Homemade NMEA multiplexer

But then I had a horrible premonition. That would just start the whole process again from the software engineers barking at me...'You should have done a shift instead of a divide' etc.
Yes, this is *SO* representative of my impression of you and how you act. Why would you object to anyone pointing out that a shift would be more efficient or more clear than a divide? If anyone has suggestions on improvements for you, why not just take them and be happy, or ignore them and still be happy?

You don't have to treat everything as a personal attack on you, just because someone says something else than "Oh, what a nice little project", but instead says "if you do like this or that, it will work better".

If someone want to help you improve your design for free, why be so negative about it. It's like it is your baby and no one can touch it, or what? No one is forcing you to take the suggestions either, but you don't need to start arguing about them either, if you are not prepared to take a discussion on the subject.

I am installing a through hull DST800 transducer with a fairing block... If someone professional installer had comments about how to do that and material choice, I would be more than happy to get them. I thought that was the very purpose of the forum, to be able to discuss these things, but it seems this forum should only be used to pat each other on the shoulder and say "what a nice job you have done"...
 
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Well when the electronic attack dog up their claimed that I hadn't written the code for the soft UART, I was going to post a whole load of C source.

But then I had a horrible premonition. That would just start the whole process again from the software engineers barking at me...'You should have done a shift instead of a divide' etc.

Maybe I should post details of the plastic box it sits in so the industrial designers can come in and have a chew :D.

An option for avoiding code is programming the soft UART in a visual language such as Statecharts. If I dig back a few years I could probably find you a program I wrote that will translate a Statemate model of the system into bytecode for a virtual machine that implements the model. All you would need to do then is implement the virtual machine on the pic. Obviously it won't work properly but it will give you an authentic Airbus feel.
 
Yes, this is *SO* representative of my impression of you and how you act. Why would you object to anyone pointing out that a shift would be more efficient or more clear than a divide? If anyone has suggestions on improvements for you, why not just take them and be happy, or ignore them and still be happy?

You don't have to treat everything as a personal attack on you, just because someone says something else than "Oh, what a nice little project", but instead says "if you do like this or that, it will work better".

If someone want to help you improve your design for free, why be so negative about it. It's like it is your baby and no one can touch it, or what? No one is forcing you to take the suggestions either, but you don't need to start arguing about them either, if you are not prepared to take a discussion on the subject.

I am installing a through hull DST800 transducer with a fairing block... If someone professional installer had comments about how to do that and material choice, I would be more than happy to get them. I thought that was the very purpose of the forum, to be able to discuss these things, but it seems this forum should only be used to pat each other on the shoulder and say "what a nice job you have done"...

Where does a discussion become an argument? He's worked for many years writing embedded code. I'd prefer a blue development board myself rather than a red one.
 
Here's a small plastic box I was intending using. I can buy it from RS for £2.32...

n78bq.jpg


Any industrial designers out there who want to have a rabid chew?

Just to clear any confusion, it comes in 3 colours and sizes, each displayed above, but I only need one. Otherwise they are basically the same. I was intending choosing the centre one, but I expect professional marketing people will probably disagree.
 
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Anyway, to get back on track.....


You'll be needing a splitter to distribute your multiplexed signal.

Here's one I knocked up:

Fully functioning 2 port splitter with universal connectivity option. It uses a PIC16F84, but only because it was already stuck to the insulating tape. I should be able to knock them out for about £232 each. Let me know how many you want, and we can work out a deal.

DSC_8906.jpg


:rolleyes:
 
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