Per Log

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Revision as of 20:19, 26 October 2025 by Per (talk | contribs) (Created page with "== Sun Oct 26, 2025 == Hello world. Looked at https://wiki.opensourceecology.org/wiki/Cordless Drill Construction Set and youtube videos about the Open Source Blueberries. === Drill Notes === Seems like a good project for me to learn about power electronics, CAD and get started with prototyping. I have a Ryobi RCD1802 that I will use as inspiration and benchmark. Costs roughly $150 here in Norway including battery and a bag. ==== Battery pack ==== * Ryobi battery i...")
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Sun Oct 26, 2025

Hello world. Looked at [Drill Construction Set] and youtube videos about the Open Source Blueberries.

Drill Notes

Seems like a good project for me to learn about power electronics, CAD and get started with prototyping. I have a Ryobi RCD1802 that I will use as inspiration and benchmark. Costs roughly $150 here in Norway including battery and a bag.

Battery pack

  • Ryobi battery is 18V 2.5Ah = Five 18650 cells in series. Can just go for that.
  • Challenge with 18650 is that a Battery Management System is basically mandatory for Li-ion, to not burn down all the Seed Eco homes.

Off the shelf vs make

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