How to Ruggedize/Waterproof Electronic Sensors for Long Life Operation: Analog Soil Moisture Sensors

This DIY video demonstrates a new technique for ruggedizing and waterproofing electronic sensors for long life operation in the field.

In this example we to take an off the shelf capacitive analog soil moisture sensor and further ruggedized and and waterproof the moisture sensor for long life operation.

The first step involves protecting the board with multiple coats of conformal PCB urethane seal coating. We then further seal the PCB using a dual-walled protective heat shrink that has also adhesive glue along the inner lining.

DIY Capacitive Analog Soil Moisture Sensor Kits (solder + heat gun required):
https://adosia.io/product/diy-waterpr...

Pre-built ruggedized sensors sold here:
https://adosia.io/product/rugged-anal...

For sealing and protecting electronics from the elements we use CRC Urethane Seal Coat Viscous Liquid Coating:
https://www.amazon.com/gp/product/B00...

Dual-Walled Glue Adhesive Lined Heat Shrink to cover sealed electronics:
https://www.amazon.com/gp/product/B01...

For bonding plastics we use 3M High Strength 90 Contact Spray Adhesive:
https://www.amazon.com/gp/product/B00...

Drip Irrigation 1/4" Tubing:
https://www.amazon.com/gp/product/B00...

Food Grade Crystal Clear Vinyl Tubing, 1/4-Inch ID x 3/8-Inch OD:
https://www.amazon.com/gp/product/B07...


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