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| Question about hijacking other devices gate transistors. |
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| Zero999:
--- Quote from: msuffidy on December 17, 2021, 01:16:07 am ---I want to scale up basically what is going on in this video. If it works as I expect I can get basically whatever RGB values to a large sets of LEDS as I want as controlled by whatever effects I want to. I am thinking of making something like a cylinder post with the strip to wrap around it so it is a stand up light. --- End quote --- I don't have time to watch a 10 minute video and doubt many others do. Briefly explain what you're trying to do. If you need to control a large number of LEDs, then addressable LEDs, such as NeoPixel. https://learn.adafruit.com/adafruit-neopixel-uberguide If you just want to control one or two RGB LED strips, use the simple circuit I posted above. I could build it much more quickly and easily than I could hack a pre-built board. |
| msuffidy:
I think it is pretty much answered, but what I was doing was merely controlling a RGB led strip from my computer using PWM dimming, as to get a certain RGB approximation. I was not building a multi LED cube display. I was mentioning a cube because I was describing color morphing but they were going to be all the same. The scheme uses the arduino as a pwm signal generator. |
| msuffidy:
I got a new idea about some stuff I have around here. Another solution was to take over this $4 light puck I got from the dollar store. I have edited this post to reflect some things I have learned since writing it originally: I was thinking I would power if from a separate usb line to a usb hub tied to where the battery used to go. (yes but the usb is 5v and the batteries are 1.2 x 3 = 3.6V, so I would ideally have to convert them. ) Also the arduino I think should connect to the points I have drawn on here. I think maybe I could even use the existing resistor, so I just have to connect a few things to the arduino carefully. (yes but the control signal was 3.6 previously and would be 5v so I am not sure I can directly do that ) |
| msuffidy:
Hey I did it and it seems to pretty much do what I wanted it to do. I left it running on batteries instead of making a wire jungle. Bad news is I hit 2 of the smd rgb leds with the soldering iron sort of messing up the packages. Good news is it seems to still work anyway. Well anyway proof on concept. I will be putting up a youtube video soon demonstrating it. This is the setup though. Oh, BTW I broke off those 3 gpios from the micro. Only real problem is pwm setting 1 of 1000 is still pretty bright, I mean it is darker, but it should be totally off. So there is a low end gamut problem. I don't know if it is like switching time issue or something maybe on their transistor. I put in the gamma formula at gamma 2.5 and it works a lot better than in the video below. |
| msuffidy:
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