This blog was created so I could share the little projects that have made my life easier (or more interesting 😉 ). I hope you have fun looking around!


  1. #1 by Cody Miller on December 9, 2010 - 12:55 pm

    Hi we would love to feature your last RF Transceiver project on our website. Would you be willing to work with us in doing so?


  2. #2 by admin on December 9, 2010 - 1:39 pm

    I sent you an email.

  3. #3 by Diego on June 24, 2011 - 8:18 am


    I’m studying engineering and I would like to test the MRF49XA for a project, but I don’t want to make a some board just for that, because the cost is very expensive.
    Do you sell these cards? Are you interested in selling two units?

  4. #4 by hpux735 on June 24, 2011 - 8:29 am

    I don’t have any way to sell them at the moment. It mostly depends on your timeframe. It’s also possible for you to make them yourself, as I have the PCB design as a public design on BatchPCB. If you are unable to make it yourself and don’t mind waiting a month for them, we can work something out.

  5. #5 by Ken Keiter on February 8, 2012 - 7:10 pm


    I’m wondering if you do contract electronic design work? We have a project which might be of interest to you. I couldn’t find your contact information elsewhere, so this seemed the best way to get your attention.

    Thanks for your time!

  6. #6 by hpux735 on February 9, 2012 - 8:09 am

    In general, yes. However, I’m in the last year of my Ph.D., so I have no time at all at the moment. Thanks for asking…

  7. #7 by Jared on February 13, 2012 - 7:19 pm

    I have some questions pertaining to a wireless jeopardy system that I am attempting to construct. If you would be willing to help in this please message me.

  8. #8 by hpux735 on February 13, 2012 - 7:57 pm

    Sure, lay ’em on me.

  9. #9 by Tony on July 22, 2012 - 4:31 pm

    Hi William,
    Do you have a contact email for future reference?
    Just got Cocoa-Radio up and running on my Mac. Will start looking into the code to see if I could work with it

  10. #10 by Peter on January 2, 2013 - 10:10 am

    Hi Bill and happy New Year!
    I was happy to discover cocoa radio and wanted to use it with my RTL stick, however the program starts, displays a messages that it couldn’t open the RTL stick, and promptly exits.
    As it exits I didn’t know what to do or try to repair, if this was possible.
    I am using a Macbook pro, OS is 10.7, Lion.
    The stick is a RTLDVB-T plus FM stick with the RTL2832U chip and the RafaelMicro receiver.
    Thanks for any help,

  11. #11 by hpux735 on January 2, 2013 - 10:28 am


    Can you provide some information from the system profiler thing? I just need to verify that the USB device is being detected by the OS. Also, what is the exact model number of the tuner chip?

  12. #12 by Jeff on July 18, 2013 - 10:49 am

    William, can I get you to take a detailed, close-up, picture of the CM-5 light panel? I’m building a replica and after scouring the internet I can’t find any photos detailed enough to show what’s going on in there. I can see that there appears to be white graduations for each set of 8 LEDs and something written under each set but can’t make it out in any pictures available on the web. I thought I would take a shot and ask for your help. Driving the 500 miles to the National Cryptographic Museum in Maryland isn’t really an option right now. –Thanks, Jeff

  13. #13 by hpux735 on July 18, 2013 - 12:22 pm

    Sure, I can do that. I’ll try to remember to do that tonight.

  14. #14 by hpux735 on July 19, 2013 - 8:06 pm

    I updated the original CM-5 post with a close-up image of the LED panel and its silkscreen. I hope it helps.

  15. #15 by Jeff on July 23, 2013 - 3:27 am

    William, the picture is perfect. Thanks for letting me take a bit of your valuable time.

  16. #16 by hpux735 on July 23, 2013 - 8:40 am

    There is something important to notice, depending on how much you care about authenticity. Notice that the bottom half of the LEDs look different? There is a mask of black paint on the inside of the plexi, and the bottom few banks of LEDs are completely masked out. The first bank that isn’t covered is node 45. You can see evidence of this in a few of the photos. Even though they’re masked-out, there are still LEDs under there.

  17. #17 by Jeff on July 24, 2013 - 5:48 am

    I wonder if that particular CM-5 only had 45 nodes in that cabinet.

    A few more questions…

    In the pictures I’ve seen the LEDs look rectangular. Are they indeed rectangle LEDs or are they round?

    Are the single digit nodes labeled as 01, 02, 03 or 1, 2, 3?

  18. #18 by hpux735 on July 24, 2013 - 7:49 am

    This CM-5 was a full load. The interesting thing is that nodes 2-45 are blacked out, nodes 46-255 aren’t. Also, I just noticed that there isn’t even a place for nodes 0 and 1.

    The LEDs are round and 5mm. It’s the masking between rows that makes them look rectangular.

    The single-digit nodes do not have a leading zero.

  19. #19 by Richard on April 13, 2014 - 9:27 am


    I saw your article about the helical antenna. I was given one of these, and happen to also have an Ensemble II receiver. How do use this setup to receive weather satellite data?


  20. #20 by hpux735 on April 13, 2014 - 11:12 am

    My article about that is here:

    I’ll probably depend on whether you using windows, linux or mac. You’ll need to use GNURadio, SDR#, DSP Radio; some kind of “virtual audio cable”; and WXtoImg or WXAPT to decode the audio.

