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555 Related Resources


555 Fully Automatic Emergency Light

April 06, 2013 By: admin Category: Control, Miscellaneous No Comments →

Automatic Emergency Light Schematic

This circuit shows you how to build simple Automatic Emergency Light using IC 555. This emergency light automatically turns on when mains fails and turn off when mains power is available. Its charging circuit stops automatically when the battery is fully charged. So you can leave the emergency light connected to AC mains overnight without […]

555 TV Remote Control Jammer

October 04, 2012 By: admin Category: Analog, Miscellaneous No Comments →

remote jammer

If you want to watch your own TV program and don’t want anyone disturb your watching time by changing the channel via remote control, try build this simple circuit TV remote control jammer. The circuit uses 555 IC timer to generate 38 kHz signal and IR transmitting Diode (IR emitter) to transmit the signal. When […]


Gas Leakage Alarm

October 15, 2011 By: admin Category: Alarm, Detector, Sensor No Comments →

Gas Leakage Alarm Schematic

Here is a circuit that can be used to detects the leakage of LPG gas and alerts the user through audio-visual indications. The circuit uses SEN-1327 gas sensor module from RhydoLABZ. Its output goes high when the gas level reaches or exceeds certain point. A preset in the module is used to set the threshold. […]

Inductivity Meter Using IC 555

July 02, 2011 By: admin Category: Analog, Measurement, Project No Comments →

inductor meter using IC 555 project

The projects shows you how to build simple low cost Inductance Meter based on popular IC 555. The 555 works in its most simple rectangle oscillation configuration. In this mode, the duty-cycle should be around 50%, but this depends on the load on pin 3. Over the amplifying transistor Q1 the AC is given on […]