WooferHound
Well-Known Member
I am about halfway finished with an Art project which will project 120 Fast Color Changing RGB LEDs onto the wall or Christmas tree or anything else.
There is a 12 x 11 grid of LEDs, minus 3 from each corner so the image will have some roundness.
Color Changing LEDs are dependant on a certain Voltage on the input and the current limiting is done by the microcontroller onboard each RGB LED. These LEDs are rated 3.0-3.4 volts and I'm giving them the full 3.4 volts to insure best brightness. All 120 LEDs are wired in Parallel. It took over 2 hours to get the PC board made.
These LEDs Flash 2 to 5 times a second and do fast color fades too. I took some pictures but since the LEDs are flashing, about a third of them will be off at any instant. This ends up being a very Busy and Exciting display that can't be captured in a photograph.
This is being powered from my 12v solar power right now, but I will be using a 120vac powering a 6vac transformer to make an 8.5vdc power supply feeding a Buck converter to get the needed 3.4v to feed the panal. Measured the Current draw from the buck converter to the panel and it averaged about .9 amp at the 3.4 volts, so it's a little more than 3 watts to the LEDs.
It works really good and is really bright, showing up real good in bright light. Unbeleavably busy Dancing Patterns. Changing the Focus makes some great effects and it will be built to make the focus easy to adjust. I've gutted an old Meteor Liteflower disco light and will be placing everything inside of that.
There is a 12 x 11 grid of LEDs, minus 3 from each corner so the image will have some roundness.
Color Changing LEDs are dependant on a certain Voltage on the input and the current limiting is done by the microcontroller onboard each RGB LED. These LEDs are rated 3.0-3.4 volts and I'm giving them the full 3.4 volts to insure best brightness. All 120 LEDs are wired in Parallel. It took over 2 hours to get the PC board made.
These LEDs Flash 2 to 5 times a second and do fast color fades too. I took some pictures but since the LEDs are flashing, about a third of them will be off at any instant. This ends up being a very Busy and Exciting display that can't be captured in a photograph.
This is being powered from my 12v solar power right now, but I will be using a 120vac powering a 6vac transformer to make an 8.5vdc power supply feeding a Buck converter to get the needed 3.4v to feed the panal. Measured the Current draw from the buck converter to the panel and it averaged about .9 amp at the 3.4 volts, so it's a little more than 3 watts to the LEDs.
It works really good and is really bright, showing up real good in bright light. Unbeleavably busy Dancing Patterns. Changing the Focus makes some great effects and it will be built to make the focus easy to adjust. I've gutted an old Meteor Liteflower disco light and will be placing everything inside of that.
