WSPRing for a bit on 10 meters today with OpenBeacon Mini. pic.twitter.com/7Y6ehMmUN0
— Jason Milldrum (@NT7S) May 31, 2018
It’s time for a brief update on how things are going with OpenBeacon Mini, the successor to the OpenBeacon MEPT that’s been a long time in the making. For those who are unfamiliar with the new project, allow me to give a very brief overview of its capabilities. The OpenBeacon Mini is an automated transmitter for amateur radio operators that allows for automated transmission of messages using propagation study modes such as WSPR and QRSS, along with many of the other JT modes and CW as well. The carrier is generated by a Si5351A clock generator IC which is fed with a TCXO reference clock for frequency stability. Low-pass filter plug-in band modules allow operation on any single band from 630 meters to 2 meters. The OpenBeacon Mini detects which band module is inserted and sets the frequency accordingly, making band changes as easy was swapping out a plug-in module. The power and a data connection is provided from a USB micro B connection to any PC. Accurate time synchronization is accomplished through this connection, as long as the PC has time set through NTP. The user interface is a 128 x 32 px OLED display and 7 pushbuttons. As always with Etherkit products, all firmware, hardware design files, and and software is open source. Extra pins from the microcontroller and extra clock ports from the Si5351 are broken out for use in experimentation and expansion.
Something like this project has been on the back burner for a long time, and is finally now able to see the light. I intend to launch this as a crowdfunded product at the same time as my Empyrean microcontroller, which is at the heart of the OpenBeacon Mini. The Empyrean is an Arduino Zero derivative in the form factor of small DIP module perfect for breadboarding. I’ll have more about this initiative to post on the blog in the near future.
My first beta tester, LA3PNA, recently received his OpenBeacon Mini and had a chance to put it on a NVIS antenna for a few hours on 60 and 20 meters. As you can see from below, he received plentiful WSPR spots in that short amount of on-the-air testing.
— Thomas S Knutsen (@la3pna) June 6, 2018
Here's the map since that link was a little broken for me: pic.twitter.com/1wn9aVWPbV
— Jason Milldrum (@NT7S) June 6, 2018
I have another early beta tester working on getting his OpenBeacon Mini on the air soon as well. I am looking at getting one more early beta tester going with this PCB spin, just so that I can be very sure that the next PCB spin will iron out all of the kinks. If you are familiar with MEPTs, using the Arduino environment to compile and load firmware, and don’t mind a little bit of firmware roughness, I’d love to have you on board. Send me an email to milldrum at gmail dot com to let me know you’re interested.
This weekend, I plan to get OpenBeacon Mini going on 6 meters in order to see how it performs there. It should be a perfect time, since it’s also the weekend for the ARRL VHF Contest. Keep an eye on my Twitter account and this blog for further updates on this project.
Photos taken here over the last few weeks.
I know it’s been quiet on the blog front. It’s because I’ve been working through some tricky issues with OpenBeacon Mini firmware. A long story, but the gist of it is that a timer subtlety was causing some hard-to-troubleshoot problems causing inconsistent transmit timing for WSPR. I’ve finally overcome that particular family of bugs, and now have the transmit working reliably. As you can see, I’ve put OpenBeacon Mini on the air for the first time and it’s receiving spots. Now that I’ve confirmed that the basic functionality is working, I need to fill out a few more firmware features and then actual beta testing can start, which shouldn’t be very long now.
On another note, I’ve also been doing more PC and PC parts hustling on OfferUp in order to fund an upgrade to my main workstation. I managed to snag a Ryzen 5 1600 for a good price at $159 at Fry’s, since the new Ryzen refresh CPUs were just released. I’ve been using it for a few weeks now and it’s a fantastic processor. It also handles OBS much better than my old i3, so when I do get back into streaming on a more regular basis, my stream quality should be even better yet. From my testing, I should now be able to push out 1080p 60 FPS video to Twitch with no problem now.
Stay tuned, as the news around here should pick up again.
Back in the day, I used to be a PC build enthusiast, but as you can imagine things like starting a family can cause you to put hobbies like that on the back burner. So over the last 10 years or so, I’ve only minimally kept up with what has been going on in the PC world, and also have not put a lot of effort into my own PC setup here. But the old bug recently decided to bite me again, so I’ve been ramping back into the world of PC building and upgrading (especially budget acquisitions).
