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i have a simple humidifier that only powers on by a touch sensitive switch.

I need to bypass it because when the power is off after that the device doesnt start automatically.

I tried some things but i only know the basic on circuit boards.

Can you help me please?

Thank you in advance.

enter image description here

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    \$\begingroup\$ You probably can't. That board most likely uses a microcontroller and that function is controlled by the burnt in program. Bypassing that might also bypass some safety functions. This is a problem with many modern electronic devices such as rice cookers, etc., that can't now be run on time switches, etc. \$\endgroup\$ – Transistor Jan 23 at 23:11
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    \$\begingroup\$ Arduino Nano driving a SG-90 servo operating a fabricated faux finger? \$\endgroup\$ – Spehro Pefhany Jan 23 at 23:15
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I am not sure about touch sensitive switch.

Try to solder 2 wires to the switch and connect to an external push-button.

If your device starts with this external switch, then you can add a timer on delay, one second time.

The coil will be connected to the supply voltage, and a normaly closed contact wired in parallel with the touch sensitive switch. That way you will get a pulse whenever the supply is switched on, and the device will start if everything is Ok. Safety will be as if you had pushed the touch sensitive switch by hand.

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    \$\begingroup\$ This is welding. Welding melts the piecesof metal you are joining. This is soldering. In soldering, only the filler material melts. Most electronics work is soldered, not welded. \$\endgroup\$ – JRE Jan 25 at 20:14
  • \$\begingroup\$ Ok, sorry for my poor english. \$\endgroup\$ – Bravale Jan 26 at 16:48
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    \$\begingroup\$ Even native English speaking people mix up soldering and welding. \$\endgroup\$ – JRE Jan 26 at 16:52
  • \$\begingroup\$ I tried it but no luck. When you plug it to the wall the device turns on automatically now but after 2 seconds keeps restarting again and again.. \$\endgroup\$ – Fotis Charchalakis Jan 26 at 17:48

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