3pcs ESP8266 ESP-01 Serial WiFi Wireless Transceiver Wireless Module Development Board LWIP AP+STA Compatible with Arduino

Highly underrated in 2026 for esp-now us with other boards like pi picos or yd-rp2040's. Great value for money. Fast connection and speed. They are tiny and weigh almost nothing. Their functionality is where I think they are underacted as using them as a module vs a mcu. Great quality. Just put in an order for more and and order for the S variants.

I love ESP8266 devices. I have about a dozen in my house serving different purposes. These are so small they can fit anywhere, and use very little power. I load ESP Easy on the IoT device, and use them for thermometers, motion sensors, door (reed) switches, and relays to turn on/off lights. The possibilities are endless!

I happened to pick the bad one to start my project. Just my luck!. After spending hours troubleshooting my setup, I found out that it was bad. I was not getting an AT OK back. After swapping it out, the other 2 worked fine. They are also doing their jobs quite well. They are very small units so working with them is tricky.

Funciona perfectamente.

Worked great out of the box and using ChatGPT, it was really easy to get the device doing things. Recommend and will buy more.