Blars
Posts: 88
Joined: Sun Aug 28, 2011 3:22 am
Contact: Website

Re: Analog I/O

Sun Aug 28, 2011 7:19 am

Many microcontrolers and some ARM chips offer on-chip analog to digital and
less commonly digital to analog. This is usually an alternative to GPIO selected per-pin. Does the chip selected offer this on the pins available via the GPIO connector, or will we need to use external I2C or SPI converters to get analog I/O. (A PIC or AVR may be the cheapest way to do that.)

elatllat
Posts: 1338
Joined: Sat Dec 17, 2011 5:05 pm

Re: Analog I/O

Wed Feb 17, 2016 12:36 am

No Analog.
4k or USB3 : hardkernel.com

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DirkS
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Joined: Tue Jun 19, 2012 9:46 pm
Location: Essex, UK

Re: Analog I/O

Wed Feb 17, 2016 1:02 am

elatllat wrote:No Analog.
This must be the mother of all necros...

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mikronauts
Posts: 2621
Joined: Sat Jan 05, 2013 7:28 pm
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Re: Analog I/O

Wed Feb 17, 2016 4:32 am

No analog inputs.

I normally use MCP3008 & MCP3208 ten and twelve bit (respectively) eight channel ADC's

See http://www.mikronauts.com/raspberry-pi/ ... and-howto/
Blars wrote:Many microcontrolers and some ARM chips offer on-chip analog to digital and
less commonly digital to analog. This is usually an alternative to GPIO selected per-pin. Does the chip selected offer this on the pins available via the GPIO connector, or will we need to use external I2C or SPI converters to get analog I/O. (A PIC or AVR may be the cheapest way to do that.)
http://Mikronauts.com - home of EZasPi, RoboPi, Pi Rtc Dio and Pi Jumper @Mikronauts on Twitter
Advanced Robotics, I/O expansion and prototyping boards for the Raspberry Pi

W. H. Heydt
Posts: 7434
Joined: Fri Mar 09, 2012 7:36 pm
Location: Vallejo, CA (US)

Re: Analog I/O

Wed Feb 17, 2016 4:44 am

DirkS wrote:
elatllat wrote:No Analog.
This must be the mother of all necros...
No kidding. Almost 4.5 years...

elatllat
Posts: 1338
Joined: Sat Dec 17, 2011 5:05 pm

Re: Analog I/O

Wed Feb 17, 2016 5:18 am

W. H. Heydt wrote:
DirkS wrote:
elatllat wrote:No Analog.
This must be the mother of all necros...
No kidding. Almost 4.5 years...
I hope Blars is happy with 'better late than never'.
4k or USB3 : hardkernel.com

FAQ : raspberrypi.stackexchange.com

https://google.com/search?q=site%3Awww.raspberrypi.org+search+first

https://www.raspberrypi.org/forums/search.php?search_id=unanswered

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buja
Posts: 417
Joined: Wed Dec 31, 2014 8:21 am
Location: Netherlands

Re: Analog I/O

Wed Feb 17, 2016 6:17 am

elatllat wrote: I hope Blars is happy with 'better late than never'.
I'm afraid not: looking at his profile, Blars' last visit was in November 2012 ...

mosespi
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Re: Analog I/O

Wed Feb 17, 2016 6:35 am

Cue up a reply from 2020...

"Sure, the Pi 6 B++ has twelve 48-bit ADCs on the original GPIO ports 10-22... but good luck finding those old 0.1" headers anymore!"
Power problems? MoPower UPS for the Pi
http://www.allspectrum.com/mopower/

texy
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Re: Analog I/O

Wed Feb 17, 2016 7:24 am

I'm pretty sure those headers will still be here in 4 years time....2120 however.....

Texy
Various male/female 40- and 26-way GPIO header for sale here ( IDEAL FOR YOUR PiZero ):
https://www.raspberrypi.org/forums/viewtopic.php?f=93&t=147682#p971555

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