Hi John, These are very helpful links. I was wondering if there was an online document on all functions that I can code BBB in either in C, C++, python, etc.
Thanks, Chelsea On Thu, Dec 3, 2015 at 11:12 PM, John Syne <john3...@gmail.com> wrote: > Hi Chelsea, > > Here are some reference I have found helpful: > > > http://www.analog.com/library/analogdialogue/archives/39-05/op_amp_applications_handbook.html > > http://www.analog.com/library/analogDialogue/archives/39-06/data_conversion_handbook.html > > Regards, > John > > > > > On Dec 3, 2015, at 5:57 PM, Chelsea Orefice <coref...@smith.edu> wrote: > > Hi John, > > Just wanted to say thank you for really helping me with this. It has been > a struggle for me and my team to get help from different resources at > school as well as our liaisons where we are getting our design requirements > from. (This is our senior engineering project.) > > I am having still a little difficulty in understanding how the circuitry I > shared with you may give me a single input instead of differential that the > ADC requires.I attached the actual design of the system, so if you could > help me understand how it won't work it'd be much appreciated. > > Also, may you tell me your background in relation to all of this? You are > very knowledgeable in this area, and when I relay some of this information > to my team I would like to share from whom I received this information > from. > > > Sincerely, > Chelsea > > On Thu, Dec 3, 2015 at 7:01 PM, John Syne <john3...@gmail.com> wrote: > >> Hi Chelsea, >> >> I have cc beagleboard because someone else might learn from this >> discussion. Looking at the link you provided, it won’t work because ADS1278 >> requires a differential input. Look at page 39 for circuits that will work >> for you. >> >> Regards, >> John >> >> >> >> >> On Dec 3, 2015, at 3:52 PM, Chelsea Orefice <coref...@smith.edu> wrote: >> >> My apologies. Please let me know if this link works. (You will need to >> just copy and paste in search bar). If that doesn't work I will send it as >> an attachment. Will also look at the diagram as well. >> >> http://cnx.org/resources/72628d36f0c24bc80ff94e5c0bf6df2b27a >> 86751/opamp4.png >> >> Thanks again, >> Chelsea >> >> On Thursday, December 3, 2015 at 6:46:49 PM UTC-5, john3909 wrote: >>> >>> Look at page 39 for a suitable input circuit. >>> >>> Regards, >>> John >>> >>> >>> >>> >>> On Dec 3, 2015, at 3:03 PM, Chelsea Orefice <core...@smith.edu> wrote: >>> >>> Hi John, >>> >>> Thanks for getting back to me. I was actually looking at that same ADC >>> converter as you posted in your reply. Just looking for some clarification >>> on a few things. What type of error would a simple resistor divider >>> introduce into the system? I am currently using a cascaded inverting op >>> amp system. Not really sure if this will scale the input voltage to a level >>> that is compatible with my ADC. >>> >>> The circuit diagram looks like this: >>> [image: Inline image 1] >>> >>> Looking forward to your reply, >>> Chels >>> >>> On Thursday, December 3, 2015 at 5:07:41 PM UTC-5, Chelsea Orefice wrote: >>>> >>>> Hi everyone, >>>> >>>> I am new to the world of using MCUs and am looking for some assistance >>>> on a project that I am currently working on. To sum things up quickly, I am >>>> building a data aggregation unit that can convert analog voltage readings >>>> to digital values that is to be stored on a USB or SD card. The DAU will >>>> collect 3 types of signals, a buffer signal, clipped signal, and a signal >>>> passed through a LPF. In the end, the data should be stored as either a >>>> MatLab file or .xml file. However, I am facing a few road blocks relating >>>> to my design. >>>> >>>> 1.) I need to use a 24 bit ADC for high resolution purposes based on >>>> design requirements that were just given to me as I will be collecting data >>>> from .1mV to 50V and it has to have a high sample speed rate. Has anyone >>>> connected an external ADC to the BBB? If so, what was the brand of your >>>> external ADC? How did you connect the ADC to the BBB? (It'd be greatly >>>> appreciated to be able to see a design). >>>> >>>> 2.) If you have had a similar project to this, was wondering how you >>>> went about it. Any advice would be greatly appreciated. >>>> >>>> >>>> As I said before, all of this is very new to me. So thank you for >>>> taking the time to help me out. >>>> >>>> Chelsea >>>> >>>> >>>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to beagleboard...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> >> > <buffer system.PNG> > > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
