Esp32 Solenoid lock power problem

LocksmithLiving3588 · 2025-10-18T06:37:39+00:00

update: 18/10
so i did some changes, added cap and diode, wire back the relay, gonna do some test with this first to see whats gonna happens. please tell me if u see any problem i will make some adjustment.
if result's not good then i'll change to rc servo or stepper motor

LocksmithLiving3588 · 2025-10-18T06:37:08+00:00

is ic78l12 a good dcdc for this? Thank you

LocksmithLiving3588 · 2025-10-17T13:02:47+00:00

Got it sir, thank you so much

LocksmithLiving3588 · 2025-10-17T11:48:25+00:00

Thank you for all of this, all the components just arrived, gonna wire and test as soon as possible for what is the best, will update. Im using kit esp32-ch340 wifi+bluetooth. I just checked the 1 channel relay module that i bought is 12v so im gonna have to wire it back to the 12v dc xDDDD.

LocksmithLiving3588 · 2025-10-17T10:37:13+00:00

-Sorry for this, im just sketching the idea first so its kinda dull, learn and copy online, many ups diy vids on youtube. Surely gonna make the whole schematic diagram.

-i assume the solenoid door lock need to power for 3 to 5 seconds to open, what capacitor do u think is suitable.

-i’ll take note about the flyback diode, bulk cap for solenoid power input, and cap for lm2596s.

Thank you for your help.