18 lines
1 KiB
Markdown
18 lines
1 KiB
Markdown
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# ispindel_kicad
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iSpindel DIY continuous hydrometer, for measuring the realitive gravity / density of wort. Meant as an educational project for [https://kwbg.nl KWBG].
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We created footprint for the various parts on the PCB. These can be found in the /libs dir in the repo. Furthermore we replaced the reset switch with a reed
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switch so you can use a magnet to reset the iSpindel without opening the container.
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# Why Bat43???
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It seems to me that the selection of the diode to be a schottky is a critical one here!
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According to the datasheet, the min. Input Low Voltage must be < 0.25×VIO while the Output Low Voltage is up to 0.1×VIO.
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Therefore, this leaves 500mV where the BAT43 will drop around 300mV or more. So a regular silicium diode will fail in this setup!
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Using a BAT43 or better is a requirement so to speak.
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found here [[https://github.com/universam1/iSpindel/issues/59 iSpindel/issue/59]]
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Previous work:
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* [https://www.ispindel.de/ iSpindel - DIY electronic Hydrometer]
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* [https://www.opensourcedistilling.com/ispindel/ iSpindel by TheJeffrey]
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