1: https://earendil.com/posts/session-portability

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I want to help people making a living from what they've created with their hands. A major focus to do so is to connect with local artisans and learning from their perspective.

On the technical side, I'm developing a static site[0] with Astro / React / Shadcn. The main interface is a OSM leaflet map with a custom calendar timeline.

As a software developer, this is my main entry in the world of agentic engineering. I'm using OpenCode with models from OpenRouter. One of the surprising insights is that there are often free quotas for new coding models (e.g. MiniMax). It's a very interesting time for building.

[0] https://ains.art

For my side hustle I have to ramp-up on other areas like marketing, legal, sales, ...

So I wonder if there are similar high-quality sources like HN for these areas.

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However, when I became a father I started valuing my time much higher (watching less YouTube and reducing other time sinks).

So it made me more productive but also heavily reduced the time available.

Can you recommend any cloud providers for the typical Linux user / web developer?

Recently I've switched from the UNIX pass password manager to Bitwarden and I'm very happy with it. So I'm looking for something similar among the cloud providers.

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I've started with this [1] common diagram showing the relations of the four fundamental quantities.

Charge q: Experiences positive / negative force in an electric field.

Current i: Amount of charge passing through a surface.

Voltage v: Potential energy of charge.

Flux Linkage Φ: Amount of magnetic field passing through a surface.

dq = i dt: Definition of current as charge per time.

dv = R di: Ohms law, voltage drops as current flows through a resistor.

dq = C dv: Charge on a capacitor changes with a voltage change according to the capacitance.

dΦ = L di: An inductor creates a magnetic field when current flows through it according to the inductance.

dΦ = v dt: Faradays law of induction, change of the magnetic flux linkage in an inductor induces a voltage change across the inductor.

dΦ = M dq: Formula of the memristor. The device must change resistance M according to the amount of charge that has passed through it.

According to ChatGPT, the dΦ in the memristor is an abstract state variable and does not imply there is a magnetic field involved. But lets get to the mechanical system.

Imagine a coil on one side, and a rotatable permanent magnet on the other side. When charge flows through the coil, it creates a magnetic field, causing the permanent magnet to rotate to align field lines. The changing magnetic field of the permanent magnet causes a voltage change in the coil. Hence the measured resistance of the coil changes, when current flows through it. The formula dΦ = M dq seems very intuitive to me, now that it involves an real magnetic field that changes.

What do you think of the described mechanical system. Can it behave like a memristor? According to my understanding, the way to find out would be to build it and make measurements of voltage and current. Plotting it on the v-i plane must show a pinched hysteresis loop.

Also, isn't this very similar to how magnetic storage works using the magnetoresistance effect?

[1]: https://en.wikipedia.org/wiki/Memristor?useskin=vector#/media/File:Two-terminal_non-linear_circuit_elements.svg

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