If I manage to desolve one of those components, is the IOIO board still functional, when powered (5V) using 5V pin ? For me, powering the IOIO and servos has been the biggest problem. The main requirements are: - IOIO could be powered using the standard 12V power adapter for "fixed" projects - in "mobile" projects, using either Lipo (7.4V) or LifePo(6.6V) battery - it should be possible to SAFELY connect 3-4 servos to 5V connector in IOIO and run these servos concurrently. May be a place for an appropriate fuse should be added to limit the current and not damage the IOIO - another nice to have feature (even the physical size of IOIO board must be increased): in P-pins where PWM is possible, there could be ground and 5V pins, so that I can solve 3-pin male connector and connect the standard servo 3-pin female connector. This would make it easier to connect servos.
When will the new hardware revision available ? Can you consider these modifications, Ytai ? perjantai 13. marraskuuta 2015 22.36.54 UTC+2 Ytai kirjoitti: > > The switcher is the small square IC next to the power connector, which has > no legs. The inductor is the large-ish cylindrical component next to it. > A new hardware revision of the IOIO will roll out very soon, which > addresses this issue. Until then, the advice is to not power the IOIO with > more than 10V. > > On Fri, Nov 13, 2015 at 9:25 AM, <[email protected] <javascript:>> > wrote: > >> I have exactly the same problem in 2 of my IOIO boards. If it is powered >> using VIN->not working. If 5-5.5v supply is connected to 5v pin. The power >> led will be on, but not working, and the processor gets hot. The resistance >> between GND and 5V is nearly 0 (compared to functioning board 1-2 MOhm). >> So what is the switcher to be eliminated to rescue the board ? The micro >> switch near USB connector ? >> >> perjantai 13. marraskuuta 2015 9.28.17 UTC+2 Ytai kirjoitti: >>> >>> It does sound like a fried switcher, causing a low impedance path >>> between 5V and ground. This is likely causing your 5V rail to sag, so it >>> might explain why your Android won't connect. One way to hack around this >>> problem is to desolder the switcher or the inductor. I would first verify >>> this guess by measuring resistance between 5V and GND when not powered, and >>> expect that you'll see a low value in the few ohm or less range. >>> >>> On Thu, Nov 12, 2015 at 2:57 PM, Zvonimir Udovičić <[email protected]> >>> wrote: >>> >>>> >>>> >>>> Dana četvrtak, 12. studenoga 2015. u 17:50:08 UTC+1, korisnik Tyler >>>> napisao je: >>>>> >>>>> Okay, can you give us more detail? When you power the IOIO, are any of >>>>> the lights coming on? How are you powering the IOIO, specifically, where >>>>> are you applying the 5v? Finally, does any part of the IOIO board feel >>>>> very >>>>> hot? >>>>> >>>>> >>>>> power lamp lights normally, i am powering ioio with 5V adapter on 5V >>>> pin, ioio board feels hot and vin pin is not working >>>> >>>> -- >>>> 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/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 http://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 http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
