electra

Electra.Academy

Circuits are better animated. Create, simulate, share, and explore electronic circuits!

See It in Action

When you make changes to your circuit design, Electra.Academy will show you animated simulations of how the logic changes are affecting your circuit. You’ll be able to see exactly how your circuit is operating!

Test It Out

Even if you’ve just come up with a brand new circuit design, Electra.Academy has got you covered. With its special circuit simulation engine, you’ll be able to see how your circuit is working and make adjustments as needed.

Play Around

You can even adjust the circuit parameters while the simulation is running, and watch in real-time how your circuit responds. It’s a fun and interactive way to learn about circuit design!

Hosted on https://electra.academy

License

Electra.Academy is licensed under the GNU Affero General Public License v3.0 or later (AGPL-3.0-or-later). The full text is in LICENSE.

Schools, educational institutions, individuals and non-profit groups: free to use, and explicitly welcome. The AGPL makes no distinction between commercial and non-commercial use, so a school with tuition fees or a public body with a fee-funded budget does not have to work out whether it qualifies for an exemption. It does.

In return, the AGPL requires that anyone distributing the software - or operating a modified version as a network service (AGPL section 13) - makes the complete corresponding source available under the same license. In short: you may earn money with Electra.Academy, but you may not close it.

• Plain-language summary, German and English: LICENSING.md
• Proprietary or closed-service use: COMMERCIAL-LICENSE.md
• Bundled third-party components and their licenses: THIRD-PARTY-NOTICES.md

Support for schools

Hosting, operation, maintenance, support and training are services and are not restricted by the license - no commercial license needed to buy them. Enquiries: [email protected]

Local Development

Prerequisites

• Node.js and pm2 (npm install -g pm2)
• Docker Desktop for the local Postgres database

Start the database

1. Open Docker Desktop and wait until the Docker engine is running (whale icon in the menu bar turns solid).
2. Start the Postgres container:

cd database
docker compose -f docker-compose.dev.yml up -d

The container runs Postgres 14 on port 5432 with user/password/db all set to docstore. Stop it with docker compose -f docker-compose.dev.yml down.

Start all services

pm2 start ecosystem.config.js

Restart a single service (e.g. after a code change):

pm2 restart shapes

Contributing

Bug reports, fixes, translations and teaching material are welcome. Please read CONTRIBUTING.md first - it explains the license terms for contributions and why there is an additional copyright grant.