5 ай бұрын
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@guymengel1048 4 күн бұрын
What a joy! Being a Ham, there are some that understand in detail how the tayloe works.. but there are far more that rather operate than understand "why"... I am a "why" person and enjoy your videos greatly! Thanks for your efforts! guy N1GMM
@guymengel1048 4 күн бұрын
Very nice video describing Dan's work on tayloe designs. A big hobby of mine. I like playing with the tayloes and have made and used several versions.. I still have many softrock RXTX units I am trying to understand. The clock generator is an SI570 programable with the attiny and software on a PC. I purchased the M2K just to play with these on a breadboard.. and develop and use some sort of DSP on the output to an lcd. What fun! I am ~68 and working thru recovery from some strokes by doing this.. Thanks! Guy N1GMM
@electronics.tinker 4 күн бұрын
Sounds like fun. This year, I built the simplest softrock (40 meter only) mainly to prove that I can wind a toroid. I hope you enjoy the M2K. I think it's an excellent tool for learning and hobbyist experiments. I expect the Analog Discovery 3 is also good (but more expensive). I have also enjoyed using companies like PCB Way (they do not sponsor me) to design and build my own PC boards. If you can build something on a bread board, it's fairly simple and amazingly cheap to put it onto your own PCB. I don't make videos about this process because many already exist. My professional background is software, but I worked for many years for a company that designs and builds microprocessors/microcontrollers. Working with hardware design (PCBs and FPGA) has increased my appreciation for my old hardware design coworkers! Best wishes.
@guymengel1048 4 күн бұрын
Thanks. I also worked in semiconductor industry as a test engineer, microcontrollers, eeprom,flash memory 9 years at Intel, another 5 at Infineon, ibm,Motorola. All flash.
@guymengel1048 4 күн бұрын
Hello Sir, Name here is guy and I am an older Ham N1GMM. I love your work on these videos. My M2K will be here today + a lab kit. I love your descriptions and very detailed information. I would love to converse sometime with you on email I think you must be an Amateur Radio op. So you will know how to contact me as my QTH and email are good on QRZ. Really like your videos!
@electronics.tinker 4 күн бұрын
Thank you for your kind comments in this and other replies. I make videos on topics that interest me and then hope that they might interest other people also. Actually, I am not a HAM. But, I have done quite a bit with SDR receivers, both my sdrplay and RTL-SDRs. I have received SSTV, many digital signals, signals from trunked radio, and signals from satellites. I have been a bit reluctant to get my license and transmit, mainly due to lack of space for equipment and a reluctance to install a serious antenna. My "lab bench" is about 6 square feet! Cheers.
@AstroMikeMerri 6 күн бұрын
Coincidentally, I was playing with exactly this to try and make a simple signal generator today! Please could you put the code you were using up, as you suggested? Also, you only present the two limiting cases here - what is the maximum speed at which you can run the pot without breaking it?
@electronics.tinker 5 күн бұрын
Hi. The source code for the sketch is on github. There is a link in the video's description. I see a pretty clean wiper voltage signal with 20 usec of INCR# cycle time, but I am not sure the datasheet guarantees this. To be honest, I am skeptical that digital pots make good signal generators, at least for signal frequencies above a few 10s of Hz to a few hundred Hz. I was playing with an MCP4131 (controlled by SPI) using a Raspberry Pi Zero. I made a video about this device's strange use of SPI. I didn't show it in the video, but I generated good looking sine waves with frequencies below about 200 Hz. Higher frequencies start to look worse. Of course, Linux on an RPI is poor at super consistent timing of SPI commands. To improve it, I would think about switching to a Raspberry Pi Pico and using its PIO peripheral to generate SPI commands. Cheers.
@ihabsglei 8 күн бұрын
Thanks for the analysis. 👍
@spillagonner 13 күн бұрын
Hey, Grug! You might have mentioned that you changed the assignment of pins on the RPi.
