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24v COB rgb 840 strip controled by Raspberry Pi

fskrzycki

I am having a hard time figuring out the solution to controlling my 24v strip with my Pi 4. I have a 4 pin strip with R. B. G. Bk wires.  I think a N-channel MOSFETs transistor will fix the communication issue and allow control of the colors. most Ara fruit software I have seen is for addressable Leds with only 3 leads. R. Bk. and Green.  Am I on the right track with using the transistors. If so Why? is there an easier way? I am making a bay blade stadium for my son and want to incorporate buttons with lights and sound.. 

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  • looking at your low points total  you are new to the E14 community. Welcome.

    There are a few details that need clarification in order to drill down to a possible solution. I'm not sure of your experience level so forgive me if my explanation is to simplistic. The Pi's GPIO  output is 3.3 volts. Unless your output device is designed for this logic level you will need to level shift to another voltage.

    A properly designed transistor solution might work but you need to be careful of voltages applied to GPIO pins. You can cause them to not work, depending on your configuration.

    LED strips come in a number of flavours. Some are addressable and others are just standard LED. Some LED might require limiting resistors to prevent them from burning out. The addressable LED strips typically require some protocol to talk to them. 

    Can you provide the details on the LED strip. Do you have a model number, specification sheet or just the link you used to purchase them. This community has a wealth of experience. Given the appropriate details the help you seek is still possible. Sharing what you are trying to accomplish might get you a solution you never thought of. I suspect many here have played with LED strips.

  • in reply to colporteur

    BTF-LIGHTING FCOB COB RGB Flexible High Density Uniform Light LED Strip 840LEDs/m 16.4FT DC24V 10mm Width Color Changing LED Ribbon

    4 pins, black wire carries the voltage, Red, Green, Blue are ground. I have the power running through a breadboard now and can control each set of LEDs independently by removing the ground, (RGB).  I think these instructions will work, raspberrypi-ledstrip  My thought is the Python script will need to include instructions for each set of LEDS. pixels1, pixels2... 3.  I think each data wire will need a seprate ground pin on the GPIO. I plan on using 18, 12, & 10. 

  • in reply to fskrzycki

    Oh, how come now you're fine supplying information, but previously you rudely refused?

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