3d Filament Moisture monitor

prusaprinters

<p>I have been storing my filament in 5 gallon buckets for a few years now and I always replace the dessicant packets every once in a while to keep things dry.</p> <p>This will eventually be attached to my Red node server but it's just a simple display now which you can buy for $5 on amazon. Only practical if you hook it via IOT.</p> <p>I was working on a remote moisture monitor and just for the fun of it I threw it in one of my buckets to see what the humidity was inside the bucket after it was closed over night. I was shocked to see I was at 45 percent the next morning. So I threw out the dessicant packets and put in a couple of 40 gram SG-40 Silica Gel containers and tried it again. Ah, down to 4 percent so that's good. I had to dry out the spools I had in a oven and then replace them into the bucket and the humidity has stayed below 15 percent as I had hoped. I don't believe the packets would dry out your spools but they should remove the moisture in the air to prevent them from going bad.</p> <p>The jest of this is you don't know what the humidity in the bucket is unless you have a way to measure it with the lid closed so here is a simple little project that allows you to check your humidity level with the press of a button. The button is a common 6mm square switch used on just about everything with a keyboard.</p> <p>Using a WROOM ESP32 with display and a BME280 I2C module and code from <a href="https://randomnerdtutorials.com/">https://randomnerdtutorials.com/</a> it was a hour project to assemble. I printed up a case and a simple mount for the Gel packs to mount inside the bucket.</p> <p>I have included a solid lid if you have a different board you might like to use.</p> <p>Here is a list of the parts I used, you probably have most of this stuff so the sensor and ESP32 are all you need to get going.</p> <p>As always look at the photo's to see the assembly.</p> <p>Have fun and keep your powder dry.</p> <p>Cheers</p> <p>Kisssys</p> <p>BME280 https://www.amazon.com/gp/product/B085WCRS7C/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&amp;psc=1</p> <p>ESP32 WROOM with display https://www.amazon.com/gp/product/B07SN3GJ2R/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&amp;psc=1</p> <p>3 AAA holder https://www.amazon.com/gp/product/B0156U82JY/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&amp;psc=1</p> <p>HYDROSORBENT SG_40 https://www.amazon.com/gp/product/B015OTBKAA/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&amp;psc=1</p> <p>5 gallon can <a href="https://www.lowes.com/pd/United-Solutions-5-Gallon-Paint-Bucket/3734787">https://www.lowes.com/pd/United-Solutions-5-Gallon-Paint-Bucket/3734787</a></p> <p>Bucket Lid <a href="https://www.lowes.com/pd/Encore-Plastics-12-in-White-Plastic-Bucket-Lid/50094688">https://www.lowes.com/pd/Encore-Plastics-12-in-White-Plastic-Bucket-Lid/50094688</a></p> Category: 3D Printer Accessories