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226  General Category / General Discussion / Re: embed youtube on: November 13, 2012, 02:15:33 pm
Let's see Arduino out of a tin can
227  Using Arduino / General Electronics / Re: 8bit shift register 74HC595 - Power up 16 leds ! on: November 13, 2012, 11:50:36 am
Like what's been said the 74hc595 is really not made for leds that will be on all 8 at a time and 16
on one chip not a good Idea.
The TPIC6B595 as pointed out is made to drive leds can use the same code for a 74hc595 but can handle up to 850mA a chip or 120mA a pin not to go over the total 850.

But you could use two driver chips and two more pins on the arduino and 74hc595 and light 16 leds at 20mA safely
228  General Category / General Discussion / embed youtube on: November 13, 2012, 10:40:30 am
How you embed youtube video on the forum thanks

Burt
229  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 13, 2012, 10:03:28 am
You could use The PWM but it doesn't work well at all.
It's like this I tried this years ago what happens is some times you'll get a 1/2 off light next time its 3/4  then the next it jumps to off and you can see it like flickering.

Now with zero crossing you can make it soft and slow change without flickering.
230  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 08:40:47 pm
If the op want's to make one of the dimer's i post here the link to the SCH
http://www.inmojo.com/files/AMIfv956v0gqGQq4kfwh2528TEfTGlskTwl_yXylLv3GSysROxYTsc7JphvdWQo7AnoNdEK3CcHlJcEZN2PMXYG9H4LpjIw_VEETiTOi8xxiNqs-ekluFawYqmqV08UT6R9v7aZ5e9qHn69hOxmTlUpU84b1PBOGPA/ac_dimmer_schematic.pdf

And if you go down to the bottom of the page there the arduino code to run it.
 http://www.inmojo.com/store/inmojo-market/item/digital-ac-dimmer-module/
231  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 07:33:17 pm
I don't no how to embed Youtube here but this shows a AC dimer I did using the pwm idea it didn't
work well
http://www.youtube.com/embed/NXdhNwEueVE?list=UUPmheWolpf9TGX-D7ch_FTw&hl=en_US

If the OP ask I'll post how to wire one up using zero crossing which worked really nice.
232  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 07:12:10 pm
dhenry we are not in the same boat here your talking about something beside a solid state relay
used here it's turned on with 5 volts and has zero crossing detector built in that let you turn on the relay at the cross and stop it at the cross you don't use PWM on the the firing side of the relay.
it not made for that.
233  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 06:52:40 pm
Quote
the relay will not turn on till the AC line is low

Why is that the case?


It's made that way if your sitting in chair and hitting a switch and the relay is waiting to power up based on when the line becomes flat to keep a big inrush of power you could prolong the off time

Like starting a race saying go the saying stop

 
234  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 06:45:31 pm
http://www.atmel.com/Images/doc2508.pdf There a link to read to get you up to speed on zero crossing

And some more http://myelectronichome.altervista.org/index.php?link=eng-il_circuito_zero_cross_detection.htm

And you may want one of these I would make my own
http://www.inmojo.com/store/inmojo-market/item/digital-ac-dimmer-module/
235  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 06:29:09 pm
No not in this case the relay will not turn on till the AC line is low but your playing with the power and could like prolong the the time delay.

Where as on one made for phase control you fire it on using software to catch the zero cross and phase shift the power line.

With PWM you have know idea when the crossing happens.  
236  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 06:16:26 pm
retrolefty  your right the relay he said he has does have resistor built in so one is not needed
so here a update  

But it would still work I'm 1mA above the Min. Just to be safe if he didn't have a built in resistor
237  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 05:53:38 pm
Here you go have fun and always keep one hand in your pocket when using line voltage.

Oh and one more thing don't use pwm just set pin2 high to turn on and low to turn off



 
238  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 04:58:35 pm
For starters you don't need and transistor to make this work the max input is 20mA
which is easily handled by the Arduino digital pin to the relay you have has zero crossing built in
and is not made to do phase shifting. It's meant to be used as a switch.

If you want to try this with a bulb you'll need to make a PCB to hold the relay and some kind of case
to keep it in with the I/O line on one side and a plug on the opposite side    

If you want I'll draw you something up.
 smiley-grin smiley-grin
239  Using Arduino / General Electronics / Re: Using Solid State Relays with PWM on an Incandescent Bulb - Wiring Help Needed on: November 12, 2012, 04:20:43 pm
Are you trying to dim a light bulb with a relay, If so that's a bad idea you burn the bulb out it no time.
Now if you just want to switch it on then it's ok to use as switch.

But you said pwm so I'm thinking dimer.

240  Using Arduino / General Electronics / Re: Problem with MSGEQ7 and Arduino on: November 12, 2012, 01:49:20 pm
What's the sound your sampling fixed tone or a song
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