    I’m planning a post about using the RTLSDR dongles for weather satellite images, too: https://twitter.com/hpux735/status/452674180970864641

  21. #21 by Jack_Andal on December 8, 2014 - 10:35 pm

    Where did you find the stickers for that Cyvasse set you made?

  22. #22 by hpux735 on December 9, 2014 - 1:06 pm

    Do you mean the bulk sticker material? I don’t remember the exact product, I think it was transparent address labels by Avery. I designed the icons on my computer and printed them onto the address labels. Then, I put them on the tiles and cut around the edges. If you use a bone-folder or something like it to press the sticker it’ll be almost clear. Also, when you paint the sticker it makes it appear almost completely transparent.

  23. #23 by Jack_Andal on December 11, 2014 - 10:17 am

    @ hpux735
    Thanks for the reply.
    Yes, your process on the set is a streamlined one; I really like your lexan idea. I’m trying to make a set of my own but I don’t think I could reproduce such great sticker pieces. Would it be too much if you would send me the designs?
    You’d make my year.
    No joke.

  24. #24 by hpux735 on December 11, 2014 - 2:29 pm

    I looked all around, and I found most of the artwork, but some of it’s missing. I can’t find the rabble, horses, or crossbow artwork. I’m pretty sure I just google image searched for those anyway… I sent it to the email address you used with the comment. Cheers.

  25. #25 by Jack_Andal on December 11, 2014 - 9:53 pm

    @ hpux735

    I absolutely appreciate it.
    For your time, I’ll post this; it’s streamlined rules after many playtests. And they’re not too hard to look at either.
    Thanks again.

  26. #26 by Bob Madonna on April 27, 2016 - 1:09 pm

    Thanks for all the great directions on getting swift and foundation running on BBB or Pi.

    I’ve been trying to follow your directions on running Swift on a BBB which has
    Ubuntu for ARMv7 installed but I keep getting this error:

    “-bash: ./swift: cannot execute binary file: Exec format error”

    Any suggestions?



  27. #27 by hpux735 on April 27, 2016 - 5:05 pm

    I don’t really have enough information. I don’t know why you’re making binaries that are the wrong type. What operating system are you using? What version of the raspi? Those instructions might be out of date.

  28. #28 by Bob Madonna on April 28, 2016 - 5:17 am

    @Bob Madonna
    Sorry for the lack of detail.

    I’m running Ubuntu 14.04 on a Beagle Bone Black

    I did not build the binary.

    I downloaded it from this link thinking it was built for a 32 bit Beagle Bone Black running ubuntu.


    I did not realize that some of the targets on this page were 64 bit machines.

    I’ve been running Swift on this board for several months with a Debian Jessie OS installed. I decided to try Swift out on a Ubuntu version.

    FYI: I tried to send a comment from the link above and I repeatedly got a server error. I had to go to your “About” tab to send this comment.

    Thanks again for your site I’m a big Swift fan.

    Are you available for consulting by any chance?


  29. #29 by hpux735 on May 3, 2016 - 10:38 am

    Hi Bob,

    Sorry to have taken so long to reply, I’ve been fairly busy recently.

    Thanks for catching the error in my link on that page. I’ve renamed the arm-based swift builds on my site to swift-armv7.tar.gz as I’ve used the swift.tar.gz for x86 recently. That would explain the incompatibility with the binary! If you’re interested in the 64-bit version (it’s still rather buggy, there’s a problem with the linker on 64-bit) there is also a swift-arm64.tar.gz.

    That server error is very strange. I’m not much of a web person ;p

    I am available for consulting if it makes sense for both of us. Please send me an email at william@housedillon.com to discuss. 🙂


  30. #30 by Raymond McNab on November 27, 2016 - 9:54 pm

    I am using you brilliant little Fontscape 1.3 and would very much like to be able to print out a list of my fonts to keep in a reference book. Is there any way to print from Fontscape?


  31. #31 by hpux735 on November 28, 2016 - 7:19 am

    Hi! Thanks for your kind words, and I’m glad that you’re enjoying it.

    You’ve probably noticed that printing from the app doesn’t work, but what does is to copy and paste from that window. If you select-all and copy then open TextEdit or Pages, or something else, you can paste into it and the formatting will follow. I’ve tried this on TextEdit and it worked.

    Give it a try and let me know!

  32. #32 by Raymond McNab on November 28, 2016 - 3:46 pm

    Yes it works! Thanks for the tip to print a catalogue of my fonts. Computer runs a little slow with all that in memory but at last I have a printed copy.

    Brilliant, thanks for your incredible little app.

  33. #33 by Amy on May 17, 2017 - 7:51 am

    I have just downloaded the Fontscape app from the Apple Store. Can you please provide me with step by step instructions on how to use the Fontscape app within Microsoft Word? Specifically the two Pepper fonts.

    Thank you

  34. #34 by hpux735 on May 17, 2017 - 1:49 pm

    You can copy-and paste from the preview window, or just pick the font in Word like normal.

  35. #35 by Brad Snelling on July 3, 2018 - 1:45 pm

    I am interested doing some continued work with VOR and ILS signal processing using SDR. If possible, could you please contact me? I will be visiting Corvallis mid-July if you are still in that area. Thanks so much – Brad

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