

Comet Iwamoto C/2018 Y1 occulting two stars




Make Your Own $2 Artificial Star For Telescope Collimation







How To Fix Audio Skips And Stuttering on a Raspberry Pi


If you have been experiencing audio skips or stuttering on a Raspberry Pi, then I may have a solution for you.

For background, I use an older Raspberry Pi as an audio player, using mpd as an audio server, MPD Remote on my Android Phone, and Sonata on my Xubuntu Laptop.

It was working fine for a long time, but then it started skipping audio every 10 or 20 seconds, regularly.

OnStep ESP32 Smart Hand Controller SHC




Here is a video that I did demonstrating the features.


Here is an image of the SHC PCB, V1.03.

Presentation: Microcontrollers and the Internet of Things (IoT)



Last Monday, I gave a talk at the KWLUG on Microcontrollers and The Internet of Things (IoT).

It covered topics such as: how microcontrollers are different from 'computers', the Arduino and Arduino IDE, the ESP8266 and ESP32 WiFi enabled microcontrollers, and using MicroPython on them. Also covered the very low cost STM32 ARM Cortex microcontroller.

OnStep Telescope Controller STM32 PCB and ESP32 SHC Kits



Here is a video of the completed PCB.

Cargo Cults of the Melanesian Islands


What happens when aboriginal people who are living a hunter/gatherer or farmer life style come face to face with 20th century technology and civilization too quickly? Their minds could not fathom the rest of earth's human civilization gradual progression over the past 5,000 or so years.

The people of Tanna island of Vanuatu suddenly woke up during World War II to the U.S. Navy establishing airfields, forward bases, and housing close to 250,000 people, with all the necessary support services, including telephone and cinemas.


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