@Ytai Thanks for your precious time! Yes, you are right, doing this in Java is unfeasible (that's not my intention). But maybe my use-case is common enough to integrate the PFC functionality into the official IOIO firmware? One input pin will be used for zero crossing detection and some other output pins are used to trigger the triacs (multiple output channels).
2014/1/9 Ytai Ben-Tsvi <[email protected]> > Driving the triac in sync with the AC signal in Java is going to be > unfeasible because of latency and jitter constraints. You have the option > of either using custom electronics (discrete or a separate microcontroller) > to drive it, controlled by the IOIO via a PWM pin or something OR write > custom firmware for the IOIO that does dimming. > Otherwise, there might already be a module that does that - your use-case > sounds common enough. > > > On Wed, Jan 8, 2014 at 9:35 PM, n <[email protected]> wrote: > >> Arthur, >> >> For dimming ac you need to cut the phase at zero crossing For that you >> need to use a opto driver like the 4n35 to ascertain the ac voltage wave >> and then drive the triacs through opto triac drivers. >> The coding is very easy if one understands the concept basics. >> >> For dimming 1000watts it would be a whole lot of amperage 1000/230vac >> gives you A bit less than 4 amps >> >> -- >> 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 a topic in the > Google Groups "ioio-users" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/ioio-users/s_NY9im_SVY/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. > -- *Arthur Marxer* Dipl. Informatik Ing. ETH *NetCat AG* Hub 26 9492 Eschen Liechtenstein Mobile: +41 78 803 68 87 Business: +423 232 73 37 [email protected] www.netcat.li -- 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.