Before I go further let me give you a quick description of my current office PC setup. As some of you probably know, I’m primarily a Linux aficionado, so my main work PC is a Linux Mint 18.3 box based on an Intel Core i3-3240 with 16 GB of DDR3 RAM, which is getting a bit long in the tooth. Sometimes, I still need to run Windows programs (and I occasionally like to game on my PC), so I also fairly recently built a budget Win 10 PC from a Xeon X5460 (a decade-old quad core CPU) that I modded to work in a consumer-grade LGA775 motherboard, along with 8 GB of DDR3. That system was decent, but being based on a 10-year old processor, was also prone to showing its age at times.
I’d say that the rekindling of my interest in PC building as a hobby coincided with the release of AMD’s Zen architecture processors about a year ago, which is the first time that AMD has been competitive with Intel in performance for quite a few years. So as I have been watching how the first-generation Ryzen CPUs stack up against Intel’s offering, I have been more and more curious to try one. I used to be a pretty big AMD fan back in the Athlon 64 days, but I won’t deny that their later stumbles made me lose a lot of interest in them.
What really put me over the top was the more recent release of the two new Raven Ridge APUs (CPU plus integrated GPU): the Ryzen 3 2200G and Ryzen 5 2400G. The former being a 4 core/4 thread CPU for $99 and the latter 4C/8T for $169. Each has a Vega graphics core on the die; the 2200G having 8 compute units and the 2400G with 11 compute units. From looking at reviews of these APUs, it seemed that the processors in them were quite capable, and that for the first time ever, the integrated graphics could play quite a few modern games at 1080p with modest graphical settings and easily play almost any game at 720p. The real value sweet spot of the two seems to be the 2200G, which has a lot of performance for a $99 part.
So I decided that I wanted to build a Ryzen 3 2200G system to replace my X5460 Win10 box. And I wasn’t even going to use the integrated graphics at this point, since I also recently picked up a R9 270X for the amazing price of $40 on OfferUp. After selling off some spare gear on OfferUp and my For Sale page, I made enough money to get the parts that I needed. I used Camel Camel Camel to snag the ASRock AB350 Pro4 for $75, took advantage of an eBay sitewide 20% off coupon to grab an 8 GB kit of G.Skill F4-2800C16-4GVR DDR4 RAM for about $75, the 2200G for the MSRP of $99, and a Deep Cool GAMMAX 300 CPU cooler for $13 since I intended to overclock.
The build was very smooth, although I didn’t take a photo of the final result because I ended up using the only ATX case that I had on hand, which is kind of old and doesn’t have any cable management features, so it looks like a bit of a mess inside. Although I heard that the stock cooler that comes with the Ryzen isn’t bad, I wanted to have something better on hand so I could overclock without worry. I can say that while the GAMMAX 300 isn’t a total beast it does a pretty good job for the price. With the AB350 Pro4, I was able to overclock the CPU to 3.9 GHz (from stock 3.5 GHz) with no problems at all; as easily as tweaking the CPU core voltage and setting the frequency to 3.9 GHz in the UEFI. My CPU temperatures never got above 60°C in Cinebench, and maxed out at 70°C in Prime95. I also was able to easily overclock my kit of 2800 MHz DDR4 RAM to 3200 MHz by bumping up the RAM voltage just a little bit, which is really nice because the performance of these APUs are highly tied to the RAM speed. Without a doubt the easiest overclocking I’ve ever tried. The only minor hiccup that I encountered was that the Raven Ridge APUs take a special driver package that is different from the standard AMD unified drivers, so be aware of that if you ever build your own.
Next, I curious to see how the new rig would compare performance-wise with my old PC. After getting my overclock dialed in, I ran Cinebench R15 and got a score of 611, which is a fair bit better than the 550 score of the stock 2200G clock and nearly double the score of my old system, which was about 330.
