After the last post, we were left with a working voltage controlled oscillator (VCO), voltage controlled amplifier (VCA), and an envelope generator. The next logical step would probably have been to make a voltage controlled filter (VCF) module. I didn't do that. Instead, with most of a working synth 'voice' …

In the previous post, we looked at the process for making a double sided PCB for the front panel components of an analog sytntheziser module. Now we're going to look at the module itself.

WTF is an Envelope Generator?

Very briefly, An envelope defines the extremes of some signal over …

Intro

I've been wanting to try milling double-sided PCBs for awhile, and I finally have a good reason. I'm trying to make an easier to assemble front plate for an analog synth module. Previously, I have been making connections to jacks and potentiometeters with soldered wires that terminate in connectors …

Hopefully nobody was holding out for the next episode after the cliffhanger ending of the tkey posts from 3 years ago. This one is just going to be some images of repairs I've done recently with some words added to remind me why they're in the gallery.

chair:

This is …

In our last episode, we used the age-plugin-tkey age plugin with the passage tool to encrypt a local password store without gpg.

This time, we'll discuss an easier way to install the plugin (on Arch linux, anyway), and try to use it with the passff extension to load passwords into …

The Tillitis TKey is a recently released open hardware security key that you load with custom applications. One useful application is encrypting passwords for the pass utility.

Even more details about the TKey in this ~20 minute video

Most of the existing libraries and utilities for the tkey are made …