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wemr97dl:
Got a question about RGB STRIPs
I want to control RGB Strips with a PAC64LED, looking online I found circuits on running them with Mosfets from an Arduino, not knowing anything about them I thought that these would work
http://www.ebay.com/itm/191850144579?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
here's the data sheet
http://www.futurlec.com/Transistors/IRL540N.shtml
I put together the circuit but it doesn't turn on from the PAC64LED, using the default script, I know the brightness goes up and down so its probably not getting the full voltage
but if its not switching how will the RGB Color mixing work or fading??
Here's the circuit I was following, any help would be great
DaOld Man:
Hello wemr97dl!
Sorry for the late reply, but I havent been around here for awhile.
Im not sure what is wrong with your circuit, looks like you have it wired right according to the data sheet.
I'm not real familiar with the arduino so I probably am not qualified to help. However, the only possible problem I can see is you are powering the leds from the arduino power, could this not be hefty enough current wise?
perhaps try another 12 vdc power supply for the leds, of course you will have to connect the ground from the arduino to the extra PS ground.
wemr97dl:
Sorry I wasn't more spacific I am powering the led strips from another source, and the ground is common but I'm not using an arduino I'm using a pac64led from ultimarc i don't know if it puts out enough power to turn on the mosfets , the circuit I posted was the example I used.
DaOld Man:
I was thinking the same thing about the mosfet gate current may be too high.
You might try switching the gate with a small npn transistor. (Ex: 2n222)
Also, those mosfets are good for 26-36 amps. Do you really need something that big?
The pacled puts out 5 volts I think, maybe the voltage is too small for the mosfet gate? The smaller npn would also take care of that.
wemr97dl:
Would a transistor switch fast enough for PWM FOR THE RGB COLORs
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