Zigbee Rain Gauge

prusaprinters

<p>I wanted a rain gauge to plug into my Home Assistant for use with an irrigation system and found this guide: &nbsp;<a href="https://community.home-assistant.io/t/diy-zigbee-rain-gauge/255379/25">https://community.home-assistant.io/t/diy-zigbee-rain-gauge/255379/25</a></p><p>I didn't want to wait for the gauge body being delivered so I remixed the following to fit a Sonoff SNZB-04 door contact sensor: <a href="https://www.thingiverse.com/thing:2849562">https://www.thingiverse.com/thing:2849562</a></p><p>This model replaces 32RainBase.stl.</p><p>To modify the SNZB-04</p><ol><li>Remove circuit board from the case</li><li>Make holes in the case for the wires to pass through&nbsp;</li><li>Unsolder the reed switch</li><li>Solder wire between reed switch and the pads the reed switch was originally attached to. &nbsp;Remember to pass the wires through the case before you finish the soldering</li></ol><p>&nbsp;Calibrate the gauge:</p><ol><li>Use a pipette to fill the tipper making sure to note how many milliliters it takes to tip.</li><li>Repeat 10 times</li><li>Calculate the average by adding up all of your readings and dividing by 10 (mine was 9.5ml)</li><li>Calculate the area of the funnel opening.</li><li>Put the figures into this equation - 1 / ((area / 10) / tip average)</li><li>Use this figure as the mm_per_pulse value in the Home Assistant config linked above.</li></ol>