IoT - Sinilink XY-WFUSB

• $5 Sinilink WiFI USB Power Switch Works with Tasmota Firmware, Supports up to 20V/5A
• scargill - AliExpress Sinilink WIFI USB Controller
• blakadder - Tasmota Template

	3v3
	RST
	GPIO-0
	RX	or maybe TX	Apparently, some have them reversed I have one that's backwards...
	TX	or maybe RX
	GND

Unlike the Sonoff Micro, The Sinilink actually feeds the data pins through.

Also, It's an ESP8285, so it can be flashed with Tasmota!!!

NOTE: The housing on the female USB connector is NOT grounded. This is important if you decide to attach a wire to GPIO-0 on the little contacts & ground it for booting to flash-mode. (No need to ask how I learned this...)

Adventures in careful work

I bought 2 of these a while back & took a long time to work up the nerve to flash them.

Rather than go hunting for 1.27mm pitch pin headers or tiny little pogos, I soldered 30AWG wire-wrap pigtails in the holes. Then I used my prototype ESP-Everything! programmer on them.

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In the process, I discovered that the button doesn't seem to be on GPIO-0... So I went back & added wires to GPIO-0 & RST. (Then found out about the non-grounded connector)

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Eventually tho... Got it working.

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W00t!

Some thoughts

There has been discussion about whether this sort of device is actually useful.

I've found a good reason to have at least one.

I've plugged my programmer through one into my dev machine. I can now disconnect the programmer without physically unplugging it.