Hi anyone familiar with relay which has "dry contact" features? like this SONOFF RE5V1C - 5V Wifi Inching/Selflock Relay Module. the relay has no voltage at all? i prefer sonoff sv because of flexible input voltage but sonoff SV does not feature dry contact. can i use non dry contact relay with Autogate board ?
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You can see the difference between putting the capacitor across the switch and across the lamp in my rough diagram below

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Putting at the lamp there means you create N line by bypassing the lamp. Crossing at the switch is like doing nothing 

Actually, the lamp like incandescent lamp is connecting the N to the switch. So, basically, when you have the touch switch replacing the normal switch, the current can flow and power the touch switch. Since the lamp filament is high resistance, the amount of current that can flow though it is low, enough to power the touch switch but too low to glow the filament. Therefore, the lamp is actually on but just cannot see the light 

Using LED lamp in place of incandescent lamp the amount of current is even lower, thus not enough power to operate the touch switch. That is why the capacitor is put at the lamp to leak a bit more current to touch switch circuitry to enable it to operate. Otherwise, the touch switch will not work at all or barely work which cause the flickering LED light.

Some touch switch can still work without bypass capacitor. Maybe it uses very less power or the LED bulb used has enough leakage current to supply to the switch. Therefore, the bypass capacitor is not a must. You just need to install if flickering happened, but if you still want to put no harm is done. The capacitor will bypass very small current due to its low value thus robbed very low current. This will not affect the operational of the LED of normal bulb.

Wah! Your auto-gate board is small  :thumbsup:

Hi, i have the same autogate as you and have been thinking how to control my porch light when i open the gate. Just wondering how do you tap the signal when the gate open or close for your automation?

Im not an expert with electrical so please bear with my stupid questions...

Edit: im using mi ecosystem with no custom firmware.

Pillar Lamp Control
Automatic Mode: When the gate is open during it is dark (detected by the photo sensor), pillar lamp will be switched on. After the gate is closed, the lamp will go off after 1 minute. Manual Mode: On and Off from the keypad or the remote control. [#]

From the photo near the bottom right, I believe he connect the Common and NO port of the Sonoff to the place labeled as "P SW Normal" of the autogate board. Refer to the white cable with a red strip for connection

Actually I hope someone bought the smart plug and can share the shopee or lazada link

If you are using HA with ESPHome, can try from the blog below
https://frenck.dev/diy-smart-doorbell-for-just-2-dollar/

Cheap parts and no soldering needed

:thumbsup:
What's the maxiumum resolution? Or is camera dependant?