1. Read temperature of fluid flowing in a pipe.2. Display current fluid temperature on a screen/LED/LCD/whatever such that it can be viewed from 20 feet away.3. Not neccessary, but a flow meter and display would be nice.
Is INPUT and INPUT-PULLUP akin to a normally open and normally closed state?
No.INPUT_PULLUP is the same as INPUT only there is an internal high value resistor (~50 kΩ) between the pin and VCC. You can achieve the exact same result with an external resistor. The resistor prevents the digital input from floating.
There will be flow in the system. The fluids will be water.I definitely want to keep costs down. Do you think there may be a simpler way than off the shelf flowmeter? How about reading pressure on both sides of a know orifice and calculating flow? Think that would be any cheaper?I'm still looking for options on displaying the temperature. what about using a TFT or displaying to a tablet?
If this is about a Project rather than a mid-life-crisis perhaps it needs to move to the Project Guidance section and be re-titled "How to read the temperature of a flowing fluid" ?...R
Get an Arduino UnoDownload and install the Aduino IDE on your PCConnect your PC to your Arduino with the USB cableUpload the BLINK example programEnjoy that level of successMake a copy of the BLINK example programEdit the copy to change the blink rateUpload the revised programEnjoy thatThen explore the other example programs....RPlanning and Implementing a Program
You're telling him to learn the thing that we tell others to avoid like the plague!I'd prefer he started with the 'blink without delay' sketch.
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