A frequent example that appears in projects on Hackaday is the reading of utility meters, and in that arena [jomjol] has a very neat solution involving an ESP32 camera module and a software neural ...

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We just got our hands on some engineering pre-samples of the ESP32-C3 chip and modules, and there’s a lot to like about this chip. The question is what should you compare this to; is it more an ...

pH meters are electric appliances used for measuring the- alkalinity or acidity of a solution. pH is measured using potentiometric methods or pH indicators such as indicator solutions or strips ...

Measures moisture levels from 0 to 100% Measures soil pH levels from 3. 5 to 8. 0 Number of items: 2 Included components: HB-2 and 12 condition films ...

The image at right shows the pH scale labeled with common substances. pH measurements are typically conducted using a pH meter. This device uses a glass electrode connected to an electronic meter. pH ...

This potential difference is measured by a pH meter and converted to a pH output. When probe is immersed in an alkaline environment, the H+ ions migrate outside of the probe, leaving an excess of OH- ...

The most accurate method of determining soil pH is by a pH meter. A second method which is simple and easy but less accurate then using a pH meter, consists of using certain indicators or dyes. Many ...

From formal lab tests to DIY baking soda and vinegar, here's how to choose which method is best for your garden, lawn and ...

The best soil moisture meters are easy to use, have clear displays, and provide added data like soil pH, temperature, and sunlight exposure. Only a lab test can truly assess the composition of ...

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Energy bills are a growing concern. Many of us are making changes to our energy usage to keep our bills as low as possible, with smart meters ‒ which display how much energy we're using ...