NEW !!! Full differential PI front end.

[6666]

Paul,

Keep in mind that using an image server like postimage.org means that eventually your images will disappear from this thread, rendering it useless. It would be better to post images using the forum's 'attachment' method; they are then permanent.

- Carl

And in 2016, some images have dropped off.

[moodz]

I thought it would be a good idea to begin the new thread from scratch, in order to remove all the usual preamble that occurs when a project is just getting started.

Hmm ... you also have a good point. There is a lot of side discussion in the original thread that might cloud the clarity of the project thread.

[Qiaozhi]

Hi Qiaozhi,

thank you. I would expect, that this thread could also be moved into the topic section there. This would make sense. Of course, if moodz agrees to this idea.

Merry Christmas.
Aziz

Good idea Aziz.

I thought it would be a good idea to begin the new thread from scratch, in order to remove all the usual preamble that occurs when a project is just getting started.

[moodz]

Hi Qiaozhi,

thank you. I would expect, that this thread could also be moved into the topic section there. This would make sense. Of course, if moodz agrees to this idea.

Merry Christmas.
Aziz

Good idea Aziz.

[Aziz]

The Differential Front-End PI forum is open for business. You can find it at the top of the list in the Projects section.

Hi Qiaozhi,

thank you. I would expect, that this thread could also be moved into the topic section there. This would make sense. Of course, if moodz agrees to this idea.

Merry Christmas.
Aziz

[moodz]

The Differential Front-End PI forum is open for business. You can find it at the top of the list in the Projects section.

Thanks very much.

[Qiaozhi]

Thanks Qiaozhi ... as there have been many helpful suggestions and input on this thread just call it the Differential Front-End PI.

Thanks .... moodz.

The Differential Front-End PI forum is open for business. You can find it at the top of the list in the Projects section.

[Aziz]

Thanks all ..... Aziz .. the internal ADC is "supposed" to be able to run at 1MSPS however the best I can do without high conversion errors is 750K. .... which will work ... I would rather it ran at 1 meg.

Moodz.

It's still high enough. Consider, I am using a much lower sample rate (96 k) and is still running good.

We urgently need a nice, less pin count, high performance DSP with internal 16 bit resolution ADC. 500k - 1 MSPS should be high enough. Damn, but the high performance DSP's have lots of pins.

Aziz

[moodz]

I can do that for you. What do want to call it ... "Moodz Differential Front-End PI"?

Thanks Qiaozhi ... as there have been many helpful suggestions and input on this thread just call it the Differential Front-End PI.

Thanks .... moodz.

[moodz]

Hi moodz,

I like it. It's a marvellous KISS principle now.
Merry christmas & happy new year.
Aziz

PS: Internal 10-bit ADC at 1 MSPS?

Thanks all ..... Aziz .. the internal ADC is "supposed" to be able to run at 1MSPS however the best I can do without high conversion errors is 750K. .... which will work ... I would rather it ran at 1 meg.

Moodz.

[Qiaozhi]

PS Carl ... how about a project page for this puppy ??

I can do that for you. What do want to call it ... "Moodz Differential Front-End PI"?

[Geo]

Congratulation... fantastic project!!

Merry Christmas

[Aziz]

Hi moodz,

I like it. It's a marvellous KISS principle now.
Merry christmas & happy new year.
Aziz

PS: Internal 10-bit ADC at 1 MSPS?

[J_Player]

Thank you Moodz, Tinkerer, and all the other contributors to this brilliant project.

WM6 is correct...
The best MD news of year 2010 (and maybe of 2011 too) for amateur homebuilders.
Of course, it needs field testing and final tweaking, but it is essentially complete.

This model T version is intended as a no frills PI detector with some nice advantages from a differential front end, and at a minimal price.
But because of the coding in the PIC, this same "model T" design can easily be upgraded to the Rolls Royce version or anything in between.
An ameteur builder can simply decide how much he wants to spend on hardware.

Thanks again for a great project, just in time for Christmas!

Best wishes,
J_P

[WM6]

Dear moodz,

this is the best MD news of year 2010 (and maybe of 2011 too), for us amateur homebuilders.

Congratulations and thank you very much.

I highly appreciate your work, knowledge and and unselfish willingness to share this with us.

I hope Carl (or Qiaozhi) give us dedicated project page soon.

What are your further plans regarding FPGA?

Wish you success in "puppy" terrain tests, Marry Christmas and all the best in 2011.