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LED Chaser by IC 4017 + IC 555
I believes in that extremely amateur electronics many you, may ever build the LED flasher or light blinks or the LED Chaser prevent come to already. Today I begs for to advise the circuit LED Chaser,...
View ArticleTwo way 12 LED running lights using CD4017 and NE555
This Two way LED running lights to use for beautiful, this circuit uses 12 LED lamps, arranged in 2 rows, each row of 6 leds. A green one and a red one, alternatively. use a different color for this....
View ArticleSimple sound effect generator circuit using IC-555 and IC-4017
If we want to be a producer,This circuit would be a good starting point to composed music for 1000 tracks. As Figure 1 is a common circuit. Which will see them always when use LED running. We will use...
View ArticleModify a LED chaser circuit into the easy timer
The a LED chaser is popular, so we will modify it into the easy and cheap timer. First,a appliance will works, while respective LEDs will flash, and until all LEDs go out. Then the appliance stop. How...
View ArticleIdea to build simple frequency meter from old calculator
This circuit use a simple ideal is the calculator count a frequency within range 1 second. This time base is generated by IC-555,on astable multivibrator form. How it works The number on the...
View ArticleSimple 12 LED running using CD4017 and NE555
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...
View Article555 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...
View ArticleSimple 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...
View ArticlePower 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...
View ArticleDonkey 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...
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