On Mon, Aug 05, 2019 at 11:15:51AM -0400, rdh@tilde.institute wrote:

Hey, ~institute!

In a poor attempt to get some chatter going on this list, what are we all working on this week? Me? I don't have any big plans yet, but I think I'll be spending the day fixing a weird printer issue at work. What about you guys?

Hola! It's been a bit of a busy week for me. Flew to San Francisco from Atlanta Sunday, then flew back on a red-eye flight. 4 1/2 hours, departure at 10:30PM Monday, arrival 6:00AM, so my Tuesday (today, return day) has been totally ruined. haha. I keep falling asleep randomly and can't focus on much. In other words, I've been useless today.

I'll probably be doing a bit more work on the new tildecoin implementation, tomorrow. In addition, I think I'm going to re-start my pet project, which is a MUD engine. Previously, I had started it in Go, which let me mock up some things very quickly, but I think I want to take a stab at a rewrite of what I have in Rust. I've been wanting to build those Rust muscles and it'd be a good project to work on, on the side.

~ahriman

On Mon, 05 Aug 2019, rdh@tilde.institute wrote:

In a poor attempt to get some chatter going on this list, what are we all working on this week? Me? I don't have any big plans yet, but I think I'll be spending the day fixing a weird printer issue at work. What about you guys?

Well, I'm on vacation, but I have a pretty good list of things to do, both at work and personal projects.

At work I have to upgrade some redis clusters when I get back to work, also upgrade some linkerd stuff and find the right metric to base autoscaling for one of our apps ... Nothing really interesting, but it keeps me quite busy.

About personal projects ... the list is quite big. I'll list here a few so maybe that forces me to start/finish them hehehe:

* fix my automatic irrigation system, which is now non-functional due to (probably) a faulty ESP8266. * Create some ansible stuff for rapid disaster recovery of my workstation (and maybe other stuff). * Finish to write man pages for all my custom scripts and small cli tools, so they are properly documented and I don't have to look at the code if I want to use them 2 months after last use. * write an IRC bot, just for the fun of it. * build another guitar pedal (EQ) for my dad. I built him one, but I think the design can be vastly improved. * find time to play with VCV Rack, and maybe build some physical euro-rack modules to play with analog audio. * ...

The list is endless really ... I'll try to write about them if I achieve something remotely interesting or, at least, send a message here in case somebody finds it useful.

Cheers,

yall are doing such cool things.

I made my first go program today. It's not a work of art, but I'm feeling my way around the language.

https://privatebin.net/?73d6f5875bac919f#AwZNYP3kumLhBHudgyJBcGFTBXDbsTGe7VP...

On Thu, 08 Aug 2019, ahriman wrote:

On Thu, Aug 08, 2019 at 05:23:04PM +0200, Paco Esteban wrote:

...

• build another guitar pedal (EQ) for my dad. I built him one, but I think the design can be vastly improved.

Oh man, that sounds so cool. I wouldn't even know where to begin with something like that!

Well, is not that hard, really. There are tons of designs out there. You only have to pick one, order the components and start soldering either on a perfboard or, if you want more permanent results, on your home made PCB or even order one online. Finally, pick a good case and maybe paint it to give it your style.

On my first attempt (which my dad still uses) I used this design:

http://www.generalguitargadgets.com/effects-projects/eq/6-band-graphic-eq/

Things get more interesting if you want to understand what's happening with the signal and all that. There are some good youtube channels out there if you want to go down the rabbit hole. I highly recommend it, but your time will disappear quite fast :-P

On that design for instance I had to debug some problems it has. The most important one is that it cannot share a power supply with other pedals, as it splits the power rail to create a virtual ground (to supply the op-amps with positive and negative voltage). So if you share the ground with other pedals, you're effectively shorting the negative side to the circuit ground ... In summary it has to be isolated with its own floating supply or batteries.

Also, the power led affects one side of the power rails ... so I had to fix that too on the original design ...

Anyway, my idea is to find a better design or create my own based on this one and others now that I understand a bit better what's happening.

Cheers,