2Pack ESP-WROOM-32 ESP32 Development Board WiFi Bluetooth CP2102 Dual Core 2.4GHz Microcontroller Compatible with Arduino IDE, NodeMCU

Used it for controlling leds with wled and it worked great! Cheap and reliable

I am using these to connect things to my smart home. They make good motion sensors connected to wifi as part of my home assistant setup.

These frankly are great setups, but if you don't know what you are doing, the esp32-cam is NOT for you. (You can learn, but it will be frustrating.)YOU WILL NEED A SERIAL CABLE THAT IS 3.3V DATA (Most are, but check, as 5V level will kill it) OR ONE OF THE PROGRAMMER BOARDS FOR IT.I had 1 of 2 fail, and it took a bit to get a replacement. However, That came and the seller was responsive. (Doing a bit of testing, it was the board that was bad, not the camera. So cool a spare camera (which pretty much only works with this.))They are good chips, if you program them with Tasmota, you can easily adjust the setup for them. They can be setup pretty easy, but the first flash can be a problem the first time you do it, and I did have Tasmota corrupt it's settings, not want to work with the easy gui tools and had to go back and use the esptool.py to flash it clean. (As far as I tell that's Tasmota's issue. Worked fine flashing with the esp32-cam example program in Arduino, then back, if you do use the esptool.py to flash the *factory* bin to clear the settings, the normal precompiled ones leave the settings intact.)Pros:CheapResponsive SellerCheap wireless camera that only requires a 5V power source!Extra pins for SD and/or other sensors (presence, temperature, etc. Just about anything that Arduino supports works.)Cons:1 failed, was replacedInitial setupEven with the failure, There's not much that's in the same price range. It's pretty good, though you trade framerate for quality or vice-versa. (only a few fps at 1600x1200, or 1280x720 (720p) to 60 at lower resolutions) So I'll give it 4 stars.

I recently had the pleasure of working with the D1 Mini NodeMCU ESP-8266 WiFi Module Development Board, and I'm thrilled to share my overwhelmingly positive experience! As a hobbyist and maker, I've always been drawn to innovative technologies that enable me to bring my ideas to life. This little board has exceeded my expectations in every way!*Why I love it:*1. **Compact size**: The D1 Mini's tiny form factor makes it perfect for small-scale projects or prototypes.2. **Easy to use**: With a simple Arduino-like programming interface, I was able to get started with minimal fuss.3. **WiFi capabilities**: The ESP-8266 chip provides reliable and efficient WiFi connectivity, making it easy tointegrate IoT features into my projects. Plug it in and it connects without any fuss.4. **Low power consumption**: This board is designed for energy efficiency, which means it can run for hours on a single battery, usb cable and even be powered by a small solar panel.5. **Community support**: The NodeMCU community is incredibly active and supportive, with plenty of resources available to help you get started and overcome any challenges.*Real-world applications:* + IoT projects, such as home automation or environmental monitoring + Robotics and automation + Prototyping and testing WiFi-enabled devices + Maker and DIY projects that require wireless connectivity**In conclusion**, I'm thoroughly impressed with the D1 Mini NodeMCU ESP-8266 WiFi Module Development Board. Its compact size, ease of use, WiFi capabilities, low power consumption, and community support make it an excellent choice for anyone looking to bring their IoT or maker project ideas to life.

I'm working on a project, and I required a camera for the project, and this ESP-32 CAM solution worked great. I have purchased other ones in the past, and this was my first with this vendor. I ordered 3 sets (6 total ESP32's), and I went through 4 of these units, and NONE of them would take a firmware upload. I reached out the vendor and asked for advice. In the few hours it took to get their reply, I kept at it, and discovered that these ESP32's will ONLY take a firmware upload, IF you use the 5V pin and the GND pin directly below it along with the TX and RX pins to function. IF you use the GND pin under the TX/RX pins, they will NOT. Since this is not mentioned anywhere on the product description, or reviews, I figured I let the vendor (Hosyond) know this and to share that with their product description. Hopefully, this will help someone else who is going through the same headaches. Also, don't forget to short the GPIO-0 and GND pins to put the ESP-32 CAM into "receiving" mode, so that you can upload your firmware, etc. Cheers-

*** Received replacement *** Upping review to 4.999 stars (I'll round up), the modules work just fine. Thanks!Ordered three, received three. Two of the three flashed without error, third would not flash. Tried several methods, two different PCs, but simply could not write to this card via USB. Asked vendor if I could replace, vendor asked for picture and said, "we'll send a replacement". THEN the vendor said... wait! engineer wants a video. I'm not in the business of making videos for a $4 card, and the response system doesn't accept videos (yes, I tried). So I smashed the module with a hammer, sent a picture, and told them I was done. I'll happily update if they do actually replace the card, but CAVEAT EMPTOR.Update: vendor has now stated they will be sending replacement. I'll update if/ when I receive.

boards work flawlessly, easy as ever to set up with WLED. Highly recommend you get a case for it to protect it and keep the look clean.

These things are always good. Works like a dream!