Saunacast

Show: SaunaCast

  • WHY2025 Edition

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    Sven Haiges
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    Andreas Neumeier

    Summer’s Over, Let’s Talk Hacking!

    Hey everyone, and welcome back to Saunacast! We’re kicking things off by shaking off the vacation sand. Sven’s back from a sunny trip to France, while Andreas has been hacking in the Netherlands. The biggest news, however, is that Sven has officially joined the 21st century with a brand-new fiber connection. The future is now, and it is fast. (but lagging with 160ms latency)

    Let’s talk about WHY2025!

    Speaking of the future, we’re looking back at the biggest event this year: WHY2025.

    If you’re not familiar, WHY2025 is part of a legendary Dutch hacker camp series, that happened from August 8th to 12th, 2025. This isn’t just another conference; it’s the tenth event in a series that stretches all the way back to 1989 (GHP, HAR, OHM, SHA, MCH, and more). It’s a proper milestone and a must-attend event for anyone in the hacker and maker community.

    Andreas joined a village this time, the „Flying Objects“ — a cozy corner of the campground with four tents, a communal kitchen, and, of course, co-located with groups that tested out cool flying objects.

    Between the tech talks and creative chaos, Sven talks about upon the Kristallmarathon, a half-marathon that takes place in a salt mine. Because, why not? A link is in the shownotes, and chances are you’ll be able to meet Sven there.

    As far as WHY2025 goes, it’s community organized. 

    The conference had a Call for Papers ! Any one could submit his project or an idea to share, and had a chance to submit it, and to get into the official schedule.

    A Quick Warning About the Badge

    The conference badge is always a highlight, but there’s a serious heads-up for this one. Early versions have been identified as a potential fire hazard. Please be careful and read the community warning first published on the Revspace forum. For official info, keep an eye on the badge wiki.

    The Future of A2A Communication

    Changing gears, we explored a topic that’s getting us really excited: Agent-to-Agent (A2A) communication. This is a concept we’re also digging into on our sister project, #labstalk. We briefly discussed Gibberlink and how it could be the future of how autonomous systems talk to each other.

    Want to go down the rabbit hole? We highly recommend this video:
    Agent to Agent Communication & Gibberlink on YouTube

    Come Say Hi!

    Finally, a little housekeeping. Our next Munich Tech Sauna is happening on September 11th at Aquariush. Come hang out, chat about tech, and relax. We’d love to see you there

  • Vibe Coding

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    Andreas Neumeier
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    Sven Haiges

    Intro

    • We ran the Reschenlauf on Jul 12, Sven went by bike, extended for Kiteboarding
    • England won the Women’s European Soccer Championship
    • Pogacar won the Tour de France, Florian Liopwitz came in third, 3 weeks long

    Main

    Vibe Coding with Andreas, Vibe Coding for Product Management and creating a bit of a vision for the team, and prototype a mockup

    Udemy Course on Agentic AI by Ed Donner

    • The Complete Agentic AI Engineering Course by Ed Donner – 6 Week Course
    • Topic of the year so far is agents, that’s why I took the course
    • Excellent content & learning with Jupyter Notebooks: Raw Agents (simple tool use), OpenAI Agents SDK, Crew AI, Autogen, Langchain, OpenAI Agents with MCP
    • N8N to start using a visual agent environment, I created a simple Discord Quote Agent (daily trigger) for example
    • Uses Cursor IDE – which I used for some time, then shifted to VS Code with Github Copilot, worked also well
    • Agent vs. Workflow Design Patterns
    • Various LLMs from OpenAI, Anthropic, Google, Grok used
    • Little gadgets/tools: PushBullet, Gradio (for UI), Sendgrid (emails), OpenAI Web Search (expensive), Deploying to HugginFace Spaces, Serper Search API/Tool, PlayWright (web browser), and of course the great UV (package and project manager for python written in Rust)
    • Amazing multi agent trading project at the end. Each weeks project was working nicely, well explained, easy to run in Jupyter or via python on the command line in the venv

    Housekeeping

  • Saunacast 03

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    Andreas Neumeier
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    Sven Haiges

    Intro

    Dolomiti Bike Day & Sport Scheck RUN HM

    Sven participated in the Dolomiti Bike Day and the SportScheck RUN Half Marathon, with a final time of 1.46h.


