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Your cart is empty. ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area.
Specifications:
Serial/UART baud rate: 115200 bps
Input power: 3.3V
I/O voltage tolerance: 3.6V Max
Flash Memory Size: 1MB (8Mbit)
WiFi security modes: WPA, WPA2
Tip:
The CH_PD pin must be set high for it to run independently of the FTDI.
Don
2025-08-29 11:33:48
Worked great out of the box and using ChatGPT, it was really easy to get the device doing things. Recommend and will buy more.
Ralph McCoy
2025-08-09 17:50:27
EXCELLENT
CV
2025-08-02 15:53:35
I've been fighting these off and on for a week trying to get one to work with an SKR 1.2 and OnStep. Turns out it needs the CH_PD pin pulled high to work (and to be programmed in addition to having GPIO0 grounded). This is shown in the diagram and in the description, but the translation(?) to English is a bit unclear.Minus 1 star for this odd requirement on an otherwise good module. If it always needs power, why bring it out as a pin? Maybe an enable/disable feature? I have to either dig into the OnStep firmware and try to force that GPIO high on the SKR board or modify the module's header to isolate CH_PD from the socket and jump it to VCC.
Carlos Guterrez
2025-07-26 17:58:41
Bought this for upgrading our prusa mini 3d printer. It’s was so easy just plug and play and download update for prusa also, a few other steps and bam, no more unplugging and plugging the usb stick. Perfect purchase and fast shipping.
Marc H.
2025-05-01 10:05:31
Did not work at all. Not with an Arduino. Not with an FTDI. Low priced and not worth it.So low priced that it is not worth contacting tech support or returning it.
ezra dooley
2025-04-06 11:51:06
great little chips just order the programer it will save you so much time can use with many aplications
Dana L
2025-03-07 18:24:03
I bought these with the intention of WIFI enabling another device. I managed to mostly get them to work, but with some caveats.As some people have said, the firmware on these is very old. Part of the issue is that they don't have enough flash memory to run the latest firmware. You would need 4MB of flash to do that, whereas these only have 1MB. If I were going to do this again, I would definitely get a ESP-01s with 4MB, or an ESP32.I was able to get these to connect over SSL to any web server that doesn't require SSL certificate verification. The issue is that the server I want to connect to apparently requires this. When I turn on certificate verification, I can't connect to any web server. I believe this might be resolved by upgrading to the newest firmware, which I can't do.Another fun thing about these is that they don't have the firmware commands to send HTTP GET/POST directly, so you will need to build the requests manually via a TCP connection. This is totally doable, but I had to figure out how to do this.So, in short, if this works for your use case, it's a great deal.
Cody P.
2025-02-05 12:11:16
Used these modules to make HomeKit door contact sensors for all the doors in my home. I liked them so much I ordered another set to test out using some as temp/humidity sensors and an IR remote.
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