@electronics.tinker 12 күн бұрын
You are right. Looking back on it, that whole github repo is a bit of a mess. I don't think I'll change the videos, but I may fix up the repo, including better documentation of pins. I need to recall why I changed pins on the rpi... Perhaps not all pins are capable of being set to open drain.
@theltenetwork9203 14 күн бұрын
Thanks, this helped alot with my lab where I needed to decode an I2C signal.
@CaptainFuzzo 16 күн бұрын
thanks a ton, this is exactly what i was looking for
@GlennHamblin 20 күн бұрын
Thanks, I appreciate the introduction to this little board. I really want to learn FPGAs, I just have yet to find a good project to apply it to. 😊
@electronics.tinker 20 күн бұрын
Thanks. I'm glad you enjoyed it. I think learning some Verilog (or VHDL) is good, and these cheap FPGAs are a great vehicle for that. But I also agree that modern microcontrollers are so capable that many projects do not require an FPGA. One area where FPGAs shine is implementing peripherals that operate autonomously alongside a microcontroller. For example driving addressable LEDs requires fairly tight and consistent timing. It's nice to have that decoupled from software in case the microcontroller has something serious to do along with controlling the LED. Cheers.
@spillagonner 24 күн бұрын
Definitely a learning experience! Thanks (although I think my head might explode).
@paulspark7287 25 күн бұрын
With the Nano 20K, have you experienced the issue of not being able to program it again? I programmed a design earlier and unlike other FPGA boards, the design is persisted after powering off. I cannot program my 20K anymore no matter what I try. Initially it wouldn't program until I dropped the frequency from 2.5 to 2MHz.. but neither is helping now. I've tried powering up with the S2 button held down but I still can't get anything to load.
@electronics.tinker 25 күн бұрын
Sorry, I do not see that. My Tang Nano 20K programs reliably. I use default frequencies and do not have to press a button. I can load the design to SRAM (which is not permanent) or to flash (which is). I can program it using the latest Gowin educational tools on Windows (but not Linux). On Windows, the only problem is that sometimes I need to select Edit/Cable Setting/USB Cable Setting and let the tool find the device. On Linux Ubuntu 22.04 openfpgaloader works very reliably. See my video on getting started with the Tang Nano 9K for more on openfpgaloader. Best wishes
@paulspark7287 25 күн бұрын
@@electronics.tinker It was my mistake. I thought multiple files could be programmed at once, but they all need to be loaded individually.. So I just had to hold down S2 while powering up and ensure that only one file was checked in the Gowin programmer. The errors the programmer gives back tend to be a bit misleading. ..and yeah, I'm using Windows.
@spillagonner 29 күн бұрын
Greg...at 7:16, after having done the floor planning, you say 'and...we should be able to synthesize...,' when you mean to say 'place and route.'
@electronics.tinker 29 күн бұрын
You are right. I had not noticed that misspeaking. Cheers.
@spillagonner Ай бұрын
Hey Greg! Using your videos to try getting into FPGA. Downloaded Gowin FPGA Designer v1.9.9.03 Education build to my Ubuntu 22.04 ThinkPad. On start-up, terminal reports: Qt: Session management error: None of the authentication protocols specified are supported. Any clues? Should I be worried?
@electronics.tinker Ай бұрын
I get the same thing: Qt: Session management error: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed It has not caused me problems. I think Gowin tested their Linux-based tools on a version of Ubuntu even older than 22.04. As you use newer versions of Ubuntu, problems get worse. Gowin's strategy for supporting Linux is not very good. Frankly, the Gowin tools work a lot better on Windows (at least Windows 10-- I don't have a computer capable of running Windows 11). I have started running the Gowin tools mostly on Windows as the path of least resistance, and I run Ubuntu 22.04 under Windows Subsystem for Linux (WSL2) on the same machine. This allows me to continue to use Ubuntu for software builds. I prefer Linux to Windows, but Gowin does not make it easy! Cheers.
