Basic Circuit Modification Method
The simplest way to make an LED flash stay on is to adjust the circuit. The flash works because an oscillator in the circuit controls the on/off state. We can short-circuit the output of the oscillator or directly connect the positive and negative terminals of the power supply to the LED, allowing current to continuously flow through the LED. Note that an appropriate resistor should be connected in series to prevent excessive current from burning out the LED.
Component Replacement Solution
If you don't want to modify the original circuit, you can consider replacing components. Replacing the flash LED with a regular, normally bright LED is the most direct method. Alternatively, you can remove or replace the flash control component in the circuit, such as removing the 555 timer chip or replacing the flash IC with a voltage regulator. This method involves less circuit modification and is suitable for beginners who are not skilled in soldering.
Using an External Controller
The most flexible method is to use an external controller. Many small LED controllers are available on the market, which can achieve various modes such as constant light, flashing, and breathing through simple wiring. To use, simply connect the controller's output to the LED and the input to the power supply. This method does not require modifying the original circuit and the flash function can be restored at any time, making it the most recommended approach.
