll have a learning > curve (good, I like challenges), and I'm interested > in the quality of the resources and support that > I'll need to overcome my misapprehensions.