@cengizhan1235 Ай бұрын
Grug, great video. thanks. I am looking image processing or voice processing applications using tang nano 9k, i dont know if you are interested in signal processing.
@electronics.tinker Ай бұрын
Glad you liked the video. I don't know much about signal processing, though.
@YoutubeBorkedMyOldHandle_why Ай бұрын
Great video, thanks for posting it. I don't have the 4K, but I have a 9K and a couple of 20Ks. Umm ... perhaps a dumb question but, what in your opinion is the point of an fpga chip having a hard core, as compared with just connecting an fpga to a separate microcontroller? It's interesting that this is available, but are there any practical uses where this might make sense, or is this mostly a matter of keeping traces on the silicon real short?
@electronics.tinker Ай бұрын
Yes, there are circumstances in which having a hard core makes sense. Imagine that the FPGA is being used to implement a high-speed peripheral, a computational accelerator, or both. Also, assume that these are to be memory-mapped peripherals of a controlling core. The number of signals coming out of the core is pretty high. For that reason alone, it can make sense to integrate the core into the FPGA. I think this is more likely in larger FPGAs where the you need may be even more sophisticated core than an M3. Integrating a a hard Cortex-A53 (to run Linux), hard DDR controller, hard ethernet, etc. is possible (actually easy to find) on larger FPGAs. The FPGA becomes a complete Linux-capable system-on-a-chip connected internally to the FPGA resources. More complex interconnects than APB will be used so the signal count and frequency will be high. Also , some of the signals may be differential. The smaller the FPGA, the less this makes sense (at least on average). Cheers.
@ivolol Ай бұрын
Very nice video. Tang could almost employ you to promote their products given the quality of tutorial you provide. Does that GPIO interface, mean that the FPGA cannot get signals 'directly' through the GPIO pins but only through the ARM core? That would seem be a downside but maybe I misinterpret. It seems possibly that this board was intended to be focused on Camera/HDMI functions, rather than being 'general purpose'? I would look forward to any material you could show of a simple project demonstrating the MCU and FPGA interacting. If you install the msys2 distribution platform for windows, it allows you to get a number of toolchains. The most famous one is the MinGW-w64 fork of GCC that is compatible directly with Windows; but it also includes a great many other 'normally linux' tools to get (make, cmake, etc etc etc). It basically uses a version of Archlinux' pacman package manager to install tools for windows. Of interest, you can install the 'mingw-w64-x86_64-arm-none-eabi-toolchain' meta-package in order to get a GCC toolchain for ARM, and clang is also available as well (both for x86/x64 and ARM). Also available is using xpm ("the xPack Project Manager"), using that package installer you can get '@xpack-dev-tools/arm-none-eabi-gcc' which will also give you a GCC for ARM. As you say, using some linux distribution underneath WSL2 is also a good option these days. In terms of USB-Serial adapters, there a good number of other chips on the market that side-step the problem of using fake FTDI FT232RL chips. Ones using Silicon Lab's CP2102 or CP2104 ICs generally work very well, and probably either auto-install drivers on newer windows or they're pretty easily to find on the net and install.
@VandalIO Ай бұрын
Thank you for this !! Was looking for something like this
@electronics.tinker Ай бұрын
Glad you found it useful. I had noticed that there is not too much information out there on the M3 on the Tang Nano 4K.
@alexeygordienko6066 Ай бұрын
Man, thank you for your work on the manuals!👍
@lorenzocapobianco3043 Ай бұрын
3:10 [SOLVED] I had the same dependencies problems on Fedora. More in detail, the error message was "undefined symbol: FT_Done_MM_Var". After searching online, it seems the problem is related to the library "libfreetype.so.X" (where X is a number) stored in "IDE/lib" folder. Renaming or deleting it should solve the problem. In my case, I just renamed it into "libfreetype.so.6.old" and the IDE started working without any problem. Hope this can be useful for someone else too.
@electronics.tinker Ай бұрын
That's good information, thanks. I decided that the path of least resistance is to run Gowin on Windows, though.
