Motor Speed Control with One Transistor

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Comments 3

  • LED Cube 7x7x7 about 2 months ago

    Hi, you can solve this problem with the technique of multiplexer, you can divide the image in some frames each frame is easier than the entire image and the combination of all frames create the image. In this way you can use less LEDs at the same time and the IC can provide the necessary current.

  • LED Cube 7x7x7 3 months ago

    Hi, I have made one error, I use an 74HC138 not an74LS138, but in this case TTL and CMOS' compatibility it isnt't neccessary because I use the signal of the 138 only as a clock not as a voltage level.

    No, transistors are fundamental otherwise how can you control the single layer?
    If you don't use the transistors (with my schematic) the result is 7 equal faces.

  • Internal Timers of Arduino 7 months ago

    you're right, thanks

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