A heart-shaped water lamp made of transistors, resistors and capacitors

flyriz

A heart-shaped water lamp made of transistors, resistors and capacitors [Copy link]

I made a little gadget for my girlfriend on Chinese Valentine's Day. It is a water-flowing lamp with 60 LED lights. After power on, the red, green and blue patterns will flash alternately. See the following figure for the circuit principle and effect pictures:

maychang

Very simple. Not bad.

qwqwqw2088

You can play with the microcontroller to control the LED dot matrix, and displaying Chinese characters is more interesting

okhxyyo

The OP is thoughtful!

maychang

If controlled by a single-chip microcomputer, the pattern can be much more complicated. The LEDs can light up in sequence, and the "arrow piercing the heart" arrow can move one LED at a time in sequence, giving it a dynamic feel.

flyriz

maychang posted on 2018-9-11 09:08 If controlled by a single-chip microcomputer, the pattern can be much more complicated. Each LED can be lit up in sequence, and the "arrow piercing the heart" arrow can move one LED at a time, with animation...

At that time, I just wanted to keep it simple

maychang

flyriz posted on 2018-9-11 10:23 At that time, I just wanted to keep it simple.

Phase-shift oscillators are, of course, very simple. However, it is impossible to make very complex patterns with a phase-shift oscillator, and it cannot be controlled at will. Using a single-chip microcomputer can make very complex patterns, which is the strength of a single-chip microcomputer.

AOE-hill

Arrow