@WILLMARFERNANDOROMEROMARIN 11 күн бұрын
it work for me too in Ubuntu 24.04.1 LTS, thanks very much
@SaiprasadToshatwad Ай бұрын
What i mean is to create interface for HLS(High level synthesis) for any kind of fpga
@SaiprasadToshatwad Ай бұрын
Hi sir, I was curious about FPGAs and their capabilities for faster computing and matrix multiplication. That's why I bought a TAN Nano 20K for machine learning on the edge. I just want to know if we can talk to the Nano 20K via JTAG communication and perform high-speed computing. I mean, given an address for matrix multiplication in the FPGA, can we access that address to calculate the result in C programming?
@camister69 Ай бұрын
Thank You! It works! Ubuntu 18.04 LTS
@matthewvenn 2 ай бұрын
Great video, thanks for the clear explanation!
@ErikS- 2 ай бұрын
Excellent tutorial.
@Tridenux 2 ай бұрын
is it possible to make 100mhz to 5.5ghz sdr by a human hand {DIY}
@electronics.tinker 2 ай бұрын
That would be much harder. Simple, cheap analog multiplexers are not fast enough. Also producing quadrature LO signals at such high speeds would need different techniques.
@lukaspfitscher8737 2 ай бұрын
I have these thissh script: my verilog file and my io map file. I dont think you need all this GUI stuff fil_v="main.v" fil_io="io_map.cst" yosys -q -D LEDS_NR=6 -p "read_verilog $fil_v; synth_gowin -json net1.json" yowasp-nextpnr-gowin -q --json net1.json --write net2.json --device GW1NR-LV9QN88PC6/I5 --family GW1N-9C --cst $fil_io gowin_pack -d GW1N-9C -o main.fs net2.json openFPGALoader -b tangnano9k main.fs
@electronics.tinker 2 ай бұрын
You are using an open source tool chain which has its advantages. But. using Gowin hard IP blocks might be harder without the Gowin tool chain. I am not sure. Thanks for the comment.
@blenderbuch 2 ай бұрын
Thanks! Just the simple first example I looked for.
@paulspark7287 2 ай бұрын
Thanks so much for doing this video. I'm new to the Tang Nano devices. I was a reluctant to use them since I was so comfortable with SignalTap on the Cyclone IV but having seen the GAO in action I'm definitely keen to play more with the Tang Nano - and they certainly synthesise a lot faster than the Cyclone IV/V devices! I love the small size of the Tang Nano devices too.
@electronics.tinker 2 ай бұрын
Glad you found it helpful. I was attracted to the Tang Nano boards by their low cost. They are cheap enough to buy just to tinker with them and learn about FPGA development. I also like that they are bread board friendly. GAO is helpful, at least on Windows. The latest educational version is more stable.
@paulspark7287 2 ай бұрын
@@electronics.tinker I only dug out my old Nano 1k board the other day. I bought it a few years back. I couldn't use the educational version - it no longer supported my device so I got in touch with Gowin. They replied to me very quickly and advised me to install the latest non-educational version. I had avoided the non-educational version thinking there would be an associated cost with the license but there doesn't appear to be.
@electronics.tinker 2 ай бұрын
I have read that the non-educational version is free, but you have to apply for a license (I think annually). I have been using the educational version just to avoid bothering with a license. Have you noticed any features missing from the educational version other than support for some devices? That would be interesting to know. Cheers.
@paulspark7287 2 ай бұрын
@@electronics.tinker I haven't used it enough to notice, sorry. When you install the 'full' version, it replaces the educational one (on Windows) so I haven't been able to do a side-by-side comparison. I do switch between 3 PCs though and I've had no trouble getting licenses for all 3. They're pretty good with their support - definitely a game changer for people wanting to get into FPGA on a budget. My project got too large for the Cyclone IV - mainly because of the amount of logging I was doing with SignalTap, so that's what forced me into buying a Cyclone V - just for development. I'm sure the Tang 1k/4k/9k will suffice my needs - and to be honest, the 4K seems to be the same price as the 9k now. I think the only concern with these boards is the number of pins.. but the Tang Primer seems to have that covered. I think you can even swap out 25k chips on those Primer dev boards too which is quite exciting.
