Smart Switch connects to wifi, but app fails to detect device

Hi, I am trying to pair my smart switch with wifi, and for now i am not getting any luck.

My switch brand is SMATRUL, but is a “tuya-enabled” switch, and the manufacturers require you to pair with smart life app. For some reason, pairing is a painful process and doesnt seem to work at all. The switch itself works fine.

When pairing using EZ Mode (wifi) it connects to wifi and i can see in my OpenWRT settings that the device is indeed connected (ESP etc etc)


but in the app, it just said pairing timeout, and that no devices is detected. It is frustrating since I have to wait for suitable times to power off the mains to work on the switch, and i cant pair it.

I plan to use localtuya but seemingly all localtuya solutions require me to first pair the device.

Are you sure that is the device?
Tuya haven’t been using ESP devices for a very long time.

I am pretty sure, since I have created new a AP just for the purposes of pairing. the device list only consists of my phone only. After a few seconds of pairing, the light stops blinking on the switch, and on OpenWRT the ESP device pops up.

If that’s the case then I suggest you just flash it with ESP-Home.
The grass will be greener, the sun will shine on you, the color of the flowers will be more vibrant, and your life will be much easier.

There is really no reason to keep an ESP device stock.

Smartrul with esp? That must be from older stock since i just got one recently and it’s using beken on that. As another user suggested, flashing tasmota/esphome is the way.

Have you try compatible mode? Also bring the device as close as you can to the router for initial pairing

Sounds like a good suggestion to flash esphome, but gladly the seller is willing to send a new unit without replacing. I’ll wait for the new unit to come, and tinker with the old one when it arrives.

And for the compatible mode, are you referring to AP mode? and yes i already bring the router as near as i can. still no luck :confused:

as a reference, here is the product page, hint me whether if its a new or old product.
Smatrul Smart Switch

(i bought the 2gang white wifi+rf433)

New batches don’t have esp’s anymore since they mostly switched to beken.
Curious though, what’s the chip inside? TWE3S?

Ordered a bunch of their E27 bulbs recently and all came with CBCL9 (BK7231N). Which i can still flash with openbk/esphome

Based on the switch product page, no details provided on the chip. as for the switch itself, its mounted on my wall and I’m waiting for the new one to arrive. I will replace the old one and disassemble it. Will update on what chip it’s using.

UPDATE: turns out it is an ESP after all. A quick MAC Address reverse search revealed so:
image

Found out the chip inside. It was an ESP8285 chip. I got the new one up and running though.

Here is the chip close up, no esp header pins exposed on the PCB though.

Looking at the pinout of the 8285 then I belive you have IO0 and TX on this side.
Probably you got RX on the other side:

There seems to be a lot of holes above the chip, that is probably the exposed pins, they are just unmarked.

EDIT:
Just as I posted I realised the pin is probably here:

Just use the multimeter and find out

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If this is the same one i have, this is the pinout


From left, 3.3v, rx, tx, gpio00, reset, gnd

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holy sh** this is the exact thing, thanks man! i actually noticed the ones at front but since they were unmarked, i didnt think it was the one im looking for. But since you verified it, that makes sense!

I’ll try to further verify incase they made different pinout layout, just in case.