ESP-WROOM-32 ESP32 ESP-32S 2.4GHz WiFi + Bluetooth Dual Core Board with RF Antenna AMP Filter AP STA Compatible with Arduino IDE (3 Pack)

Really useful microcontroller

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...

I used these for ESPHOME bluetooth proxy to extend a weak bluetooth signal. At first I thought there was an issue with these boards because they would lose signal every so often. After further testing I realized that the micro usb cable powering the chip would lose voltage when the wifi would increase power. I switched from a cable that was a foot to a cable that was 6 inches and all the problems disappeared. I hope this helps other people with similar issues.

Like another reviewer mentioned, only 2 out of 3 could be programmed. The third one just says "A fatal error occurred: Failed to connect to Espressif device: Wrong boot mode detected (0x3)! The chip needs to be in download mode." from esptool no matter what I do. I tried via USB as well as via pins with a serial programmer. It just won't work.

Item As described, AMAZON DO NOT CANCEL STARGATE !!

super versatiles y completas

I picked these up to make a cheap COB LED strip smart. It only came with an RF remote which is not sustainable. They arrived without documentation, but that isn't a problem for me. My will is stronger than that. They arrived sealed in antistatic bags and looked new. The onboard USB port is a micro USB. I used it to flash WLED and setup wifi. I powered the board and the LED strip from the same power source because they used the same voltage. Then, I used a GPIO pin to communicate with the light strip. It was easier than I thought it was going to be. A heat sink is not recommend because the ESP chip does not produce much heat. They do not include a display. The quality is fine for my purposes. If you are just getting started with something like this, read the WLED site or ESPHome. Step 1. The website will flash the firmware for you.