I will show you how control a motor's speed with one transistor and a personal PWM signal.
Project tutorial by Marcazzan_M
A jack-o'-lantern which change color when someone passes in front of it.
How to make a 7x7x7 LED cube with Arduino.
A laser-cut robot kitten that runs and learns from you.
Project showcase by Rongzhong Li (李荣仲)
In this tutorial, I will show you how to install the dark theme for your Arduino IDE for the reason of overexposure to the screen light.
Project tutorial by the lonely programmer
How to make an easy and adaptable countdown.
Project showcase by Marcazzan_M
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.
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.
you're right, thanks
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