Circuit Documentation

Summary

This circuit is designed to control a KY-008 Laser Emitter using a push button and a MOSFET. The circuit also includes an LED indicator and a TP4056 module for charging a 18650 battery using a solar panel. The resistor is used to limit the current through the LED.

Component List

1. Resistor

   • Description: A resistor with a resistance of 100 Ohms.
   • Pins: pin1, pin2

2. Push Button Round

   • Description: A round push button.
   • Pins: leg0, leg1

3. MOSFET gate IRF9540N

   • Description: A P-channel MOSFET.
   • Pins: Source (S), Drain (D), Gate (G)

4. LED: Two Pin (white)

   • Description: A white LED with two pins.
   • Pins: cathode, anode

5. KY-008 Laser Emitter

   • Description: A laser emitter module.
   • Pins: SIG, 5v, GND

6. Battery 18650

   • Description: A rechargeable 18650 battery.
   • Pins: +, -

7. TP4056

   • Description: A lithium battery charging module.
   • Pins: OUT-, B-, B+, OUT+, IN-, IN+

8. Solar Panel

   • Description: A solar panel for charging.
   • Pins: gnd, vcc

Wiring Details

Resistor

• pin1 is connected to:

  • Push Button Round (leg0)
  • KY-008 Laser Emitter (SIG)

• pin2 is connected to:

  • LED: Two Pin (white) (cathode)
  • MOSFET gate IRF9540N (Gate (G))

---

Push Button Round

• leg0 is connected to:

  • Resistor (pin1)
  • KY-008 Laser Emitter (SIG)

• leg1 is connected to:

  • TP4056 (OUT+)

---

MOSFET gate IRF9540N

• Source (S) is connected to:

  • LED: Two Pin (white) (anode)
  • TP4056 (OUT-)

• Drain (D) is connected to:

  • KY-008 Laser Emitter (GND)

• Gate (G) is connected to:

  • Resistor (pin2)
  • LED: Two Pin (white) (cathode)

---

LED: Two Pin (white)

• cathode is connected to:

  • Resistor (pin2)
  • MOSFET gate IRF9540N (Gate (G))

• anode is connected to:

  • TP4056 (OUT-)
  • MOSFET gate IRF9540N (Source (S))

---

KY-008 Laser Emitter

• SIG is connected to:

  • Push Button Round (leg0)
  • Resistor (pin1)

• GND is connected to:

  • MOSFET gate IRF9540N (Drain (D))

---

Battery 18650

• + is connected to:

  • TP4056 (B+)

• - is connected to:

  • TP4056 (B-)

---

TP4056

• OUT+ is connected to:

  • Push Button Round (leg1)

• OUT- is connected to:

  • LED: Two Pin (white) (anode)
  • MOSFET gate IRF9540N (Source (S))

• B+ is connected to:

  • Battery 18650 (+)

• B- is connected to:

  • Battery 18650 (-)

• IN- is connected to:

  • Solar Panel (gnd)

• IN+ is connected to:

  • Solar Panel (vcc)

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Solar Panel

• gnd is connected to:

  • TP4056 (IN-)

• vcc is connected to:

  • TP4056 (IN+)

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Code

There is no code associated with this circuit.