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PID Thermostat Controller with bult in AC dimmerAuthor
Hercules Trapierakis
February 24, 2012

PAGE 1 of 7 - The dimmer


Here is the AC dimmer schematic:

 
 



*Actually the H11A1 optocoupler has two led antiparallel


How it works:

the Output of the H11A1 (pin 5) goes to an hardware interupt of the uC
this pin is LOW on both semi-periods of the AC sinewave
and becomes HIGH on the zero cross

like that:



Green : AC line
Blue : Zero cross output

each resistor is 20K 2W for the 230VAC

the uC resets the timer on each zero-cross detection
and fires the Triac through the MOC3021 after the "PID_out" time



Yellow : the optocoupler led drive
the minimum time ( Higher Voltage ) is 0mSec and the maximun time ( Lower Voltage ) is 10mSec




Continue reading. Click here to go to the next page >>>.
 OR click here to view the presentation.







Comments

  • At 6 March 2013, 12:39:42 user nikki81 wrote:   [reply @ nikki81]
      • Are there any PCB design files for this project ?

  • At 28 August 2012, 14:24:09 user Markus wrote:   [reply @ Markus]
      • HI hi

      I did somthing very similar, i tested it with a light bulb that dims
      Just a quick question, i would like to read this "controlled wavform" back into a plc/labview. How would you suggest this be done ?
      Thanks

  • At 16 April 2012, 23:00:27 user Giorgos Lazaridis wrote:   [reply @ Giorgos Lazaridis]
      • @Hercules Trapierakis you've turned your parrot into a carnivore!!! DAMN

  • At 16 April 2012, 22:39:50 user Hercules Trapierakis wrote:   [reply @ Hercules Trapierakis]
      • @Panagiotis Kalogeris

      This is George

      http://www.youtube.com/watch?v=O_Mg3CoALcE
      http://www.youtube.com/watch?v=U6yn3dX0beM

      there are not to many eggs

      it's not even half filled

      Not but you can use it here and on America without change the firmware

  • At 16 April 2012, 13:29:09 user Panagiotis Kalogeris wrote:   [reply @ Panagiotis Kalogeris]
      • Hello hercules nice project of yours!!!!!!!
      First of all what you intend to do so many birds?Hope to sell them because believe me i have 2 parrots and the one of it is a REAL PAIN IN THE ASS!!!!!Fantastic pcb did you develop it by yourself?Also you say that the circuit reads the ac frequency and it sets the dimmer parameters accordinally.Why is that?I mean the mains frequency isn't stable to your house?

      That's for start keep going :-) !!!!!!!!!!!!

  • At 16 April 2012, 9:04:33 user Giorgos Lazaridis wrote:   [reply @ Giorgos Lazaridis]
      • @herctrap poor bird...
      You did not have something to do with the explosion,,,, did you???

  • At 16 April 2012, 8:21:56 user herctrap wrote:   [reply @ herctrap]
      • yes i have changed the lamps from 40W to 60W

      The main power transformer near my house blown up two days before the incubation

      so the bird died from the cold

  • At 16 April 2012, 7:39:34 user Giorgos Lazaridis wrote:   [reply @ Giorgos Lazaridis]
      • Herctrap, the writeup is excellent and the PCBs are awesome! The only thing that i am afraid of is this "overkill" temperament of yours... I hope you have installed the correct heating lamps, and that the birds that will come to life will not be roasted :D You did not change the lamps that your grandfather installed, did you :D

      What happened with the single egg incubator project? Will you develop the first "chicken of the tube" or not?


     

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