The principle of simple advertising lamp circuit is to display information by circulating all light-emitting diodes and controlling their switch states in turn. This method needs a cycle counter to control the traversal order of LED, and a timer to control the switching time of LED.
In order to control the switch state of LED, it is necessary to use programmable circuit elements, such as programmable software reconfigurable device (FPGA) or microcontroller (MCU). These components can control the switch state of LED through programming and transmit information to LED through serial or parallel bus.
In addition to controlling the on-off state of LED, the advertising lantern circuit can also use the gradient or flashing effect to enhance the attraction of information. This can be achieved by adjusting the brightness of LEDs or using LEDs with multiple colors.
Generally speaking, the principle of simple advertising lamp circuit is to display information by controlling the on-off state of LED and using programmable relay. Simple advertising lamp circuits can also use external inputs, such as keys or sensors, to control the display of information. For example, a temperature sensor can be used to display the current temperature, or a button can be used to switch the displayed information.
In addition, the advertising lamp circuit can also use wireless communication technology, such as Bluetooth or Wi-Fi, to receive external information or carry out remote control. In this way, the display content of the advertising lamp circuit can be controlled by the mobile phone or the computer, or the received information can be displayed on the advertising lamp circuit.
Generally speaking, the simple advertising lamp circuit is a flexible and easy-to-use circuit. By controlling the on-off state of LED, various information can be displayed by external input and wireless communication.