It wasn’t Steve Jobs, but former Apple Computer CEO John Sculley, who in his book Odyssey: Pepsi to Apple, introduced us to the Knowledge Navigator, an astoundingly capable virtual assistant. Today, more than thirty years later, smart speakers are trying to implement at least some of the conversational concepts, envisioned in the Knowledge Navigator video, […]
Configuring multiple SSL certificates for a single Tomcat connector
Sometimes you may want the same Tomcat instance to respond to requests for more than just one hostname. For HTTP this can easily be accomplished, by mapping those hostnames to the same IP address, using the tools provided by your registrar. Supporting HTTPS for multiple hosts is more involved since the SSL certificates need to […]
Micro Python on ESP32 (HUZZAH32)
Adafruit’s HUZZAH32 Feather board is built with the official WROOM32 module: Two CPU cores that can be individually controlled, and the CPU clock frequency is adjustable from 80 MHz to 240 MHz 448 kB of ROM for booting and core functions. 520 kB of on-chip SRAM for data and instructions. 8 kB of SRAM in RTC, […]
Installing an SSL Certificate on Tomcat
If you have Tomcat installed on your Mac or Linux computer, like I have shown here and here, you may sooner or later want to serve content not only through HTTP, but also securely through HTTPS. Instead of going the self-signed certificate route, where the certificate is signed with its own private key, I’m describing […]
Emotion Lamp
The idea behind the Vocal-Emotion Lamp is rather simple: to use a small affordable computer that can continually recognize emotion from the human voice and then visualize the result of the analysis, effortlessly and enjoyably. The implementation of this idea uses the small and inexpensive Raspberry Pi computer, extended with a far-field microphone expansion board. The software that performs […]