Here is a simple 12 LED running circuit that use CD4017 and NE555 as based of circuit. It like the two way 12 LED running lights using CD4017 and NE555. Which it use 12 LEDs only. There are a interated running form. To begin with LED flash from the center to the edge on both […]
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Simple 12 LED running using CD4017 and NE555
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Automatic water tank using pump controller by 2SD882
The automatic water tank by pump controller allows for a convenient and cost effective. In the countryside, Water is very important. The most to use the groundwater to dig as pond, and for the convenience, They often use the pump automatically, But waste a lot of electricity. Some homes have a large water tank on […]
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555 audio ohmmeter circuit
555 audio ohmmeter circuit This is a 555 audio ohmmeter circuit. Some times, we need to measure roughly the resistances only. In this we can know the resistances by the audio so also fast check. This circuit will use the resistors that unknown value to compare with many the reference resistors. In Figure 1 is […]
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Simple 555 ICs tester circuit
Most IC-555 is used to generate frequency, and sometimes we need to know. Is it good or bad? But normal multimeter cannot check it. Thus, I make a simple 555 ICs tester circuit. Which is tested correctly and faster. How it works Resistors R1-R3 acts as limit current and reduce voltage to LED1-LED3. Which is […]
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Power Battery Saver Circuit
The power battery saver circuit when use normal lamp. In some times a lamp that is used have too bright. To adjust the brightness with the variable resistor, it would not be appropriate. because power loss too much. For this circuit can save the power of battery. The brightness of the bulb is equal to […]
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Donkey Sound Generator Circuit
This is a Donkey sound generator project that easy to builds because use simple components include three IC-555 and LM386 and more little parts. Although at present we use Micro controller IC because small. But some times it is hard to find, so this circuit is suitable for everyone. How it works In Figure 1 […]
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