For full recipes, please visit our recently launched Egyptian Cuisine Recipes web site.

OnStep Telescope Controller on Low Cost STM32

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Over the winter, I worked with Howard Dutton, the author of OnStep Telescope Controller, to make it work with the low cost STM32 ARM Cortex M3 microcontrollers. This involved writing a hardware abstraction layer (HAL), so adding different architectures in the future would not be too hard, as it was.

Presentation: Incremental Backup For Linux

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Yesterday, I gave a talk for the KWLUG on Incremental Backup For Linux. This is targeted towards home networks or small businesses using Linux, although I touched a bit on some enterprise considerations and technologies.

The solution I use relies on the dump and restore utilities for the ext4 filesystem, along with rsync from laptops.

The slides are attached below, as PDF. The meeting was recorded, and the video should appear here shortly.

Presentation: Forgotten History: Al-Sufi's Book of Fixed Stars

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On Friday 27th of January, 2018, I gave a presentation at the KW RASC on Al-Sufi's Book Of Fixed Stars.

The book is the first illustrated pictorial star atlas, and was very influential for centuries after it was authored. It spread widely from central Asia, throughout the Middle East, and to Europe. It was translated into many languages.

Here is the presentation slides, and audio recording:

Installing Arduino IDE for STM32F103 boards

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If you want to use the Arduino IDE for STM32F103 boards, you need to do the following.

The instructions are for Linux, but it is just downloading, extracting and renaming, so you can use similar steps for Windows of Mac OS/X.

Install the Arduino IDE

First, go to the Arduino web site

Select your platform, and download

Extract the IDE

tar xJvf ~/Desktop/arduino-1.8.5-linux64.tar.xz

Rename the directory

AstroEQ: Telescope Controller With EQMOD Emulation

AstroEQ is another GOTO telescope controller from the UK.

Basically, the author was a university student when he started this project, to convert a non-GOTO motorized mount into a GOTO mount.

A ready made AstroEQ controller is available for purchase. It has USB on one side, and two connectors for steppers on the other.

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