Pack of 4 ESP8266 smart plugs sold for $13.49 (Promo)

There’s currently a promotion on Amazon for a pack of four ESP8266 smart plugs that are ETL and FCC certified, and sold for $13.49, or around $3.5 per socket.

In order to apply for the discount, you’ll need to the Amazon product page, tick on “Save an extra 20% when you apply this coupon.”, and enter the coupon code “ABVYP87G“.

ESP8266 smart plug pack discount

Once this is all done the price will be $13.49 shipped within the US. The plug works in the 100-240V range, but when shipping outside of the US, you’ll need to pay extra for shipping and provisions for customs duties.

Gosund WP3 key features:

  • 2.4 GHz WIFI connectivity
  • Rated Voltage: 100 – 240V
  • Rated Current: 10A Max
  • AC Frequency: 50/60Hz
  • Max power: 1100W
  • Operating Temperature – -10 ~ 60°C

If you have no interested in running proprietary software, you’ll be happy to know Gosund WP3 smart plugs are compatible with Tasmota open-source firmware. There are instructions to open the plug and flash the firmware…

Gosund WP3 flash firmware

but if you don’t feel comfortable open the device and soldering a few wires, Gisund WP3/WP5 smart plug should work with tuya-convert to let you upgrade the firmware without even opening the device. [Update: Sorry, this won’t work at this time, since the firmware has been updated to close the loophole. See comments]

Via Android Central and thanks to Jon for the tip.

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16 Comments
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DeviceGuru
7 months ago

awesome, thanks for the tip!

Frans
Frans
7 months ago

amazon.de also has discounts on gosund plugs. E.g. a set of 4 goes from eur 34 to eur 26 with voucher.

Jon Smirl
7 months ago

These come with Tuya in flash.

Detailed teardown of this device including schematic.
https://vmallet.com/2020/07/gosund-wp3-smart-plug-teardown-and-schematic/

I ordered four, should be arriving today.

David Willmore
David Willmore
7 months ago

I’ve been meaning to try something like this for a long time. This was enought to get me to try it. Let’s see if I can find as many things to do with them as I had though. 🙂 Thank you, Jean-Luc.

Pheckphul
Pheckphul
7 months ago

[Deleted]

Joe Bleau
Joe Bleau
7 months ago

In for four! I’ve been needing some (wore one up power cycle testing an embedded linux box), and the price is in my target range. Looks like it’d be kinda tricky to open it up, but the OTA hack to switch to open source looks promising.

Jon Smirl
7 months ago

Mine arrived. The firmware is too new for the OTA hack to work. It relied on a bug and Tuya has fixed the bug.

Joe Bleau
Joe Bleau
7 months ago

That sucks. Guess I’ll have to push ’em apart and hope they’re ESP8266 based.

David Willmore
David Willmore
7 months ago

I think I’m in the same boat–or I did the hack wrong. I didn’t use an Rpi, but a docker container on an F32 box. I was never able to connect to the temporary AP because there didn’t seem to be any dhcp server. So, it could be pilot error. I’m curious what @Joe Bleau finds out.

The script did say that “An ESP82xx based device connected accordign to your wifi log.” but I don’t see anything in the logs that would show that. The logs contain almost nothing.

Joe Bleau
Joe Bleau
7 months ago

I’ve tried two, and both are too new (ID: 02). I did not get any ESP82xx message…where/when did that appear? If I know it’s an ‘8266, I’m willing to pop it open. But if I know it’s not, I’ll try and return to AMZN.

Joe Bleau
Joe Bleau
7 months ago

I’ve now tried all 4 (too late to edit my other comment). No ESP82xx messages, that I can see (I used an r-pi4). But I did pull the OUI for each: c4:dd:57, 24:a1:60, and 70:03:9f. All lookup as Espressif Inc. But the ID for all 4 starts with 02, so no OTA update.

David Willmore
David Willmore
6 months ago

I think it was an artifact of the way I was using Docker on a F32 machine to run tuya. I configured an Rpi3+ with a fresh install and it failed with a PSK error. So, I have no evidence they’re ESP based. Unless they’re easy to open, I’m sending mine back. I don’t want to destroy them to reprogram them. I’m okay with flashing them on the board as long as I can get to the board readily. Please share what you find out.

Craig Hollabaugh
7 months ago

Thanks for tip, just ordered $14.12 total.

lanefu
lanefu
7 months ago

Its a huge gamble.

The glory days of tuya convert are over. Most of the tuya devices switched to a new tuya module that has a pin compatible microcontroler that is not esp8266

lanefu
lanefu
7 months ago

That being said.. I bought one of these WP-9 mini power strips last year and its been awesome with tasomta.. gonna roll the dice on this deal just in case 😛

https://smile.amazon.com/Gosund-Outlets-Protector-Charging-Extender/dp/B07TS2GZCJ/

lanefu
lanefu
7 months ago

Update! Was Successful using Tuyaconvert on WP-9 from my link above!

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