I am sorry but this is nonsense. 2015-01-01 21:12 GMT+01:00 William Pretty Security <[email protected] >:
> Why don’t you just use a 3 volt relay ? > > > > I have several on order from Digikey. > > I am basically doing what you are attempting. > > I am driving a 3 volt relay from an I/O port. The trick is to use the > Digikey Search feature to look for a 3 volt relay and NOT a 3.3 version. > > If you use a 3 volt relay then the Vce voltage drop of the transistor will > not affect the relay. (turn on is usually ~2.5v) They also come with built > in diodes J > > > > Bill > > *From:* [email protected] [mailto:[email protected]] > *On Behalf Of *Carlos Cesario > *Sent:* Thursday, January 01, 2015 3:03 PM > *To:* [email protected] > *Subject:* Re: [beagleboard] Re: Gpio Relay > > > > Hello Tux Leonard, thank you by your answer. > > > > Using +5v I had success too, but I would like to usage only +3v and > convert it to +5v like this circuit > > > > > http://electronics.stackexchange.com/questions/56093/how-to-use-a-3v-output-to-control-a-5v-relay > > > > But I 'm having difficult understand this and simulate with BBB or RPi > > > > If possibe, could you help me pls? > > > > Thank you o much and happy new year for everyone!!!! > > > > Carlos > > > Em quinta-feira, 1 de janeiro de 2015 17h00min02s UTC-2, Tux Leonard > escreveu: > > Perhaps you can google for "MOSFET as Switch" > > > > I attached my solution. The relay should be connected to the end of the > blue line and +5V. > > To protect your circuit you could add a diode in parallel to the relay. > > > > > > 2015-01-01 17:32 GMT+01:00 Carlos Cesario <[email protected]>: > > Hello guys! > > > > It is wrong!!! Does nos working as expected. :( > > > > Does someone could instruct me how todo this ? 3v to 5 using 2n7000 .. > > > > Thank you! > > > > Carlos > > Em quarta-feira, 24 de dezembro de 2014 22h13min50s UTC-2, Carlos Cesario > escreveu: > > Hello guys, > > > > Someone please could help/explain me how isthe best and security way to > connect 5v relays on BBB ? > > > > I 'm planning usage this relay > http://www.dx.com/en/p/arduino-5v-relay-module-blue-black-121354 or this > relay board > http://www.dx.com/en/p/8-channel-5v-relay-module-board-for-arduino-red-156424 > > > > Thank you > > > > Best regards, > > > > Carlos > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > > > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > ------------------------------ > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2015.0.5577 / Virus Database: 4257/8807 - Release Date: 12/25/14 > Internal Virus Database is out of date. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
