topic lamp dimmer system advice in ColdFire/68K Microcontrollers and Processors https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/lamp-dimmer-system-advice/m-p/132299#M1080 <HTML><HEAD></HEAD><BODY><SPAN>Hi, I am working on my design project to graduate college, and am making a lamp dimmer controller. I was wondering the best way to use a 5213 to accomplish this. I am thinking of hooking a zero detector circuit to an interrupt pin, which in turn will reset the PWM timers. The lamp dimmer drivers (opto-isolated triac drivers) will be hooked (indirectly) to the PWM output pins. I would like to be able to control about 8 loads, and am just wondering if there is a better way then to just use the PWM's. Also, can anybody point me in the direction of a zero crossing detector for 120Vac? Any help appreciated!</SPAN></BODY></HTML> Thu, 13 Apr 2006 04:18:52 GMT airswit 2006-04-13T04:18:52Z lamp dimmer system advice https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/lamp-dimmer-system-advice/m-p/132299#M1080 <HTML><HEAD></HEAD><BODY><SPAN>Hi, I am working on my design project to graduate college, and am making a lamp dimmer controller. I was wondering the best way to use a 5213 to accomplish this. I am thinking of hooking a zero detector circuit to an interrupt pin, which in turn will reset the PWM timers. The lamp dimmer drivers (opto-isolated triac drivers) will be hooked (indirectly) to the PWM output pins. I would like to be able to control about 8 loads, and am just wondering if there is a better way then to just use the PWM's. Also, can anybody point me in the direction of a zero crossing detector for 120Vac? Any help appreciated!</SPAN></BODY></HTML> Thu, 13 Apr 2006 04:18:52 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/lamp-dimmer-system-advice/m-p/132299#M1080 airswit 2006-04-13T04:18:52Z Re: lamp dimmer system advice https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/lamp-dimmer-system-advice/m-p/132300#M1081 <HTML><HEAD></HEAD><BODY><DIV>The Zero Crossing Detector depends on the power supply (transformer mb?)&nbsp;you are to use.</DIV><DIV>&nbsp;</DIV><DIV>Anyway, assuming you are only programming the dimmer, Isn't a Coldfire device huge for the application?. MB a 8/16 Bit Microcontroller would be a better choice.</DIV><DIV>&nbsp;</DIV><DIV>Cheers<IMG alt=":smileyhappy:" class="emoticon emoticon-smileyhappy" id="smileyhappy" src="http://freescale.i.lithium.com/i/smilies/16x16_smiley-happy.gif" title="Smiley Happy" /></DIV></BODY></HTML> Fri, 14 Apr 2006 21:46:27 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/lamp-dimmer-system-advice/m-p/132300#M1081 tequila 2006-04-14T21:46:27Z