To make things even more even there’s a slew of constant current LED driver chips out there that can be had for a song. But do you have any idea how those constant current circuits work?

You can learn more about these less-known features by referring related articles/ tutorials/datasheets published elsewhere in this website/internet. As a bonus, you can build your own LED display ...

[Kenneth] put up a great tutorial on Numitron tubes ... perfect for the constant current LED drivers [Kenneth] picked up The test circuit consisted of an ATtiny2313 and an A6278 LED driver.

This is a simple 0 to 9 counter circuit constructed using Arduino! Here, a common cathode 7-segment LED display is connected to Arduino for displaying the digits. The code (Arduino sketch) allows push ...

Kids love building electric circuits, but connecting light bulbs to batteries with fiddly wires is tricky for young hands. Play dough and light-emitting diodes (LEDs) solve the problem beautifully.

However Frank felt there might be cases where the brightness was too much for the work at hand, so he decided to build a dimmer circuit. In selecting a method of dimming the LED fixtures, Frank first ...