A very simple circuit using IC LM3915 to measure the moisture level in soil. (Just for…
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hobby electronic circuits
LED as a Light detector circuit
We use different light sensor elements to detect the Light beam, for a change we can…
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Door Open Alarm Circuit using Reed switch
If you want to Protect some door from unwanted access then you can use this simple…
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Automatic street light circuit
Construction and Working Simple and easy to construct automatic street light circuit is given here, this…
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Simple continuity tester circuit diagram
This simple continuity tester circuit constructed with single npn switching transistor SL100, this circuit will give…
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USB desktop lamp circuit
This simple desktop lamp circuit gives enough light during night time work without disturbing others. Here…
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Configurable alarm with Multitone
This configurable alarm produces different types of tones. It can be selected by switches, this circuit…
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Variable LED flasher
This is single IC LM3909 variable LED flasher circuit, and it needs only 1.5 volts for operation,…
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Simple PIR sensor circuit
To detect movement or motion of person the simple PIR (Passive InfraRed) circuit can be used,…
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