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  • hertzclone commented on karlli's instructable Ultrasound Tank Level Meter3 months ago
    Ultrasound Tank Level Meter

    I assume your response was directed to my questions/comments. Agreed the Bluetooth did not work, I'll look into the AM/FM as you suggest. There are no sight glasses, and the tall tanks have a capacity of 2000 gallons so there are quite large. As I can get weekly deliveries the tanks will likely never have more that 28: of product in them. So the sensors will be quite a distance from the oil. There are threaded bungs on the top of the tank, my thought is to use a male threaded plug, drill and mount the sensor to it and the Arduino would be outside the tank.

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  • hertzclone commented on karlli's instructable Ultrasound Tank Level Meter3 months ago
    Ultrasound Tank Level Meter

    Thanks for sharing this, it has given me a possible solution to an issue we've been trying to solve for some time. I have six bulk lubrication tanks that I need to keep an accurate inventory of. Two of these tanks are 72" tall and while using a tape measure is possible, it is messy and can be inaccurate. This project looks like a possible solution to this issue. My thought is to make a sensor for each of the tanks, then acquire a selector switch which would me to use a single display. Either by pushing a button or turning a knob to select which sensor to display. So a few questions, is the coding for the depth the sensor will read in the board for the sensor or at the display? As I said the tanks have different heights so I would need a way to have the different depths read correct...

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    Thanks for sharing this, it has given me a possible solution to an issue we've been trying to solve for some time. I have six bulk lubrication tanks that I need to keep an accurate inventory of. Two of these tanks are 72" tall and while using a tape measure is possible, it is messy and can be inaccurate. This project looks like a possible solution to this issue. My thought is to make a sensor for each of the tanks, then acquire a selector switch which would me to use a single display. Either by pushing a button or turning a knob to select which sensor to display. So a few questions, is the coding for the depth the sensor will read in the board for the sensor or at the display? As I said the tanks have different heights so I would need a way to have the different depths read correctly. Any idea what type of switches or selector would work for this? I guess I could use a single power supply and power all the sensors and display rather than have to switch power on and off as the selection is being made. Currently there are Bluetooth enabled sensors but due to the construction of the building and the metal tanks, these are not working well enough to be relied upon. Thank you for sharing this and for your responses to my questions in advance.

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  • hertzclone made the instructable ATX to Lab Bench Power Supply Conversion10 months ago
    ATX to Lab Bench Power Supply Conversion

    Hello, if one used LEDs that are 12 volt compatible are the 330 ohm resistors you have shown still needed? I intend to include a 3.3 volt output on mine, I also have purchased this output meter and will have it tied to the 12 volt output as it will be used more often than the others in my situation. I'm still uncertain of how to connect it to read the amps, the instructions were non existent, this is what I want to use, I used pairs of binding posts instead of the common ground as you did.

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