I’m in the process of having my conservatory rebuilt and I’m installing some lighting trough to uplight the frame. I would like to put RGB LED strip in to the trough.
I’ve been in touch with my contact at Megaman and am told that they have a stock of LWRF RGB controllers, but they require common anode strip. Does anyone know of a supplier who specifically supplies common anode RGB strips? I need about 5m of it.
The alternative is for me to buy one of the cheap chinese RGB controller solutions out there. If these hold their colour/function between power cycles then I guess I could just put in an inline relay for LWRF control, but it would be nice if I could get proper mood control involving different colours.
Turns out the controllers need common cathode not common anode and this is like rocking horse 5h1t in the UK! I have found a circuit diagram here: http://www.instructables.com/id/Connect-Common-Anode-RGB-LEDs-to-Common-Ground-RG/ which seems like it will convert common cathode to common anode through the addition of a separate power supply (or a separate connection of the original one I assume). The problem I have is that I have no experience of electronic circuit design so have no idea how to size/rate the components I will need.
I have purchased 5M of common anode RGB strip (c/w controller and PSU) for the ludicrous sum of just £13.49 from here: http://www.ebay.co.uk/itm/251637521877 and am awaiting delivery. The strip appears to be 60 LED per meter and states that it requires 2A per colour. Watts = Volts x Amps so that’s 24 watts per colour or 72 watts total for 5M when on full white.
I know the LightwaveRF RGB controller (the one sans 1M supplied strip) can handle a max 54 watts so wouldn’t be enough for 5M of this strip anyway but since this will only need to power the three transistors, I am hoping this will be plenty.
Can anyone with electronics experience help me spec the components I will need to drive this strip? I am thinking 3x tip3055 transistors, is this a good start?
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