Either your battery is finished or there's a short circuit somewhere. In general a 9V battery isn't a great idea for the IOIO, since it will typically not be able to source enough current to maintain charging of the Android. LiPo packs are a great choice for battery powered applications.
On Thu, Jan 2, 2014 at 7:09 AM, Synn Yong Tan <[email protected]> wrote: > Hi, > I used a 9v battery as the power supply of my IOIO OTG. The problem comes > when i connect my IOIO board with UART to RS232 converter on the 5v pin and > gnd, there is no power supply for the IOIO board. What is the problem that > caused this ? OR what are the potential reasons caused this ? > > > On Thu, Dec 19, 2013 at 9:44 PM, Synn Yong Tan <[email protected]> wrote: > >> I see. Then i have to try it out 1st because i just tried the led part >> without connecting the encoder. >> Thanks for your help, Ytai. >> This is a very good discussion groups for all IOIO-users. >> >> >> On Thu, Dec 19, 2013 at 12:11 AM, Ytai Ben-Tsvi <[email protected]> wrote: >> >>> Yes. But what I meant is that your UART didn't get any readings (that's >>> why your program got stuck), so there's probably something else going wrong >>> there. >>> >>> >>> On Wed, Dec 18, 2013 at 5:21 AM, Synn Yong Tan <[email protected]> wrote: >>> >>>> The code is working until i added the UART part into it. So means, i >>>> just have to separate them into two thread instead of one single thread ? >>>> >>>> >>>> On Wed, Dec 18, 2013 at 9:12 AM, Ytai Ben-Tsvi <[email protected]>wrote: >>>> >>>>> A separate thread might make sense in this case, since it will allow >>>>> you to keep the code simple (as opposed to having to assemble strings out >>>>> of fragmented readings). >>>>> Having said that, if your original program got stuck, a separate >>>>> thread wouldn't fix that (it will get stuck too), so you might have >>>>> another >>>>> problem. >>>>> >>>>> >>>>> On Tue, Dec 17, 2013 at 9:05 AM, Synn Yong Tan <[email protected]>wrote: >>>>> >>>>>> I want to get feedback of an absolute encoder through the uart. Means >>>>>> I separate the inputstream and the led to two thread? >>>>>> On 18 Dec 2013 00:57, "Ytai Ben-Tsvi" <[email protected]> wrote: >>>>>> >>>>>>> readLine() will block until a new line sequence appears on the >>>>>>> input. If you want to do that, you'll have to run it on a separate >>>>>>> thread. >>>>>>> What are you *really* trying to achieve? >>>>>>> >>>>>>> >>>>>>> On Tue, Dec 17, 2013 at 8:47 AM, Synn Yong Tan <[email protected]>wrote: >>>>>>> >>>>>>>> ya. the example code works, I also found that the UART part gt >>>>>>>> problem after i tried it part by part. >>>>>>>> But i have no clue for it. Any clue or guide for me to correct the >>>>>>>> code?! >>>>>>>> Thanks for your kind help. >>>>>>>> >>>>>>>> >>>>>>>> On Wed, Dec 18, 2013 at 12:41 AM, Ytai Ben-Tsvi >>>>>>>> <[email protected]>wrote: >>>>>>>> >>>>>>>>> Your code is stuck waiting on the UART. Did you get the example >>>>>>>>> code working? >>>>>>>>> >>>>>>>>> >>>>>>>>> On Tue, Dec 17, 2013 at 5:15 AM, Synn Yong Tan >>>>>>>>> <[email protected]>wrote: >>>>>>>>> >>>>>>>>>> yea. my apps actually works for the ori version of IOIO sample >>>>>>>>>> app. But after i edited the code as the code i posted above, then >>>>>>>>>> the led >>>>>>>>>> light cannot turn on. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On Tue, Dec 17, 2013 at 9:07 PM, Matanel >>>>>>>>>> <[email protected]>wrote: >>>>>>>>>> >>>>>>>>>>> Did you download 3.3v firmware of IOIOLibs?? >>>>>>>>>>> >>>>>>>>>>> בתאריך יום שני, 16 בדצמבר 2013 14:39:58 UTC+2, מאת Synn Yong Tan: >>>>>>>>>>> >>>>>>>>>>>> Hi, >>>>>>>>>>>> This is my 1st try on IOIO. I done everything according to the >>>>>>>>>>>> OIOI OTG Beginners Guide. But when i toggled the button, the led >>>>>>>>>>>> on IOIO >>>>>>>>>>>> board didn't light up. >>>>>>>>>>>> Any ideas what caused this problem ? Anyone has the solution >>>>>>>>>>>> for this ? Or how to debug it ? >>>>>>>>>>>> Secondly is the conversion to dalvik format failed with error >>>>>>>>>>>> 1. I can export the project into apk file for the 1st time. But >>>>>>>>>>>> the second >>>>>>>>>>>> time I try to export the project, this error comes out. >>>>>>>>>>>> Anyone knows what is the problem caused this error and how to >>>>>>>>>>>> solve it ? >>>>>>>>>>>> >>>>>>>>>>>> Thanks for your help. >>>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> You received this message because you are subscribed to a topic >>>>>>>>>>> in the Google Groups "ioio-users" group. >>>>>>>>>>> To unsubscribe from this topic, visit >>>>>>>>>>> https://groups.google.com/d/topic/ioio-users/wTlJJcG6LS8/unsubscribe >>>>>>>>>>> . >>>>>>>>>>> To unsubscribe from this group and all its topics, send an email >>>>>>>>>>> to [email protected]. >>>>>>>>>>> >>>>>>>>>>> To post to this group, send email to [email protected] >>>>>>>>>>> . >>>>>>>>>>> Visit this group at http://groups.google.com/group/ioio-users. >>>>>>>>>>> For more options, visit https://groups.google.com/groups/opt_out >>>>>>>>>>> . >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> You received this message because 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http://groups.google.com/group/ioio-users. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> > -- > 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 http://groups.google.com/group/ioio-users. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. 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