Indicator Circuits

Reed switch can be used to sense current. It is like a tiny magnetic switch. When current flows in a wire nearby, it creates a magnet field. This magnet field triggers the reed switch to turn on or off depending on the design. Circuit Working: Parts List: Component Type Description Quantity Resistor 470Ω 1 Semiconductors […]

This circuit is like a tiny battery level indicator, but with fancy lights. Instead of a boring bar on your phone, it uses a series of LEDs light emitting diodes to show you how much juice is left in your battery. Each LED lights up at a certain voltage level so the more LEDs that […]

This water level indicator circuit is like a team of tiny workers for your tank. It uses a special chip ULN2004 to control several parts at once. While the chip itself can handle strong electricity, in this case it is being used to manage indicator lights that show you the water level in your tank. […]

This circuit is like a super fancy dipstick for your tank! Instead of the old way of checking water levels with a stick this circuit uses sensors to measure the water. Then, it shows the water level as a number 0 to 9 on a cool digital display like a tiny calculator screen. So, you […]

Can you imagine the display on your calculator or phone that needs a tiny translator. A display driver circuit is like that translator. It gets information from a tiny computer microcontroller and changes it into a special code that the display understands. This code tells the display exactly which lights or pixels to turn on […]