Problem with inductive load ?How to fix?

Question

Arduino

I'm doing a small project, I made a schematic diagram for it. (The solenoid must be pulled in and out with the help of a transistor on command from the arduino.) I started to assemble everything on a breadboard. Everything works correctly, EXCEPT that when the solenoid is energized, the power immediately turns off and back on. How can this be fixed? Thank you!

Answer 1

the solenoid consumes too much energy - the weak dc-dc module goes into current protection - the "12V" voltage drops to "zero" - the "5V" voltage is similar - the processor power supervisor module clicks to reset.
Conder will not save, because the RL circuit does not give current surges when turned on.
at least take out the power of the microcontroller in a separate circuit.
as a maximum to recalculate the solenoid and solenoid power.
and in general, I think the calculation of the distribution of currents / powers in the circuit was not done, but it is necessary ...

Answer 2

What is the rated output voltage, maximum output current and U4 type? What is the solenoid current?
Put a capacitor on output U4.

Answer 3

The turn-on current of the solenoid is higher than the current that the power stabilizer can give, a voltage drop occurs and the board is cut down. You can try adding power capacitors to the U3 output,
or turn on the solenoid more smoothly using PWM

Answer 4

The way you showed it in the diagram, in no case should you connect it.
In general, any load is connected to any microprocessors through their drivers. Otherwise, you risk burning the microprocessor. There are no protections on debugging arduinos, let alone special GPIOs for connecting loads.
On the video of this platform, your situation is commented...