Dear Ytai and All, We were choosing http://www.mouser.com/ds/2/96/008-0256-0-786323.pdf to be used as an external oscillator. Any comments or suggestions? Best Regards
On Friday, 9 December 2016 05:00:57 UTC+5:30, Ytai wrote: > > No special tips. Just make sure every component you use is rated for this > range and that its critical parameters within the desired range across the > temperature range you want to support. > > On Dec 7, 2016 11:55 PM, "P.S" <[email protected] <javascript:>> wrote: > >> Dear Ytai, >> I will be starting to make a version of IOIO with Crystal and opensource >> it. Any tips with respect to hardware/software design so that the board can >> withstand higher ambient temperature? >> >> Thanks in advance >> >> >> On Saturday, 9 July 2016 01:00:24 UTC+5:30, Ytai wrote: >>> >>> The table titled "internal RC accuracy" in the datasheet specifies a >>> typical 0.15% deviation, but a worst case 1% across the temperature range. >>> USB's nominal requirement is 0.25%. So if you want to be 100% certain you'd >>> need to add a crystal to the circuit (and make a configuration flag change >>> in the bootloader). Otherwise, you can characterize it yourself and see how >>> bad it actually gets. >>> >>> On Fri, Jul 8, 2016 at 5:18 PM, Pranay Sharma <[email protected]> >>> wrote: >>> >>>> HI Ytai, >>>> I checked the data sheet of the PIC micro used in IOIO board but I am >>>> not able to figure out which graph to see to understand the oscillators >>>> behaviour to temprature changes. >>>> Further, is there a link to exact BOM of the parts used for IOIO with >>>> exact part names? >>>> Thanks for your time >>>> >>>> On Friday, July 8, 2016 at 6:56:40 AM UTC+5:30, Ytai wrote: >>>>> >>>>> I haven't done any work to characterize the temperature range or >>>>> design for a specific one. You'd have to do that be checking the >>>>> datasheets >>>>> of the individual parts. I'm assuming that 85C should be safe for most if >>>>> not all parts. Another thing you'd need to evaluate is how stable the >>>>> internal oscillator of the PIC is across the temperature range. USB is >>>>> pretty picky about the precision of its clock. >>>>> >>>>> On Wed, Jul 6, 2016 at 12:59 PM, Pranay Sharma <[email protected] >>>>> > wrote: >>>>> >>>>>> Dear ALL, >>>>>> Could someone put some light on what are the temperature ranges for >>>>>> proper operation of the IOIO board. >>>>>> >>>>>> I was thinking to use this board for a product which would be put >>>>>> outdoors where maximum temperature in summers is 45Deg Celcius. >>>>>> So the expected temperature inside the board could easily reach 55deg >>>>>> or 60Deg. >>>>>> >>>>>> BR >>>>>> Pranay >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "ioio-users" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected]. >>>>>> To post to this group, send email to [email protected]. >>>>>> Visit this group at https://groups.google.com/group/ioio-users. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "ioio-users" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at https://groups.google.com/group/ioio-users. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "ioio-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> Visit this group at https://groups.google.com/group/ioio-users. >> For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
