OPEN TECH & ENERGY AUTONOMY

Energy and technology belong to the people

An open lab for solar experiments, independent edge servers, and free software. We measure, share everything we learn, and build open projects.

Explore ideas How it works

A solar charging station in a public space

Focus for 2026

Technical roadmap 2026

PLAN

active projects and prototypes

Solar hardware, sensors and speech models

PLAN

10+

open schematics and software tools

Open hardware & software licenses

PLAN

100%

open source & open telemetry

Public docs and open measurements

PLAN

0 €

zero profit — completely free knowledge

100% independent and volunteer-driven

Open-source project in active development. These are technical targets and plans for the current year.

How it works

Step 1

We measure

We deploy open sensors, collect telemetry, and measure solar irradiance and energy consumption in the field.

Step 2

We prototype

We build open hardware, pure code, and off-grid solar nodes. We validate every prototype through practical experimentation.

Step 3

We share

100% open source, step-by-step guides, wiring schematics, and open data for anyone to reproduce and build upon.

Projects

Open projects, prototypes, and sprouts — ideas for energy autonomy and open technology.

A kite carrying a radio payload and LoRa repeater above a valley

active

Airborne Communications

Elevating lightweight LoRa mesh transceivers with kites and tethered balloons for extreme range, emergency communications, and open atmospheric telemetry.

Location: Vodno, Skopska Crna Gora and valley ridges
Capacity: LoRa 868 MHz · Meshtastic · 100+ km LoS
Budget: ~€520

Hands-on solar hacking lab and battery pack assembly

active

Open Workshops & Education

Practical hardware labs for solar energy, safe DIY battery assembly, building resilient off-grid computing nodes, and freely accessible open curriculum.

Location: Hackerspaces, makerspaces, schools, universities & outdoors
Capacity: Hands-on hardware labs
Budget: ~€150

Local document signing workflow and open hardware cryptographic keys

active

Local Cryptography & Digital Signatures

Self-sovereign digital identity, private local PKI via step-ca, and client-side cryptographic document signing with pyHanko without corporate cloud lock-in.

Capacity: step-ca · pyHanko · Ed25519 · WebCrypto
Budget: ~€110

Solar charging bench and edge computing node in a public space

active

Solar Charging Station & Edge Node

A portable open-hardware solar bench with synchronous MPPT control, LiFePO4 battery management, Raspberry Pi edge server, and RS485/Modbus telemetry.

Location: Public spaces, campuses & community gardens
Capacity: 120W PV array · 256Wh LiFePO4 · Raspberry Pi 4 · RS485/Modbus & LoRa
Budget: ~€350

Projects

Data

Open data and short analyses. Every chart carries one explanatory sentence and a link to the source table.

Budget for 2026 by programme, in euros
Programme	Budget	Budget
Flying communications	520 €
Solar charging station	250 €
Digital signatures	110 €
Education	80 €

The whole first year costs under a thousand euros, and the most expensive programme is the one that produces measurements — the other three together cost less than it does.

All data

Where to start

For households

Have a roof and looking for solar self-reliance? Start with real measurements — open and free.

For hackers & makers

Hacking microcontrollers, open hardware, LoRa nodes, or free software? Build prototypes with us.

For research & education

Independent research, open educational resources, and shared laboratory discoveries.

Open data

All telemetry measurements, solar irradiance logs, and analyses are freely downloadable in CSV.