@ΝικΝοκ 2 ай бұрын
Very nice and clear video! I have tang primer 20k and i have issues with analyser oscilloscope. Does it work for you?
@electronics.tinker 2 ай бұрын
The analyzer oscilloscope works for me only on Windows, where I have found it to be useful on both the Tang Nano 9K and the Tang Nano 20K. Tools version 1.9.9.03 education is better than the older version. But I have never gotten the oscilloscope to work on Linux (Ubuntu 22.04.05). The loader/programmer is also problematic on Linux but works ok on Windows. In the end, better to use Windows for Gowin if you can.
@ΝικΝοκ 2 ай бұрын
@@electronics.tinker it is sad that it doesnt work on linux... as for the programmer i found out that openFPGALloader works fine with ubuntu (it is mentioned on their website as am alternative). I hope they make an alternayive to gao too. Their fpgas are nice and affordable, it would be great to work on linux too
@abbassahwan5107 2 ай бұрын
Amazing I have been looking for a guide like this to build something on that same FPGA. Do you know if there is anyway I can get it to run linux?
@electronics.tinker 2 ай бұрын
My bet is that running Linux on PicoRV32 would not be possible unless you add support to Linux for the PicoRV32's non-standard interrupts. And then you would have to run MMU-less Linux which is possible but not a great idea in my opinion. And you would need at add support for the Gowin PSRAM to get enough memory. Running Linux on a larger soft core than PicoRV32 is probably possible on the Tang Nano 9K. See the litex project. I am 100% sure it is possible on the Tang Nano 20K, but even then I think it makes more sense on a hard RISC-V core that complies to the supervisor-level spec or a hard Cortex-A core. I don't know of a cheap FPGA with either, though. Connecting a Raspberry Pi Zero to a small Tang Nano board by something faster than i2c would be possible and interesting. Best wishes.
@abbassahwan5107 2 ай бұрын
@@electronics.tinker thank you for your detailed response to my question!! I did look up the litex project. It says it is possible to be made on the 9k. Thank you for the information!!
@ΝικΝοκ 2 ай бұрын
Thanks, seems very clear to me, cant wait to try it
@electronics.tinker 2 ай бұрын
Since I made this video, Gowin released version 1.9.9.03 of the educational version of their tools. GOA is less glitchy with this version. I have found it to be useful.
@ΝικΝοκ 2 ай бұрын
Nice.. I use linux and openFPGALoader. I set up the .rao file and burn the design. But when i try to open the oscilloscope i get the error : Can not connect to jtag server... Any idea why this happens? Iuse the tang primer 20K board
@ΝικΝοκ 2 ай бұрын
I figure this out (using chat gpt) i had to rename one file (libz.so.1 to libz.so.1.bak). Now i have another problem... i have made a simple counter 25 bits. After setting the clock(clk) and triger (ther reset signal assigned to button T10 of the board), when i press the auto button and then click the reset button on the board seems like it doesnt trigger anything...The only thing i made different was to select gowin usb cable GWU2K beacause the other option (there are only 2 for tang primer 20k i gwess) gave an error. Any idea why this happen? (i have downloaded the 1.9.9.03 version ). I have tried it many times... Seems like the analizer osc. software can not communicate with the board for some reason
@electronics.tinker 2 ай бұрын
I never got GAO to work on Linux. I think it is somewhat tied to an older version of Ubuntu than I have. You could use "ldd command" to see what shared libraries "command" will use. There are many shared libraries packaged with the Gowin tools on Linux, but maybe Gowin would be better off offering a Linux container or something. Making a program work on all flavors of Linux can be difficult. I prefer to develop on Linux, but I find that the Gowin tools work more smoothly on Windows.
