I'm making a simple circuit and not sure what components are further needed to complete it.
I've hooked up 9 3W leds in parallel, and they blink for 2000 microseconds(it's a pretty short time and it only needs to blink about once in a minute so I guess I don't need to attach heatsinks on the LEDs.) when a projectile flies between the phototransistors. In this diagram, I couldn't find any proper phototransistor icons, so I just substituded them with led signs.
The LEDs don't need any more resistors, since the datasheet recommends voltages from 3V to 5V. And I also already tested the phototransistors and they worked out beautifully.
the problem is, the battery connected to the battery charging module(TP4056) has a pretty high discharge rate of 65C, because it needs to give enough current in a very short amount of time to the leds. 3W * 9 = 27W so the leds in total eat up 9A of current so I decided to use a battery capable of giving the leds enough current to light up properly. The battery is originally used to power small flying drones.
and now I'm afraid the over powered battery could somehow do serious damage to the mosfet hooked up to the led, or further damage the whole circuit including the microcontroller.
Are there any suggestions on adding any more electrical parts to the circuit? (Capacitors, Diodes, etc...) or is this circuit a good-to-go?