    Andrej Karpathy: „Software Is Changing (Again)“

    Andrej Karpathy’s video discusses the evolution of software from Software 1.0 (traditional code) to Software 2.0 (neural networks), now moving into Software 3.0 with Large Language Models (LLMs). He likens LLMs to new types of computers, programmable with natural language, and compares them to utilities, fabs, and even operating systems that will eventually move to personal devices.

    Karpathy highlights the „psychology“ of LLMs, noting their vast knowledge but also cognitive deficits like hallucinations and „anterograde amnesia“ (limited context window). He identifies key opportunities:

    • Partial Autonomy Apps: Keeping humans in the loop to speed up the generation-verification process (e.g., Perplexity, cursor).
    • Vibe Coding: Making software development more accessible by working in small, verifiable chunks.
    • Accessible Digital Infrastructure: Creating LLM-readable summaries and documentation (e.g., llms.txt similar to robots.txt).

    The future, he suggests, involves a decade of developing human-augmenting agents, acknowledging LLM fallibility and focusing on human-AI collaboration.


    Hacker Event this Summer

    • Why 2025: The tenth quadrennial hacker camp in the Netherlands since 1989.

    Events & Tech News

    • Google Cloud Summit: Focused on sovereignty, air-gapped offerings, and AI models.
    • Meta XR Event: Discussed B2B use cases, ecosystem, platform, distribution frameworks, and education concepts for employee training.
    • Quantum Cryptography: Apple and Microsoft are adding post-quantum cryptography support (ML-KEM) to their operating systems this fall for TLS connections.

    Housekeeping

    A hiking trip is planned for August, join us at Munich Tech Sauna Hike https://lu.ma/dras7lyo.

    Shownotes

  • Saunacast 02

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    Andreas Neumeier
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    Sven Haiges

    Intro & What’s New 

    Catch up on our recent transalp trip at svenhaiges.de. This episode’s main topic is a deep dive into the world of the Saunameister.

    The Art & Science of the Saunameister Sven explains the dual role of a Saunameister, which combines a deep understanding of the medical effects of sauna with the craft of creating a perfect sauna experience.

    • Medical Basics: We cover how the body reacts to heat and cold, the cardiovascular benefits of „vascular training,“ and how sauna can boost the immune system. We also touch on when sauna is beneficial and when it should be avoided (contraindications).
    • The Craft in Action: Learn about the different types of saunas and the importance of the „Aufguss“ (infusion) ceremony. We discuss techniques, the use of fragrances, and the critical responsibilities of safety, hygiene, and guest hospitality.

    Andreas at Product Tank in Munich Andreas shares highlights from the recent Product Tank event:

    • Dan Touchette (ClearOps): Discussed the wins and failures of building a truly product-led organization.
    • Dr. Oliver Oechslein (B2Products): Shared powerful lessons on self-leadership and navigating the chaotic aftermath of selling a company.

    Recent Labs Talk Episodes

    Coming Up

    • Next Munich TechSauna: June 19th in Kochel am See.
    • Next Trip: Dolomiti Bike Day!
  • Sauna Warmup

    In this inaugural episode of SaunaCast, I introduce our exploratory journey into various topics in a sauna setting. We discuss the podcast’s purpose, our decision to conduct it in English, and our desire for feedback from the Munich Tech Sauna community.


    Upcoming segments include insights from my journey to becoming a qualified Sauna Meister and an exploration of the European Song Contest, particularly the entry “Barabada Bastu.” We’ll also address the intersection of technology and daily life, tackling themes like AI, digital sovereignty, and renewable energy.
    I invite listeners to join us in this unique space for thoughtful discussions and lighthearted moments, all infused with the warmth of the sauna.

    Title: Saunacast, but also „Sauna Lab“,

    Bara Bada Bastu, European Song Contst, ESC, „Just go to the Sauna“. Shoutout

    Saunameister – Sven

    Topics – AI, Quantum, Product Management, Security, Privacy

    Dependancies and Impact of Technology

    Digital Sovereignty

    Solar, Power-Outage, Energy Transition

    Going through Discord

    Drone flying, IoT, BlockChain, 3D Printing, not dropping NFTs anymore

    Sports, and health, with wearables

    Events. Today May 16th, Aquariush in Unterschleißheim

    Coming up in June 12. Register here.