Simple Door Knob Touch Alarm Circuit is constructed by using timer IC 555 and few easily available…
Continue ReadingCategory: Hobby Circuits
hobby electronic circuits
Fire Alarm Circuit
Simple Fire Alarm Circuit designed by using 10K NTC (Negative Temperature Coefficient) Thermistor and timer IC…
Continue ReadingWater Level Indicator Alarm
Water is very precious thing and we need to conserve adequately and should ensure proper water…
Continue ReadingNon Contact AC Voltage Detector Circuit
By using this simple Non Contact AC Voltage Detector Circuit we can identify the presence of AC…
Continue ReadingBroken Wire Detector Circuit using CD4069
Identifying & Locating the broken wire Inside wall or inside plastic insulation is very difficult, Here…
Continue ReadingSimple LED Flasher Circuit
Simple LED flasher circuit can be designed by using timer IC 555, as we know the…
Continue ReadingLie Detector Circuit
Simple two transistor based lie detector circuit is just a fun electronic circuit, some times works…
Continue ReadingSoil Moisture Sensing Circuit
A very simple circuit using IC LM3915 to measure the moisture level in soil. (Just for…
Continue ReadingLED as a Light detector circuit
We use different light sensor elements to detect the Light beam, for a change we can…
Continue Reading