[PSUBS-MAILIST] SEMjr - DIY Electronic Project

[Philippe Robert via Personal_Submersibles]

Thank Jon for sharing your work !

I have a question about the Teensy 4.0 microprocessor. What is the
benefit to use the teensy instead of arduino Atmel based microcontroller ?

Regards

Philippe

Le lun. 21 déc. 2020 à 17:31, Alan James via Personal_Submersibles <
personal_submersibles at psubs.org> a écrit :

> Thanks Jon,
> that's a great result.
> An inexpensive way to monitor all the main environmental conditions!
> Alan
>
> On Tuesday, December 22, 2020, 10:50:28 AM GMT+13, Jon Wallace via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> I have finished the SEMJR software and uploaded it to the web site along
> with instructions of how to load the software on the Teensy 4.0
> microprocessor.  If you are familiar with the Arduino IDE you will find it
> a fairly simple and standard process.  If you are not familiar with the
> Arduino IDE or programming, you may find the procedure a bit daunting but
> stick with it and just follow the instructions step-by-step.  If you just
> can't get it and are unsuccessful, consider reaching out to someone who has
> been successful and ask them to load the software on your microprocessor
> for you.
>
> You can also reach out to the mailing list, or Facebook page, and seek
> help getting the loader running from others that are familiar with the
> Arduino IDE, including myself.  We will need to know what operating system
> you are using (MAC, UNIX, Windows) and also what version of that operating
> system you have.
>
> I still need to draft an Operating Manual for the project, although if you
> can get the software loaded it should all just work without any other
> configuration.
>
> I have changed the menus so that O2, CO2, and Po (change in cabin
> pressure) appear on one menu; Barometer, Humidity, and Temperature appear
> on the second menu.  See website for new menu display.  By default, the
> menus cycle automatically with each being displayed for four seconds.  You
> can add a momentary button to the project to manually cycle through the
> menus, or keep one menu displayed on purpose.
>
> Three alarms are built into the software.  If an alarm is set, the alarm
> menu displays the sensor that caused the alarm and holds on that menu until
> all alarms have fallen within acceptable limits.  In other words, if the
> alarm menu is displayed, no other menus are accessible until all alarms
> have been extinguished.  If you get an alarm, SURFACE and deal with it
> there.
> O2 alarms at 19.0 and 23.0 percent.
> CO2 alarms at 5000 ppm
> Po alarms at 2psi (137mbar) below or above whatever the pressure was when
> you started the dive
>
> I'm working on a couple of videos to help envision all this stuff,
> but...you know how it goes.  Video editing is painfully slow, as is the PDF
> documentation.  sigh...geeeeesh.....
>
> Jon
>
>
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