I also noticed that the CPU-Z utility also has a benchmarking tool built into it, so I decided to give that a try as well. It gave my rig a single-thread score of 447 and a multi-thread score of 1783. You can see in the graph above that this score puts it near the top of the list of 4-core CPUs in their database, putting it on par with the last (7th) generation Intel Core i5s. It also whips the stock Ryzen 3 1200, which now looks to be a totally obsolete part since the Ryzen 3 2200G is $15 MSRP cheaper! (Yes, I know that most likely the R3 1200 in that chart is not overclocked, but I doubt it could get to my R3 2200G score even if it were.)
Overall I’ve been very impressed with my new system, and happy with my modest investment in it. It’s great to see a competitive AMD once again forcing Intel to compete instead of sandbagging like it has done for the last few years. I do plan to eventually convert my main Linux rig to a Ryzen system as well, hopefully in the near future. A hearty thumbs up all around from me.
A huge thank you to everyone who made the effort to try the Brave browser via my referral link. I ended up getting significantly more BAT than I expected from it. Given the current exchange rate of about $0.22, that’s a nice bit of funding for my work. I very much appreciate all of you who gave it a try. Hopefully you’ll continue to find it useful and will like the entirely new funding paradigm it brings to the Internet.
An extra shout-out to those who are funding the blog in an ongoing basis through Brave Payments. You’re awesome! I feel a lot better about this than using Patreon.
On a side note, OpenBeacon Mini firmware is just about in a state where I can send some initial units out for testing. I’ll have more on that soon. My next blog post will be about some interesting PC upgrades. That should be dropping quite soon. Cheers!
It’s easy enough to give other people directives, but not so much to live up to them. I thought I had managed to dodge the latest round of the upper respiratory viral infection that settled into our house, but I was wrong. The last five days have been riddled with a lot of coughing and congestion. Ugh.
At least now I seem to be on the rebound again, so I can get back to doing some productive work now that I’m back to getting some semblance of a full night of sleep and some of the mental cloudiness is starting to lift. I know I’ve failed to do so the last few times I’ve mentioned a Twitch stream, but I think there’s a good chance I’ll actually be able to do it this Saturday, even if with a scratchy voice. Stay tuned for further info.
A quick note to let you know that courtesy of David Mills, G7UVW, the Etherkit Si5351 Arduino library has now been ported to the Mbed platform. He reports that it seems to be behaving the same as the Arduino library, so if you’re an Mbed user, definitely go check it out. I was giving some consideration to making this port, but I’ve got so much other stuff on my plate at the moment that I just hadn’t got around to it yet.
Three cheers to David for this! Huzzah! Huzzah! Huzzah!
Guess what? I realized that I had a bunch of microcontroller dev boards and such that I was probably never going to use, so I figured it would be time to put them up for sale, along with some other miscellaneous electronics stuff as well.
Please peruse my listing on my For Sale page!
Also, for a limited time, I’ve decided to bring back my old EtherProg AVR programmer, this time as an assembled product, lovingly built and tested by me. Only $9 plus shipping! Cheap!
As previously mentioned, I’ve been experimenting with using the combination of the Brave browser and its advertising partner program to bring in some extra funding for my work (and replace what I was getting from Patreon). You can see from my last blog post on the topic that the results have already been positive.
Now comes word of a new referral program to try to convince more folks to use the Brave browser. If you download and use the Brave browser via my referral link, I can score some BAT from Brave, which helps to fund my work here.
The thing is, I do think using Brave is quite beneficial to you as a user. It’s based on the Chromium engine and is quite snappy. Ad and tracker blocking is baked into the cake by default. It also has a nice feature of upgrading many non-encrypted connections to HTTPS. And I do believe that the Basic Attention Token model of funding is a much more sane and honest way to do things compared to the current model of ads, trackers, spyware, hidden cryptocoin miners, and general trickery that a lot of sites use. So I like supporting a paradigm shift in this field.
The caveat is that Brave is still in what I would consider a beta state; which I would define to mean that it mostly works as it should but you might run into an odd bug here or there. But in my experience it is pretty stable and mature enough to use regularly. If you have even a bit of computer savvy, I think you’ll be fine.
I don’t know if this will be the wave of the future, but I think if it’s not than something similar will be. Give it a try and see what you think.