I’ve sent out the PCB order for my RGB stick!
I’ve put up a page on the right-hand side with detailed information and pricing for them. They’ll be available in approximately two to three weeks. Initially I only have a limited supply of parts for them, so please comment on the RGB stick page saying if you’re interested in them. This will help me decide how many LED’s to buy.
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very neat product, I just got done with one of those hypnocube kits so I’m good for now on pretty flashy things;
A couple of thoughts I had on your fanblade project, there are a number of POV videos on you tube, but what really comes to mind is a sphere project where they used a curved semicircle of masonite with the LED’s drilled through and glued in the entire length, they then had a battery pack to power the LED array. this arc and the battery pack were mounter on an axis which was driven by a motor. the arc had a reed switch to sync up the program so it would appear to stand still. the motor was completely powered separately so it didn’t have any wires trying to spin with the sphere. there was a magnet on the base to trip the reed switch and through some fancy coding it would read the frequency of the rpm and then divide the time it took for one revolution by the number of steps in the light sequence, that way it would go through the full pattern per revolution if you wanted the pattern to appear to spin, you could increase or decrease the pulse frequency accordingly ie if you increased the pulse frequency by 10 percent it would appear to rotate same direction as the fan were turning and in ten revolutions the pattern will have fully rotated ont the other had if you decreased it 10 percent it would appear to roatate counter clockwise completely in ten revolutions. Being that it rotes at such a fast speed balancing is critical so the batterypack and circuit board would need to be away from the axis different distances so the it needs to balance, just like balancing tires, this may be alittle harder with something like a ceiling fan, but the easiest way is to balance it as best you can guessing, then turn on the fan and feel how much it vibrates. turn off the fan while still feeling the vibration, as it slows, you should be able to feel which direction it wants to move, then either move the heavy part (the battery pack) either in or out accordingly until it theres no longer any shimmy. this is a common task when you have a wobbly fan people tape pennies to fan blades to correct this problem when there isn’t added weigh like this. you may want to research what is the lightest rechargeable battery that can handle the current you need for the longest time. I’m curious if you thought about heat sink on the chips that get too hot. Another question is what are you using to drive the chips, Allegro makes a constant current LED driver. pretty much a shift register with current control. I think you’d need one for each color of the LED as they use different level of current. you set the current level on each one as you would a single LED, but only need one resistor for all the 16 bits it shoots out. this too could be daisy chained as you do with your current LED sticks. very cool, I’ll likely buy one in the future when I don’t have as many projects on my plate.