The post explains a simple sound to flashing lamp circuit which can be used for facilitating people with hearing loss, so that they are able to visualize a distant cell […]
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Patient Drip Empty Warning Indicator Circuit
In this post we will learn about a simple mechanism, and a circuit which will enable a patient’s IV drip bottle system to sound an alarm whenever it gets almost […]
Intruder Position Indicator Security Circuit
The post explains an LED based intruder position indicator circuit which will indicate the position of the burglar throughout the secured corridor as the person tries to sneak past the […]
Arduino Battery Level Indicator Circuit
In this post, we are going to construct an Arduino based battery level indicator, where a series of 6 LEDs show the level of the battery. If you are interested […]
Beacon Level Indicator Circuit for Combine Harvester Grain Tanks
The post explains a beacon indicator circuit for combine harvester grain tanks. The idea was requested by Mr. John Bosch. Circuit Objectives and Requirements I would like to retrofit the […]
Battery Full Charge Indicator Circuit using Two Transistors
This little circuit will alert the user regarding a battery reaching its full-charge level (over charge) while it’s being charged, by illuminating an LED. The circuit uses just a couple […]