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Type: Posts; User: edwardw

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    Re: Hive Weight Measuring Device

    How do you surf the web and work with the bees? Those activities seem mutually exclusive. Or do the bees like to surf the web?

    I have no plans on adding WiFi to it. The complexity, cost and...
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    Re: Hive Weight Measuring Device

    I don't have any pictures now. Right now it is breadboarded. I haven't etched the final PCB's yet. Also, a 2GB memory card will last a long time. 1 year takes a little over 100 MB. The final one...
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    Re: Hive Weight Measuring Device

    I took the sensors and hooked them up to a microprocessor that runs the code to check and convert them every minute. It also had an SD card connected and logs the data to their.

    It can either run...
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    Re: Hive Weight Measuring Device

    The load cells are less than $30, and when weighing the hive give a resolution of 1/20th of a pound. The accompanying data logger isn't much more, but if you want to add an LCD and interface the...
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    Re: Hive Weight Measuring Device

    The thin film force resistors I've seen have a lot of drift over time and don't have repeatability. They are very good at telling you if there is pressure on something, just not how much over time....
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    Re: Hive Weight Measuring Device

    Here is a .PDF of the physics of weighing objects where the density is not uniform, eg off center mass. This allows to you accurately weigh a hive by weighing from both sides and not double counting...
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