What have I been doing?

Well, it is pretty hard to answer.

No matter how tough you are, the pandemic hit us hard. I was able to manage the two years after I dived into work.
I literally worked as many hours as I worked back when I just started my career. I was thrilled and had an exciting drive. The project I was working on needed many features and during business hours, I rushed to create endpoints and features; by night, I improved tests and documentation.

Soon, stress and panic attacks took over the excitement and drive I had while I coded. One day I simply fell during the shower due to dizziness, and that made me reevaluate the whole situation.
It turned out impossible to dedicate myself to personal projects or any activity I love. At that point, I struggled to do the basics.
Don’t get me wrong, I loved that company and I am completely grateful for such an opportunity. I spent 6 years of my life there and to be honest, I never completed 2 years in a company before because there was always a better open position. I learned a lot and worked with skilled people that were always willing to share knowledge and experience.

The company and the projects suffered a few changes. We moved all our codebase from Azure Functions NodeJS to C#/NetCore6. It’s supposed to be a great learning experience and growth opportunity. But to me, it simply wasn’t.
The stress and panic attacks turned into a burnout and I, for the first time, had no joy in coding. My productivity dropped drastically and I had a hard time keeping focus or finishing my deliverables. It was frustrating to see myself acting like that, I really wanted to be a good employee and programmer.

So I took the decision to check new opportunities, to answer every recruiter on LinkedIn, and to apply to great companies. My mistake was not taking a period for myself but starting to enroll in many recruitment processes. I started a trial process in a company that really knows how to treat its staff, but I messed up… I messed up really hard because I still couldn’t focus and work like before.

Fortunately, I was accepted by another company. They really liked my experience, knowledge, and way to solve problems. It’s been a great experience so far and the level of pressure, stress, and work volume have been completely bearable for my well-being. Well, let’s not forget that 20 days into the new company I got appendicitis and it burst. Maybe it’s my body’s response to everything I went through before, maybe it’s just a coincidence. But I am getting better every day.

I started plentiful projects and/or activities in the past three to four years, some I had to drop, and some I wasn’t motivated to keep on. I am going to comment on a few:

VST Plugin – Boss HM2

I created a rough VST plugin effect simulating the infamous Boss HM-2, known for its chainsaw sound and notorious for the old-school Swedish death metal guitar tone. It was created using iPlug2 and faust language and consisted basically of an asymmetric clipping stage followed by three parametric equalizer filters(one for the low knob and two for the high knob). It did the job surprisingly quite well, but nothing different than what could be achieved using any good distortion plugin followed by any equalizer plugin.

For my very first project, it was fine, but my goal was to model the effect after the real circuit and soon I was dealing with quadratic functions, filter topologies, frequency response functions, thick signal processing books, and many things I wasn’t ready to deal with. At least at that moment and with the volume of work I was dealing back then.

It was a fun experience and I definitely plan to go back to it, but I still need to understand a lot of signal processing to be able to model the circuit schematic to the proper equations and functions.

Poetry

One day I was just laying down in bed and I had a moment where the words started coming to my mind. I got up and started writing non-stop until I finished my (very first) poem.

I really don’t know how to explain how it happened, maybe it was inspiration? I don’t know. It happened a few times more and now I am trying to write on a regular basis, even if it’s not something that I find good… I can’t rely on inspiration every time.

Vermicomposting

Since I have a couple of birds, there is always a few fruit leftovers that they reject during the day and I also deal with cardboard and paper bags from services like Amazon. Considering this, I decided to start a worm farm.

There is not much to say, they kinda do all the work for me. But it is really exciting to research and understand more about these detritivorous creatures… and obviously reduce my waste output

Gardening

After these years, I ended up moving to an apartment with an external area and, combined with the worms mentioned earlier, sounded like the perfect environment to grow some crops. I have quite a few pots with different herbs and chili peppers, I am still considering getting bigger pots to have larger plants.

Compared to my usual activities, it’s something completely different to have small interactions and see the changes after some days or weeks.

