A nice LED installation at FeketeZaj
FeketeZaj is the one festival that truly has my heart. I always try to be there and do something special.
Architect of Practical Tech.
I'm Andras Lonczkor, though most people call me lonczy. I'm a technology generalist with more than 20 years of experience building and operating real-world systems. I solve practical engineering problems across infrastructure, networking, automation, software, and hardware. This site is a growing library of useful Practical Notes, project lessons, and consulting context.
Infrastructure & Operations
Linux, cloud, networks, VPNs, observability, and production operations across on-premises, edge, and AWS environments.
Automation & Integration
Deployment, configuration, monitoring, operational tooling, and API or protocol integrations using practical, maintainable automation.
Edge & IoT/OT
Controllers, industrial protocols, custom hardware, commissioning, and fault diagnosis across devices, site networks, and cloud services.
Latest Practical Notes
Not a blog. A knowledge base of practical engineering decisions.
How and why to reuse SSH connections
Why use multiple SSH sessions over a single connection? Reusing connections speeds up new sessions, simplifies authentication, and can help when networks are under strain.
BIMA10: Prototyping with Supercharge and Zenobe
I worked with Supercharge and Zenobe on early prototypes supporting electric-bus charging and energy-storage systems. It was fast-paced work, with new challenges almost every day, and it was rewarding to see the team’s work recognised by BIMA10.