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You would have to use a different sensor. They do have the "same" sensor with different ratings and several of them do positive pressures.
Finding the port is a hard problem that is finiky based on how many comm port devices are attached.This is where the code starts, https://github.com/Makuna/Tbs4RpmWin/blob/master/Tbs4Rpm/MainWindow.xaml.cs#L291and it calls this to enumerate portshttps://github.com/Makuna/Tbs4RpmWin/blob/master/Tbs4Rpm/MainWindow.xaml.cs#L228and uses this to identify the port as being the TBShttps://github.com/Makuna/Tbs4RpmWin/blob/master/Tbs4Rpm/MainWindow.xaml.cs#L262You would have to debug the code to see why its skipping the port you have it on.
Weller WES51 Soldering Station. I have had it for many years and they still sell the same model today.
In the method private string FindPortName(List<string> portsSkip)you will see this lineif (portName.Length > 4) // skip COM5this is the problem. I had to add that due to have other USB devices that exposed a serial port that would choke if probed by the code in another place. This is suppressing all com ports that are single digit.
In this [picture](http://www.instructables.com/file/F9K6S5XH2G5ZUVS) it shows the board layout, with labels showing connecting to the Arduino A0 - A3 directly.The board was designed as a shield, so it just plugs directly on the top of the Arduino.
There is nothing specific in the code about the connection to computer. It treats it as a serial device. But I have never tested this configuration.The connection to the sensors also follows standard pin setup so it should work if plugged into any 5v Arduino.
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