📡 HiLetgo ESP8266 ESP-01 WiFi Module Development Board (3pcs) - Serial Wireless Transceiver with LWIP AP+STA Compatibility for Arduino Review

finally tried these esp01 modules and they work great. Don't forget to get an ESP01 programmer and do the jumper trick to program them. It worked right away and I planned to hook them up to soil moisture sensors so I knew when to water my plants. Definitely recommend.

I bought 3 packs for a project and couldn't get them to work. I have followed several guides to connect to Arduino. Tutorials conflicted with pinouts, how to program, which serial pins are TX/RX etc. I never found a configuration to use them in and ended up with another product with much better documentation and support that worked. - from the box.

I love ESP8266 devices. I have about a dozen at home for various purposes. They are so small that they can be placed anywhere and consume very little electricity. I download ESP Easy to an IoT device and use it for thermometers, motion sensors, door (reed) switches and relays to turn lights on and off. The possibilities are endless!

I've just started playing with this. So far, so good. The only thing I'm having a bit of trouble with is that the CH_PD pin needs to be set high for it to work independently of FTDI. The tutorials I've worked with don't mention this. I found several references to this issue in troubleshooting posts and blogs. It turns out that some units are made this way. It's not a big problem as long as you know about it.

Great quality. Very clean chips. They work exactly as expected. I have already ordered a few items from HiLetgo and have never had a problem. I love the packaging of these esp-01s. Excellent!