Loved the price and the numerous applications that can be programmed into this microcontroller. Read more

I used these as Bluetooth Proxy devices for my Home Assistant instance. They picked up my Level Home door locks quickly and have kept the connection well. Read more

I was investigating how to enable bluetooth with my Homeassistant installation and found documentation on creating a bluetooth proxy. This item was linked directly on the ESPHome website, which also includes a web-based firmware flasher. Encouraged by how easy this could be, I made the purchase. The competing option was a M5Stack Atom Lite, which looked quite promising as it comes within a case already. After weighing the shipping times, I went with this product. The two are essentially the same price if you factor in a separate case for the ESP-WROOM-32. Sifting through the reviews here, I found that manually installing drivers for the board would be required. If you just plug in the device, Win10 shows a popup but it does not actually install the needed drivers. You will need the easy to google CP210x USB to UART Bridge VCP Drivers, CP210x_Universal_Windows_Driver.zip available from Silicon Labs. After that, the web app flasher was easy to run. It wrote the FW needed and then lets you specify your wifi network. I had read many reviews that were disappointed with horrible wifi range. I am 1 floor below my router and it shows -71dB signal. Not great, but still functional. Maybe that's not bad considering there's no antennae. Other wifi devices in the same room were about -65-70dB. Immediately after connecting to wifi, Homeassistant recognized the device and it was easy to add it as an ESPHome device. It easily found the 3 bluetooth thermometers I wanted to connect (Thermopro TP357). I haven't had any notable dropouts for this first week but will continue to monitor. As the last step I am purchasing a case for the board. There are some generic plastic boxes available on Amazon, but I decided to go with Etsy for a custom 3D printed one. Read more

Works fine on both Arduino and PlatformIO. You'll need to get the USB connection working and a serial modem to show up first, which needs a USB serial modem driver installed. On Arduino, use the board "ESP32 Dev Module", provided by "esp32". Set the upload baud rate to 115200. On PlatformIO, use the platform "espressif32" and the board "esp32dev". (Another review also mentions esp32doit-devkit-v1 works). You can use either the Arduino or esp-idf framework. I'm uploading a better pinout diagram I made. Actual review: Cheap, good price. Documentation for the devkit is not great. The amazon warantee is very unclear--says "contact the manufacturer or check their website", which doesn't exist. Luckily no problems yet. Read more

This is truly my favorite microcontroller packaged into a great development board at an affordable cost. ESP32 works with Bluetooth Classic and BLE for short-distance data streaming. Two of these boards can be connected to each other and share data up to 80 meters away. The Wi-Fi connection is one of the most powerful features. You can connect the board to the internet and communicate with it via a web server. This allows you to make digital applications with physical and analog capabilities. The Wi-Fi communication can also be utilized to make a smart home. You can connect all the ESP32s together and control many different household operations via a Wi-Fi router. The cost is the third big pro. These boards are very affordable for what they can accomplish. This is a must for every circuit lab. I highly recommend this product to anyone who likes building things with microcontrollers. Read more

If you have ubuntu 22.04 and you can't upload anything to your ESP32 equiped with CP2102, here is how to fix it: First run `sudo dmesg -w` and see what happens when you plug your board You should see something like this: ``` [951023.608473] usb 1-6.1: new full-speed USB device number 62 using xhci_hcd [951023.739847] usb 1-6.1: New USB device found, idVendor=10c4, idProduct=ea60, bcdDevice= 1.00 [951023.739852] usb 1-6.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [951023.739854] usb 1-6.1: Product: CP2102 USB to UART Bridge Controller [951023.739856] usb 1-6.1: Manufacturer: Silicon Labs [951023.739858] usb 1-6.1: SerialNumber: 0001 [951023.753463] cp210x 1-6.1:1.0: cp210x converter detected [951023.754508] usb 1-6.1: cp210x converter now attached to ttyUSB0 ``` If some time after connecting you see this...: ``` [951026.615438] usb 1-6.1: usbfs: interface 0 claimed by cp210x while 'brltty' sets config #1 [951026.616472] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0 [951026.616689] cp210x 1-6.1:1.0: device disconnected ``` ... it means that your board automatically disconnects. In this case we have an issue with a preinstalled software called "britty", to fix this issue simply uninstall it: ``` sudo apt remove brltty ``` Then reconnect your board and upload your code, it should work. You may have other software conflicting with your board, in which case start with `sudo dmesg -w` to see what's going on... I update my rating because the board actualy does work and is indeed a DEVKITV1 instead of incompatible NodeMCU shipped by some other amazon sellers... Read more

Ok Read more

Great for my daughters uni project Read more

Am able to connect sensors and host a server on it! Read more

I had a few old Chinese addresses able rgb strips that just had a very basically controller and crappy power supplies. Install WLED on this board and now all the strips are smart light strips and they perform better than some of the other branded RGB led strips. Read more