@t1d100 2 ай бұрын
👍👍👍👍👍
@stevenwillis548 2 ай бұрын
I just found this. Nice work. I think the only way to get better disciplining would be to do it completely in HDL. Now, I need to go back through the other videos leading up to this. Again, well done.
@electronics.tinker 2 ай бұрын
Glad you liked it. My thought is that using software is only adding a little latency to reacting. The time measurement is already pure hardware. Given a 1 second measurement period from the GPS, I think a little added reaction latency will have little impact. It might help to run clk_pps faster to reduce measurement jitter, and using the PicoRV32 core makes that more difficult (at least until I can figure out how to do floor planning with the Gowin tools, perhaps).
@danieldsouza3829 2 ай бұрын
@@electronics.tinker It might also be interesting to use the GPS PPS to discipline an external TCXO, instead of the onboard oscillator to reduce jitter. There is a project called the time card from the open compute project which does something similar, but IIRC it's implemented entirely in HDL.
@electronics.tinker 2 ай бұрын
I looked at Time Card. It mentions some interesting parts like a TCXO that has a PPS in signal. It looks like it can adjust itself. Interesting. Thanks for pointing out this project.
@stuartmarinus4810 2 ай бұрын
Greg, thank you for this awesome content and all the effort you've obviously put into making these videos. Having done VHDL many years ago you've inspired me l, just ordered a tang nano 9k. Re the accuracy and convergence algorithm, have you considered interating the 1s timestamp delta over time and then making the correction after that period, starting with 1s, 10s, 100s, then 1000s...this should allow your system to become incrementally more accurate to several significant digits.
@stuartmarinus4810 2 ай бұрын
Apologies for the typo Grug
@electronics.tinker 2 ай бұрын
Yes, I can think of many variations to try, but I am not sure the result will be much better (although faster convergence is certainly possible). The big issue is that the GPS PPS signals are not perfect. I have two GPS receivers and I examined their PPS signals at the same time on my scope. The time between their rising edges varied by as much as 100 ns and was not constant. Maybe I should make a short video about this. A spec sheet from U-Blox suggests that the PPS signals might jitter less than 30ns (usually), but I don't know if this is true for what I have. I have no frequency reference adequate to test this. Someone who has one ought to make a video about using it to test cheap GPS modules! Thanks for your comment.
@ivolol 2 ай бұрын
Could one implement this also in the nano 4k or 1k?
@electronics.tinker 2 ай бұрын
On the Tang Nano 9K, the project uses 37% of the available logic and 47% of the CLS's-- but a lot of that is the PicoRV32 core. I don't have a Tang Nano 4K (or 1K), but I think the 4K has a Cortex M3 hard core. You would have to use it instead of the PicoRV32 soft core. Then, I think there is a good chance it would work. The 1K is too small for the PicoRV32 core (and I think it has no ARM core). So, the only approach would be to use the 1K in conjunction with an external CPU like a Raspberry Pi, Arduino, or ESP32. You could use i2c to read and write the PPS registers. One other concern is speed. clk_pps should be at least 60 MHz. I am not sure what speeds the 1K and 4K would support. I have noticed that higher resource utilization causes the place and route tool to be less likely to achieve a given clock speed. I have no idea about the 1K and 4K in this regard. I also don't know how to use the floorplanner tool to help the place and route, but that's a topic for another day.
@simontillson482 2 ай бұрын
Very useful content, thankyou. You have something of a gift for a concise, but interesting way of demonstrating and explaining these concepts.
@electronics.tinker 2 ай бұрын
Thank you for the very kind comment. I enjoy these technologies and make videos in the hope that others will enjoy them also.
@ivolol 3 ай бұрын
People constantly say "but xxx might not work on a breadboard..." because it seems to be common EE mythical lore. No, nothing can possibly work on a breadboard over 1Mhz! You damn fool! Stop trying! It's a breadboard! Manhattan solder your circuit like a real HAM! ...but a hell of a lot of circuits way above 10Mhz seem to work just fine on a breadboard, with a little attention paid. Of course not as good as perfect on a 4 layer PCB... but damn well good enough to demonstrate thousands of examples.
