Looking for Pi ADC and there seems very little choice

Would this one do the job?

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Cheers, 
John

USB soundcard?

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-Toby 
Add the word afiduluminag to the subject to circumvent my email filters.

4 (for 8 differential inputs) or 2 (for 8 single-ended inputs) of this 16-bit adc via i2c?

The 12bit version is about 4x faster

Yes, thank you, that seems to be what I want. A *bit* on the pricy side but not too bad I suppose.

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Chris Green

Yes, but how easily will two of those mount on a Pi?

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Chris Green

Not. They?re for on a breadboard or otherwise external project build, with wires to the Pi gpio pins.

OK, not a *big* problem but it does make it all rather messier. I'm surprised that there aren't any (or many, at least) Pi Hats with A-D on them.

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Chris Green

When I looked at this problem I concluded that actually a totally different PIC would be what was needed to turn 48 analogue inputs into USB data....

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Climate Change: Socialism wearing a lab coat.

If you want A2D dont use a Pi, basicallly

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Climate Change: Socialism wearing a lab coat.

There are plenty, but not always easy to find. I used this as the search term "pi hat with analogue to digital converter".

If you want 8 differential 24 bit channels, then you may have a problem.

Stephen

--
Stephen Pelc, stephenXXX@mpeforth.com 
MicroProcessor Engineering Ltd - More Real, Less Time 
133 Hill Lane, Southampton SO15 5AF, England 
tel: +44 (0)23 8063 1441 
web: http://www.mpeforth.com - free VFX Forth downloads

Look at Sequent Microsystems Mega-IO, which is stackable four deep. There are UK suppliers.

Stephen

--
Stephen Pelc, stephenXXX@mpeforth.com 
MicroProcessor Engineering Ltd - More Real, Less Time 
133 Hill Lane, Southampton SO15 5AF, England 
tel: +44 (0)23 8063 1441 
web: http://www.mpeforth.com - free VFX Forth downloads

I don't, I currently use a Beaglebone Black. However I was wondering if the Pi was a viable alternative as the BBB gets older. It would appear not.

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Chris Green

I don't need differential and I don't need 24-bit. Your search term above produces some useful hits but mostly in US/Canada, I'll need to ask if they will send over here (UK).

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Chris Green

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Chris Green

On Sat, 14 Jul 2018 12:49:51 +0100, The Natural Philosopher declaimed the following:

Maybe a Beaglebone Black? 7 ADC in, PWM outs. Granted, a slower processor (1GHz for current model) and a less RAM, but built-in eMMC along with uSD card slot, and "real" Ethernet. Lot's more exposed I/O pins.

Or down to no-OS microcontrollers (well, TI-RTOS is available) TIVA TM4C123: 12-channels (shared) 12-bit ADC

{Side comment: the TM4C123 has an obscene arrangement of timers -- 6 64-bit which can be split into 12 32-bit timers, and 6 32-bit which can be split into 12 16-bit}

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	Wulfraed                 Dennis Lee Bieber         AF6VN 
	wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

Is the AMBA address / data bus available on the Pis?

With a one off price of US$35, the one-off UK prices make sense. Having imported US boards in the past, I can assure you that the UK price is not unreasonable for a low volume part.

Stephen

--
Stephen Pelc, stephenXXX@mpeforth.com 
MicroProcessor Engineering Ltd - More Real, Less Time 
133 Hill Lane, Southampton SO15 5AF, England 
tel: +44 (0)23 8063 1441 
web: http://www.mpeforth.com - free VFX Forth downloads

That should vanish once we exit the EU

I tried importing somne gears once. They ended up 2.5 times the price with shipping importt duty, handling charge to collect import duty, VAT on handling charge to collect import duty...

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"Socialist governments traditionally do make a financial mess. They  
always run out of other people's money. It's quite a characteristic of them" 

Margaret Thatcher