Weather station : Solar powered rain gauge - Pluviometer V2

This is a wireless tipping bucket rain gauge powered by a little solar cell and a supercapacitor.
After calibration test, each swing of the bucket is 1.15mL. Funnel radius is 80mm, then each swing mean 0.057mm of rain (on 1 m²).

To build the rain gauge, you need :

• A rod of 3mm diameter and 30mm length (steel, aluminium...)
• A reed switch 1.8x7mm
• A round neodymium magnet 4x2mm
• Silicone rubber for waterproofness (like kafuter).
• Strong glue for the magnet
• 20x5mm round neodymium magnet with hole, for magnetic feet. My rain gauge is on a metal wall coping. If you want another support, draw your own feet part.

Some screws :

• 2x M4x16 (Extension arm)
• 4x M4x25 (Feet)
• 4x M3x20  Sensor box cover
• 4x M2.5x10  Bucket holders
• 5x M3x6    Solar cell, sensor and sma holder
• 4x M2.5x5 PCB
• 4x M4x10 countersunk (Magnet on feet)

Seal parts are printed with TPU filament.

For the Funnel, be carreful to make a X or Y rotation in your slicer, and not a Z mirror, otherwise the threaded will not work.

More details here (in french) : https://www.sanglierlab.fr/2025/02/22/station-meteo-v2-le-pluviometre/