Arduino, Etherkit, OpenBeacon Mini

A New Arduino Library Appears!

Since I’m waiting for circuit boards for OpenBeacon Mini to arrive, I want to keep the waiting time as productive as possible, so I’ve been working on the firmware. Specifically, one of my recent goals was to factor all of the modulation code out of the spaghetti mess that is the current state of the OpenBeacon 2 firmware (which is my starting point for OpenBeacon Mini).

In that vein, today I managed to finish up work on release v1.0.0 of the Etherkit Morse Arduino library. The majority of the coding work was done during my last few Twitch livestreams, so other than tweaking and cleaning up the code, most of the work today consisted of creating documentation and getting the repository in shape to be a proper Arduino library.

The way that this library functions is quite simple. Since timing in Morse code sending is critical, the end user of the library is required to provide a function that calls the library’s update method every one millisecond. This type of interface was chosen so that the library can be platform agnostic (since Arduinos come with different microcontrollers which have totally different timer functions). An transmit output pin and speed in words per minute is specified when the class in instantiated, and then all you have to do is call the class’s send method to send Morse code on the digital output pin. Alternately, you can have your sketch poll the class’s tx variable and act on it accordingly. Pretty easy stuff.

I’ve put in a request for the library to be included in the official Arduino Library Manager, so if you want to give it a try, wait a day or so for it to be listed there. If you really can’t wait, there are instructions in the README about how to manually install it. Hopefully you find it useful, and as always, please file your bug reports and suggestions for improvements as an issue on GitHub. Thanks!

Etherkit, OpenBeacon Mini

OpenBeacon Mini Proto PCBs On The Way

If you watched my previous Twitch stream, you may have seen that I completed the layout of the first PCB spin of OpenBeacon Mini. Today I ordered the PCBs from DirtyPCBs, along with boards for my low-pass filter module, and more Empyrean boards in anticipation of wider beta testing soon.

I wanted to get these boards to the fab before we started to run into the wall of Chinese New Year (which I seem to do nearly every year). I think I’ve ordered them plenty early, and even paid a bit extra for express shipping, so hopefully they’ll be in-hand around the beginning of February.

In the mean time, I’ll be working on some more coding for the OpenBeacon Mini on my Twitch stream and some other ancillary stuff while I’m waiting for the boards to arrive. Stay tuned for further news on this blog.

Empyrean, Etherkit

OpenBeacon Mini Proto PCB Layout Complete


I managed to finish the layout of the OpenBeacon Mini prototype PCB in KiCad this evening while livestreaming on Twitch. A 3D rendering from KiCad is above. It looks about how I sketched it out and wasn’t too nasty to route, so I got that going for me. So I’ll get on order off to the PCB fab soon. I’d like to get some PCBs completed before Chinese New Year, so I can’t delay very long.

While I’m waiting for my PCBs to be manufactured, there’s still plenty to do. Twitch streaming is kind of nerve-wracking for me yet kind of fun, so I plan to do more. I have a little more gear on the way that will allow me to also Twitch stream from my workbench, so that you can spy over my shoulder there as well. I even have a USB webcam for my microscope so I’ll be able to connect that to Twitch for your viewing pleasure. Stop by sometime on the livestream and chat me up.

Etherkit, Twitch

Twitch Success

I’m happy to report that I managed to pull off my first Twitch stream today, and even got a handful of viewers. There were some initial problems, as I was trying to stream at 1080p, but my wifi connection from my office just couldn’t give enough bandwidth for that to work. After restarting with the stream set to 720p, people were actually able to see my stream. Today’s work was on OpenBeacon Mini. I assigned footprints to the netlist and made a first pass layout of the PCB. I do intend to stream again soon, perhaps even tomorrow. Hopefully I’ll be able to finish the PCB layout on the next session.

Find my Twitch channel here and be sure to follow me in order to get notifications, thanks!

Empyrean, Etherkit, Meta

The Road Forward

Per my last blog post, I’ve completely deleted my Patreon account. Those days are over and are not coming back. I’m still not sure what will replace it, or if anything will. It is already difficult for me to ask for money in return for mostly intangible benefits. Losing the Patreon monthly income will hurt a bit, as that was the funds I was using to pay for OpenBeacon Mini (and other project) development. I only sell a modest amount of the Si5351A Breakout Boards via Etherkit; basically just enough to pay for keeping the lights on there for now.

So allow me to start using this blog again for what I was doing on Patreon, sans the locked content.

OpenBeacon Mini has a schematic finished and I’m just about ready to lay out the PCB. Empyrean (my Arduino Zero derivative) testing is going to be delayed a bit while I figure out how to fund the beta batch. Those two projects are going to be my main focus and I hope to be going into release with both of them by Q1 2018. Further down the line, I don’t want to speculate too much, but I’ll probably tidy up and finish some half-finished smaller boards that I want to add to my Etherkit lineup in order to fill out the catalog with some more RF products.

I’ll work on ramping up the blogging here, using my own site much as I was using Patreon: to post smaller updates about project progress. I always felt the need to make more substantial posts here, which often deterred me from writing. I believe that was a mistake. Expect to see more content in line with microblogging here in the future. Thanks for hanging in there.