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callcc

@ callcc @lemmy.world

Posts
60
Comments
498
Joined
3 yr. ago

  • After 3 prototypes and several motors I finally got this cat toy motorized, still pretty loud though I wonder if I can dampen the gearbox somehow

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  • Look into BLDCs maybe the ones for gimbals as you need very low rpm.

  • Just bought a house with some property - came with 8 hens and a rooster... Any suggestions for a newbie?

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  • I fed my chicken their own well crushed egg shells.

  • What are some games with absolutely fantastic soundtracks?

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  • Unreal

  • Discover Hidden Gems: Open-Source Software You Should Know About

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  • Thanks for taking the time to explain and sorry for the slightly aggressive tone.

  • Discover Hidden Gems: Open-Source Software You Should Know About

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  • I don't know what google keep is and I'm too lazy to look up proprietary software while browsing this community.

  • Anyone using a FOSS-friendly robot vacuum?

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  • Hahah, had the same experience. What a prick that dude.

  • DIY experimental Redox Flow Battery kit

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  • I'm not the designer of this. I've also wondered. Maybe it's just a practical choice to have something tough to attach your wires to.

  • DIY experimental Redox Flow Battery kit

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  • Not sure what MH is but in bigger systems magnetically coupled centrifugal pumps are used afaik.

  • DIY experimental Redox Flow Battery kit

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  • Amazing! I'm happy to hear I could recruit someone on Lemmy :)

  • DIY experimental Redox Flow Battery kit

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  • You can get them in the size of 500g or 1kg. I'd be happy to share from my stash if you live in EU.

  • DIY experimental Redox Flow Battery kit

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  • This is where I document my build. I'm updating frequently at the moment.

  • DIY experimental Redox Flow Battery kit

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  • The roadmap defines 3 milestone batteries. The first is released, it's a benchtop device that you can relatively easily build on your own. It has an electrode side of 2 x 2cm2. It does not store any significant amount of energy. The second one is being developed right now, it has a cell the size of a small 3d printer bed (20x20cm) and will also not store practical amounts of energy. It will hopefully prove though that they are on the right track and that they can scale it up. The third battery only will store significant amounts of energy but in only due end of the year (probably later).

    Current Vanadium systems cost approx. 300-600$/kWh according to some random website I found. The goal of this project is to spread the knowledge about Redox Flow Batteries and in the medium term only make them commercially viable.

    The aniolyth and catholyth are based on the Zink-Iodine system in an aqueous solution. There are a bunch of other systems though, each with their trade offs. The anode and cathode are both graphite felt in the case of the dev kit.

  • DIY experimental Redox Flow Battery kit

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  • Happy to hear! That must be the Lithium mafia! Just kidding. I have no clue why people downvote this. Maybe because it's a crosspost? I must admit I didn't read the community rules.

  • DIY experimental Redox Flow Battery kit

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  • I'm building one and am super excited. Unfortunately I need to waid for some more parts to start experimenting.

  • DIY experimental Redox Flow Battery kit

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  • You need Polypropylen filament for printing, graphite felt as electrode, grafoil gasket material as bipolar plate, brass plate as current collector (cut by cnc), silicone gasket material and a measurment device like a potentiostat.

    If you're really interested, living somewhere in the EU, I could send you some stuff. I also have the chemicals in big quantities.

  • Where to get good real leather shoes?

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  • Panama Jack I think.

  • iMessage has trouble with a simple layout

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  • Probably it's new AI based layout engine.

  • Blossom End Rot

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  • It's more against the rain. Although some shade might be helpful too.

  • Blossom End Rot

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  • Are they covered? After two seasons of pure endrot I bought a shabby little "greenhouse" to grow my tomatoes in. Fingers crossed for this year.

  • 3DPrinting @lemmy.world
    callcc @lemmy.world

    Case for dew-point ventilator

  • FreeCAD @lemmy.ml
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    Case for dew-point ventilator

  • Selfhosted @lemmy.world
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    SMTP provider

  • Biodiversity @mander.xyz
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    Visit at Meise Plantentuin

  • Botany @mander.xyz
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    Visit at Meise Plantentuin

  • Buy It For Life @lemmy.world
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    Electric Kettle

  • Gardening @lemmy.world
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    Huge tomato and bean flowers

  • Arduino @programming.dev
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    Lil plotting library

  • Gardening @lemmy.world
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    Things are groooowing!

  • Django @programming.dev
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    Django CMS vs Wagtail

  • Gardening @lemmy.world
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    Beans are coming!

  • Backyard Chickens (and Other Birds) @lemmy.ca
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    First egg!

  • Guix @lemmy.ml
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    The goblin and the shepherd

    spritely.institute /news/spritely-nlnet-grants-december-2023.html
  • Gardening @lemmy.world
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    Waiting to get their roots wet outside

  • 3DPrinting @lemmy.world
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    Stepper not moving

  • Bike Commuting @lemmy.ml
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    Daily cycling underwear

  • 3DPrinting @lemmy.world
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    Sharp corner algorithm

  • Sysadmin @lemmy.world
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    Filesystem Hierarchy Standard - Reference Poster / Cheatsheet

  • Linux @lemmy.ml
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    Dark mode in details

    Filesystem Hierarchy Standard - Reference Poster / Cheatsheet

  • Selfhosted @lemmy.world
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    Added dark mode

    Filesystem Hierarchy Standard - Reference Poster / Cheatsheet