Jan B

@jbtronics
16 Followers
29 Following
27 Posts
Physics Phd student living in Germany, interested in electronics, programming and technology
https://github.com/jbtronicsGithub
I have optimized a few things with my WebSDR setup (replaced noisy power supplies, added chokes and added a larger whip to the miniwhip) and now get highly better results. I received over 12k stations from 115 countries in the last 24 hours.
#hamradio #ft8 #websdr #sdr #amateurradio #hf #web-888
Honestly I'm a bit surprised how well it works (especially for the intercontinental RXs), considering that the location here is far from ideal: The mini whip is on my balcony with some other buildings around, and seems it is picking some pretty strong QRM from somewhere, which are visible across the whole 30 MHz in regular distance...

I am using an #web-888 #websdr with an mini whip antenna to monitor 11 bands of #FT8 and #FT4 in parallel and automatically report it to pskreporter.

That is what it received in the last 24 hours (under DK9JHB/sdr)

#hamradio #amateurradio #sdr #qrp

Part-DB the #opensource serverbased inventory management system for #electronics hobbyists, universities and #makerspaces has now 1000 stars on #github

https://github.com/Part-DB/Part-DB-server

Become part of the community today and checkout Part-DB.

#partdb #programming #hackerspace #makerspace

GitHub - Part-DB/Part-DB-server: Part-DB is an Open source inventory management system for your electronic components

Part-DB is an Open source inventory management system for your electronic components - Part-DB/Part-DB-server

GitHub

I have released jbtronics/translation-editor-bundle - A symfony bundle to edit translations directly from within symfony profiler for an easier development workflow.

https://github.com/jbtronics/translation-editor-bundle

#symfony #php #symfony-bundle #webdev

GitHub - jbtronics/translation-editor-bundle: A symfony bundle to allow editing translations in the symfony profiler

A symfony bundle to allow editing translations in the symfony profiler - jbtronics/translation-editor-bundle

GitHub

The next part of my #tutorial series for jbtronics/settings-bundle (part 3):

User-configurable settings in Symfony applications with jbtronics/settings-bundle (part 3):

https://dev.to/jbtronics/user-configurable-settings-in-symfony-applications-with-jbtronicssettings-bundle-part-3-migrations-and-environment-variables-4jpl

Also available on github: https://github.com/jbtronics/settings-bundle/discussions/17

jbtronics/settings-bundle is a #symfony bundle which allows for easy user-configurable settings, in a type safe and declarative way.

#symfony #webdev #php #web #programming #development #github #devto #composer

User-configurable settings in Symfony applications with jbtronics/settings-bundle (Part 3): Migrations and environment variables

In the first two parts of this series, the basic concepts of the settings-bundle were introduced and...

DEV Community

User-configurable settings in Symfony applications with jbtronics/settings-bundle (Part 2): Forms

After the first blog post of this series explained the basic concepts of the settings-bundle, this... #symfony #Symfony

https://dev.to/jbtronics/user-configurable-settings-in-symfony-applications-with-jbtronicssettings-bundle-part-2-1704

User-configurable settings in Symfony applications with jbtronics/settings-bundle (Part 2): Forms

After the first blog post of this series explained the basic concepts of the settings-bundle, this...

DEV Community

The next part of my #tutorial series for jbtronics/settings-bundle:

User-configurable settings in Symfony applications with jbtronics/settings-bundle (part 2):

https://dev.to/jbtronics/user-configurable-settings-in-symfony-applications-with-jbtronicssettings-bundle-part-2-1704

Also available on github: https://github.com/jbtronics/settings-bundle/discussions/11

jbtronics/settings-bundle is a #symfony bundle which allows for easy user-configurable settings, in a type safe and declarative way.

#symfony #webdev #php #web #programming #development #github #devto #composer

User-configurable settings in Symfony applications with jbtronics/settings-bundle (Part 2): Forms

After the first blog post of this series explained the basic concepts of the settings-bundle, this...

DEV Community
User-configurable settings in Symfony applications with jbtronics/settings-bundle (Part 1)

Symfony offers vast configuration possibilities using container parameters and environment variables....

DEV Community

What you can see here is the glowing of the argon #plasma during a DC #sputtering process.

The argon ions inside the plasma are accelerated by a high voltage (multiple hundred volts) and collide with the metal target. These impacts throw out some atoms of the target, which then get deposited on the small substrates you can see at the bottom. That way you can create thin metal layers with just a few hundred nanometer thickness or less.

#science #physics #lab #physicist #physik