Fermenting

I started and brew a few batches of Kombucha during the pandemic. It worked well and I am definitely revisiting it soon. Recently I also did my own hot sauce, even bottled it into small glass bottles to give it a gift to friends. Oh… did I mention I grew the chilies?

URL Shortening and PasteBin clone

As a way to learn and keep myself motivated, I like to start personal projects using languages and technologies different from what I use while working. Since I never used MongoDB(or any NoSQL), I decided to do a couple of simple projects.

With ExpressJS and MongoDB I created my own version of Pastebin and URL shorter for personal use.

What’s up next?

Well… I am planning to keep track of my new or ongoing activities and projects here. It’s quite abandoned right now, to be honest.

I feel quite insecure to open the source of some projects, like the VST or the ExpressJS/MongoDB one, at least when working with something I am still learning and I don’t dominate yet. It feels like I am showing all my mistakes to the world.
But well… I am starting a new project with Rust and SFML, my goal is to document (and commit) every step and hopefully start new projects after the first one.

So please, unlike the B string of my guitar: stay tuned!

Fixing broken chinese Ammoon Looper Pedal

Information compatible with:

  • Harley Benton Mini Looper
  • FAME Looper * Rowin LEF-332
  • Donner Looper
  • Ammoon AP-09 nano looper

I bought this little fella after I saw it listed as broken for a really low price, considering that I could make it work after updating its firmware.
The provided USB cable was faulty and I replaced it with a working one and the LooperSuite for macOS didn’t work at all. I searched both Rowin and Ammoon sites for an alternative firmware without any success.

Using LooperSuite v1.7 I tried to delete the Song 001 in vain. However, then I replaced the Song 001 with a blank WAV file and replugged the looper to my rig. To my surprise, everything was working as expected.

Considering the price it’s an awesome looper, but I have no idea if it’s going to freeze again.

EDIT:

LooperSuite 1.7

Working WAV file to use as a replacement

Build Report: Swollen Pickle (Modified Big Muff Pi)

Some years ago I developed interest in guitar pedal effects and stompboxes in general. Built a Woolly Mammoth that I learned a lot on the subject, then soon after a bunch of TubeScreamer Clones. I did it for personal use and to give to friends. Just as I started the TS projects, a long time fella presented me the Swollen Pickle MkII, a modified version of the famous Big Muff Pi.

The MkII version didn’t had any schematics or PCB layout on the internet. I only found a veroboard version of it, I really don’t like the veroboard layouts because they are clumsy and big. For the first time I used EagleCAD Software and tried to reverse engineer the layout back to the schematics. While still looking for more information I found a discussion with a non tested schematic and suggestions over that one. No working pcb layout though, so I continued to draw the schematic.

After I finished the schematics I started the board layout, like the schematic, I never did it before. It was a completely new experience for me, a mix of trial and error until everything fits on the board. With the finished board layout I had one more step: the enclosure.

After some measurements I chose a Hammond 1590XX for the enclosure and the aluminium etching method. I used the same tone transfer method as used for the PCB, but I ended up using caustic soda instead of ferric chloride. I had some bleeding on the edges because I used tape to mask and some bleeding where the toner didn’t transferred properly, maybe next time I will seal everything with nail polish and use ferric chloride instead. 

With the corrosion done, I sanded everything, painted the bas-relief with black spray, sanded again and applied varnish. I drilled it with my power drill, using one spade bit to start all holes(just the tip) and then used a step cone drill bit to the right size.

Nothing new with the PCB and Pedal assembly. I chose a super bright green LED as status indicator. It gives nice touch to the pedal, but ruined the video.

To the video I just downloaded some bass DI tracks over the internet and reamped them using the pedal.

Conclusion:

It was a long and complex project for me. If I had the opportunity to redo anything today I would test the aluminium etching on a small scale first. The Eagle CAD part was tiring, but insightful. As for the video the LED ruined it, but I was so tired and wanted to publish something, so I didn’t record another take.

You can download the used Eagle files, ready to transfer pcb layout and partlist on my GitHub repository.