# ispindel_kicad
iSpindel DIY continuous hydrometer, for measuring the realitive gravity / density of wort. Meant as an educational project for [https://kwbg.nl KWBG].
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
switch so you can use a magnet to reset the iSpindel without opening the container.

# Why Bat43???

It seems to me that the selection of the diode to be a schottky is a critical one here!
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.
Therefore, this leaves 500mV where the BAT43 will drop around 300mV or more. So a regular silicium diode will fail in this setup!
Using a BAT43 or better is a requirement so to speak.

found here [[https://github.com/universam1/iSpindel/issues/59 iSpindel/issue/59]]

Previous work:
* [https://www.ispindel.de/ iSpindel - DIY electronic Hydrometer] 
* [https://www.opensourcedistilling.com/ispindel/ iSpindel by TheJeffrey]