@electronics.tinker 3 ай бұрын
It's a fair point. Better to try it than just give up. Certainly, I have had success on breadboards way above 1 MHz.
@ivolol 3 ай бұрын
I saw the tang 4K also comes with an M3 coprocessor, would that be ideal for offloading 'non-critical' general compute tasks to, while the FPGA handles the critical functions of a program?
@electronics.tinker 3 ай бұрын
Having a hard core on an FPGA would certainly be interesting. But the 4K is a fairly small FPGA. A Tang Nano 9K with a PicoRV32 soft core likely will have as many resources left over after including the soft core as the 4K has in the first place. But the m3 will likely be faster. The Tang Nano 20K is also nice. After including a PicoRV32 soft core, it will have more resources left over than even the 9K. I think if you are just learning about FPGAs without a specific project in mind (in particular one that needs a core), then the 9K and 20K are good choices. The prices don't appear to be that different. My Tang 20K was $25 from Amazon. That was a good deal. If I could buy a 4K for, say $10, I'd probably get one just to see exactly how the m3 is integrated, though. Basically, they are all good choices in one way or another. By the way, in case you didn't see them, I have several videos that show the use of the PicoRV32 soft core. I like using the version straight from github rather than using the encrypted IP block available directly in the Gowin IDE.
@ivolol 7 күн бұрын
@@electronics.tinker Thanks for your explanation and channel!
@martinmartinmartin2996 3 ай бұрын
Analysis of Wen Bridge Osc lamp stability ; difficult math anaysis Oliver, B.M. Ef{ect o£JY - Circuit Nonlinearity on i9~ Amplitude Stab~fity of R.C. Oseillators, Hewlett Packard Journal, April June 1960, Volume 11, pp 1-8.
@jamesross3939 3 ай бұрын
Very educational and well done explanation for us newbies. Good work! And thanks for the GitHub code!
@ВячеславПопов-ц3ж 3 ай бұрын
Hello. Have you tried synthesizing a PicoRV32 microprocessor on a TangNano-20K board according to the Gowin PicoRV32 Quick Design manual Reference Manual IPUG915-1.3 with downloading the program from SPI-Flash?
@electronics.tinker 3 ай бұрын
No. I looked at it but decided that using the picorv32 direct from its author's git (github.com/YosysHQ/picorv32) was so much more transparent. It works the same way on the Tang Nano 20K. See my video on PicoRV32 interrupts. The github for it supports both the 9K and the 20K. Best wishes.
@quangthango0o 3 ай бұрын
Thank you very much for sharing. Very appreciated your work.
@electronics.tinker 3 ай бұрын
I am happy to hear that you found the video useful.
@durka8892 3 ай бұрын
Hello, I'm new to the world of FPGAs, and I have a question. The TangNano 9K has a 27 MHz crystal oscillator, but I can generate a higher clock using the PLL. My question is: what is the maximum frequency I can achieve? At 2:05 in the video, a table shows 1200 MHz-is that correct? But at 0:55, it mentions a 200 MHz clock. I'm a bit confused about this part. Thank you for the video.
@electronics.tinker 3 ай бұрын
It's a good question. In general, you have to dig through and understand technical documentation available on the Gowin website to answer this type of question. The FPGA on the 9K is a GW1NR-9 with speed (and temperature) grade C6/I5. I am looking at document "GW1NR series of FPGA Products Data Sheet", version DS117-3.0E. Its Table 3-21 answers the question saying the max valid CLKOUT from rPLL is 600 MHz (and the min is 3.125 MHz). The table also gives limits on intermediate clocks that are involved. A separate document "Gowin Clock User Guide UG286" explains those intermediate clocks and how they form CLKCOUT. It's not easy stuff, and there are many docs to shift though. And then, you need a design that can actually use a 600 MHz clock while still meeting setup and hold times. I doubt there is much you can do on the GW1NR at such a high speed. It's why you have to look at the timing report that the tools generate to see if your design meets timing. There are still many aspects of this that I cannot understand from Gowin's docs. But I know that red text in the timing report means "bad!" Good luck with you FPGA.
