Hi ! I think I have the same problem, the voltage regulator in my IOIO board is damaged. You can probably power the board supplying 5V directly to GND and 5V pins, this way I got my IOIO powered and connected. The drawback is that if I try to connect servo power to IOIO pins, the board immediately disconnects ! So I think 5V is not enough for IOIO and the servo, and I can't supply more than 5V to these pins ? Servos must be powered externally and take the control pulse only from IOIO.
keskiviikko, 8. lokakuuta 2014 3.44.39 UTC+3 [email protected] kirjoitti: > > All, > Ytai responded in a pvt message that some other people have reported this > too. His response is -- " It seems like the sudden outgoing current pulse > on VBUS can sometimes damage the switcher". Apparently folks from > SeeedStudio are looking at it too. > > Will keep you updated, if I hear anything more. For now I am hoping that > creating a separate circuit to get the android device separate power > (directly from input power, which in my case is going to be 5v) is going to > solve this rare problem. > > Request for Ytai. You had indicated that we have the spots to get D+ and > D- which we can get into another board using pogosticks. Will it be > possible to get them in one of the Pins? That way we could simple take > those (D+ and D-), the voltage and gnd to our own USB female slot in an > external board? Being new I am not sure how difficult and rugged a pogo > stick with be... especially when used in a automotive application. This > also (IMO) will isolate the power circuit and MAY not cause the above > problem. > > > Best regards > RK > > > > On Monday, October 6, 2014 6:41:35 PM UTC-4, [email protected] wrote: >> >> Team >> I think I just 'fried' three ioio boards in one evening. I have been >> working with these for over 6 months and never had a problem. But i was >> working on "lab settings" and and we were testing our programs >> >> Today I tried to connect and disconnect multiple times to make sure my >> program was working and RIGHT as i was connecting or disconnecting the >> tablet the devices powered OFF and I have not been able to power them on. >> Also while connecting and disconnecting it was fine the few times but then >> power off. Few more info >> 1) I was originally connecting wires to VIn and GND and connecting it to >> a 5v wall charger (or to a laptop 5v). I blew two of them on this setup. I >> thought the wires shorted >> 2) Next I used the JST connector and gave it 12 v (again from wall >> charger) and didnt use any "naked" wires. After connecting and >> disconnecting a tablet a few time this blew up too. >> 3) Board is connected to tablet using the Red USB wire from sparkfun >> >> Best Regards >> RK >> >> >> >> >> -- 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.
