[PSUBS-MAILIST] SEMjr - DIY Electronic Project

[David Colombo via Personal_Submersibles]

Jon, great job! This will be a great resource. This will be my next project
for my VAST sub over the winter.
David

On Fri, Nov 27, 2020, 9:51 AM Jon Wallace via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> I have created a new page at http://www.psubs.org/community/projects/SEM1/  describing
> a DIY project called SEMJR for building an electronic Submarine Environment
> Monitor which includes O2, CO2, Barometer, Temperature, and Humidity which
> should be valuable for anyone looking to supplement or upgrade from analog
> to digital devices.
>
> A Bill Of Materials for all elements of the project is also available on
> the web site.  Additionally, written instructions will be provided and an
> instructional video produced in the near future.
>
> I've designed this project to be as simple as I possibly can given the
> sensor components and intended functionality.  While it is intended to be a
> "connect Part-A to Part-B" type of project, it will involve lots of
> soldering as well as some wiring of electronic parts.  Additionally, you
> will need to download and install various software tools on your local
> computer to load the microprocessor with the actual application program
> that interfaces with the sensors.  I suspect some community members may be
> more adapt at this than others and encourage builders to find others in our
> community who can load the software on the microprocessor for them if you
> have have any technical hesitancy in this area.
>
> If you incorporate all four sensors (you can include only the ones you
> need) this DIY project will cost you approximately $370 USD.  The largest
> part of that cost is the O2 and CO2 sensors which cost around $100 each.
>
> Please read the project description file on the website for more detailed
> information.  I expect to release the SEMJR application software before the
> end of December 2020.  It is developed using the Arduino IDE and will be
> released under GNU GPL 3.0 licensing.
>
> Jon
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