Uploaded September 2019 | Updated September 2026, 3 weeks ago

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I purchased some "printdry" containers and I wanted to quantify how well their vacuum seal was maintained and also how well my desiccant was performing at reducing humidity. I designed a small sensor board that uses a BME280 sensor together with a wireless transmitter module to broadcast temperature, pressure, and humidity readings where they are collected by a raspberry pi. Each sensor is powered by a CR2032 battery. For more electronics and 3D printing projects, see smbaker.com