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Lightning Talks

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[edit] About

Lightning Talks are 4-minute talks by various people combined in a set of 10 talks in one hour. You can present a strange idea, your nifty program, a cool project, some hardware you like - or whatever.

These talks can definitely be used to talk about the booth you are maintaining or the workshop you will be giving.

Please send some feedback to E-Mail 25C3[├Ątt]lightningtalks[dot]de - thanks!

YYYY-MM-DD Day start--end Room URL
2008-12-27 Sat --- --- ---
2008-12-28 Sun 11:30--12:30 Saal2
2008-12-29 Mon 11:30--12:30 Saal2
2008-12-29 Mon 20:30--21:30 Saal3
2008-12-30 Tue 11:30--12:30 Saal2

Click the three links below to see the list of speakers and their topics and even more details:

[edit] Lightning Talks Day 2: Speakers and Topics

[edit] Lightning Talks Day 3: Speakers and Topics

[edit] Lightning Talks Day 4: Speakers and Topics

[edit] Notes

Time: We have four hours to fill - no more. Four hours. That's it. Expect ten talks each day at most.


  • There is no need to fill the available time.
  • There is no need for any catchy slides.
  • Just be informative, be quick, be smart.
  • Tell people how to get involved and how they can contact you.
  • Add links to the description here in the wiki.
  • Add links to your contact info (ie a dect/phone number, and an email address).

Last slide:

  • Keyword
  • Title
  • Name
  • Contact (DECT, email, fon)
  • Links (project homepage)
  • Place of contact (booth, room, party)

[edit] Preparation

Since there are a lot of Lightning talks, please bring an USB stick with your slides - then we don't lose time to connect each laptop to the beamer.

The moderator should bring a laptop which is capable of reading PDF and PPT (OpenOffice) to the sessions. If you insist on using your own laptop, your talk will be scheduled to the end of the session. There will be a hard cut after 4 minutes of talk.

[edit] Hints for Bad Speakers

  • Just sit somewhere in the audience.
  • Wait for the moderator to call you up stage.
  • Plug in your laptop and dont waste time with the setup of the mirco.
  • Just speak as you always speak.
  • Never mind the audience.

[edit] Hints for Good Speakers


  • Practise your talk with friends.
  • Send a copy of your slides to the moderators.

At the congress:

  • Be in the room there in the break before the slot.
  • Meet to the moderator and mention your name and talk.
  • Test your hardware with the projector.
  • Take a seat in the front row.
  • Find out who the person is before you.
  • Get ready for your talk.
  • When called, get on stage.


  • Adjust the microphone.
  • Speak in your mother tongue.
  • Say who you are and mention the title again.
  • Avoid slides.
  • Avoid fast talk. Speak clearly and loud.
  • Only say the most interesting stuff;
  • say everything else on your webpage.
  • When you hear the gong, say goodbye.
  • Leave the stage.

After the talk:

  • Be prepared to meet interested people.
  • Give them a flyer or a handout.
  • Get back to them during the congress.
  • Send them an email after congress.

Check your Hardware: Do not waste time with the setup! Study how the VGA of your Laptop works. Especially if you have installed Linux only to show off during the Congress. Test your hardware with the laptop before the show starts. The short periods during the Lightning Talks prohibit that you invest 4 minutes to the settings of your graphics card (That's generally a good idea for all speakers). Anyone whose setup does not work will be asked to go off stage and try again at the next slot. Some people need an adapter, e.g. Macbook MiniVGA to VGA adapter! Hopefully someone will bring one... If in doubt - bring your own!

There will be only VGA inputs available for the video projectors (a.k.a. beamers). If you need to feed in some other type of signal (e.g. from a camera-to show small things (CVBS,S-video), an ultra new laptop which has only HDMI, some weird gaming console that you will crack (YUV), or whatever) bring a device which can really *convert* these signals. Simple passive adapters mostly do not work (e.g. there are adapters from HDMI to DVI and from DVI to VGA, but with the you will *never* be able to convert a HDMI signal into VGA, without a real converter). Last year we had some converters for CVBS/S-Vid to VGA, but only after Day 2. Probably there won't be any this year. So - if you need any then bring your own!

Register: Enter your talk in the overview table, i.e. the language (DE/EN), your name, the title, - and a short description (not in the overview table, though).

Content: Usually the topic is some cool program or project - but it can also be a good rant.

Practise!: Practise your talk. Know your words. Time your speech. Do not waste time on deviation, hesitation, or repetition.

Presentation: Adjust the microphone. Make sure your voice can be heard. Speak in your mother tongue. Do not waste time stuttering in English when you are quite familiar with German. Whatever the topic - dive right in, and make it count! One "word" of introduction should suffice, and then give us as many info as you can within the available time as possible. Expect the audience to look up references themselves. Remember: This is not a lecture where you should define and explain all words you use - this is a lightning talk!

End: When your hear the buzzer/gong finish it immediately, i.e. say "thanks for listening to my talk about $FOO. the website is $URL, and contact me on number $DECT". Please be fair about the to those talking after you - and just leave the stage.

Links: Enter *one* link to your own page on the matter. Add your slides and more info and link to that page.

Moderators: Being a moderator is a stressy job. Two moderators are better than one. Changing microphones between people costs too much time. So everyone involved should have a microphone - the speakers, and both of the two moderators. As you will most probably be dealing with a laptop, you should have your hands free; use headsets! Bring some DVI/VGA adaptors - speakers usually forget them. Bring a buzzer/gong, too. Shove boring speakers off stage.

Slots: The slots after a break are much referred because you get a chance to test your setup during the break. Moderators should make sure the audio and video angels are present in those breaks to help testing the setup. Be sure to get a (nick)name and a DECT phone number, too.

[edit] HowToAdd

If you want to give a Lightning Talk at 25C3, then enter your offer at the empty table at the specific date you would like to present. Please state:

NAME Nickname or Real Name
KEY Keyword

After that, add another entry for the description below:

key Keyword
lang EN or DE
name Nickname or Real Name (contact details like Jabber or E-Mail)
title Title
info More informations about your Lightning Talk
links Hyperlink

[edit] Discussion

You can use the Talk:Lightning_Talks-page for discussions if you like.

Archived page - Impressum/Datenschutz