@michaellablanc6886 4 ай бұрын
Great companion video to your earlier coverage of the down converter / receiver circuit! Thanks for sharing this information in such an approachable manner. Is there any chance you have a GitHub location with the schematic or Lspice file? Thanks again for this really outstanding content.
@electronics.tinker 4 ай бұрын
Glad you enjoyed it and good idea. I created repo called grug_misc_projects on github under user grughuhler. Let's see if KZbin lets me post a link. github.com/grughuhler/grug_misc_projects
@michaellablanc6886 4 ай бұрын
Thank you so much for uploading those files. I am working on an order to Digikey so I can attempt to recreate what you demonstrated. Would you please confirm the values of R11-R14 and C6-C9? The schematic says {R} and {C}. Thank you again for providing this content.
@electronics.tinker 4 ай бұрын
Yes, my mistake. I deleted the LTSpice parameter without adding a note. C=10nF and R=220 Ohms. Those values are interesting to play with. I am unsure how to best select them. I'll fix the picture on the github later.
@NackDSP 4 ай бұрын
This is exactly what I was looking for. Thanks for posting. I have had a Pi sitting around for a few years. Soon it will be a radio.
@electronics.tinker 4 ай бұрын
I'm glad you found the video interesting. Best wishes with your experiment.
@t1d100 4 ай бұрын
Great video! Important point for use and coding. Thank you.
@phillipneal8194 4 ай бұрын
Thank you for the video. Can this Tang Nano 20k generate sine waves at HF (20 meter) frequencies ? Just in case I want to build a well filtered beacon...just in case.
@electronics.tinker 4 ай бұрын
The FPGA on the Tang Nano 20K (and the 9K) is a digital only device so its output pins are either high or low-- so it can produce square waves but not (directly) sine waves. If all you want is a square wave clock generator, check out a part called si5351. John Hawkes made a youtube video about using one of these as an LO sine wave generator by filtering its output. The video is called "SI5351 Clock Gen as Radio Local Oscillator in Old Radios".
@phillipneal8194 4 ай бұрын
@@electronics.tinker Thank you for your reply. I check out Hawkes video. I put a low pass filter into the output from the Si5351a and that knocked everything down a bit. However, the signal was knocked down below 0 db. So now I think I have to amplify and filter the results of the amplifier as well. ... So it goes.
@phillipneal8194 4 ай бұрын
Excellenet presentation/video. Thank you. I gotta think about this. I hate winding coils but I might need to for the filters.
@electronics.tinker 4 ай бұрын
I agree that winding toroids would be the best way to get and tune inductors for RF filters. I suppose it would be interesting to see how well a breadboard RF filters could work at low frequencies like 1 MHz. One could compare its response to what a filter designer web site predicts. I'm glad you enjoyed the video.
@dl8cy 4 ай бұрын
Nice explanation and interesting examples, thank you for sharing your knowledge and greetings from Germany, 73 de DL8CY
@electronics.tinker 4 ай бұрын
Thank you. It's great to hear from someone in Germany.
@JonesMiller45 4 ай бұрын
Can you make a video on how to create a RISC-V architecture on this FPGA step-by-step? That would be awesome!
@electronics.tinker 4 ай бұрын
Do you mean implement a RISC-V soft core from scratch? That would be a big job. And others have already done it. See the litex project or the PicoRV32 core. I made a whole series of videos about using the PicoRV32 RISC-V core to implement a simple SoC. There is a playlist called PicoRV32 on my channel. The videos contain links to github with complete projects including some simple software. There are multiple branches on the github as I added stuff from video to video.