REES52 Serial Wi-Fi Wireless Transceiver Module for IOT ESP8266

Good Product .I had a few problems for uploading my program onto it for the first time .. but then google helps .If anyone else is having a problem a problem then the GPIO pin has to be made ground then reset then release them to enter flashing mode .And through the pins are 5 V tolerant they are meant to work with 3.3 V ,so use them at 5 V at your own risk .And the problem which i face often . Power Issue . The Module draws a lot of current , that why best is to use external source (with common ground very important) .

The hardware is good enough to work but it should be noted the firmware is a bit old and it might cause some problems with WiFi connections and blynk. To check the firmware version please use AT commands (you will get many tutorials on youtube/google). It's recommended to update/flash the latest firmware for most efficiency (you will get many tutorials on youtube/google regarding Esp8266/01 Firware Flash).

This is an ESP-01 module, running an ESP8266.Can't believe how cheap this is. If you don't need serial, you can use 4 GPIOs. Range is good. The ESP8266 is powerful, and this module has plenty of RAM and ROM. Community support is really good.It comes with the AT firmware, which I promptly replaced with the community Arduino version. Programming this thing is easy, and it can work either stand-alone or with an Arduino. Just remember to use a separate 3.3v power supply and a voltage divider/level shifter if using with 5v boards.

Doesn't much useful when compared to bluetooth module but works

Product is working fine. Was able to connect to wifi and sent data on web.

It is very good product . If the product delivered with out any damage , it will beacuse packaging is very good. And it worked well with Arduino. You can buy bro ( who is reading my review ).

Works fine, ping, WiFi, AT commands everything working.but since it require 3.3volt supply, you will have to either use readymade adaptor which plugs in your PC's USB port or you need to use Arduino and use its 3.3v pin which becomes a little complicated for first time users, circuit diagram for using arduino is available at website teomaragakis. this board is using a old fireware that also needs to be updated.

Reviewing after a month's usage. I tried programming the device thrice and failed each time. It doesn't even respond to AT commands in the serial monitor. Bought other products from Rees52 and was a happy customer till this but highly disappointed now. Regretting the purchase as I missed the return deadline as well.

Purchased this based on other reviews that said it works with the Prusca. Worked like a charm with no issues. Such a big difference being able to send prints to the printer without the USB! I really didn't like the USB transfer process but got used to it. Now after being spoiled with this Wifi card, I look back and really hate the USB process now! Big quality of life luxury for less than $10 shipped. Great purchase.

Did the trick for my printer.

Excelente compra, tamaño perfecto

Work as advertised

I highly recommend these, I bought other ones from another seller and wasted a lot of time to get them to work and they didn't, replaced with these in same configuration and worked immediately, no fuss!Use *3.3V* FTDIMake sure you have a good cable and quality FTDI adapter that can supply stable power.Connect Vcc (3.3V) and GNDTX and RX goes to opposites on FTDIIO0 to GND to program the chip and float to run your appRemember to cycle power after any configuration change (IO0 change)and you should be good to go.