2pcs ESP32-DevKitC ESP32-32U Core Board ESP32 ESP-32 ESP32U Development Board for Arduino

Works as expected

These little boards are helpful! However, this revision uses an Xtensa LX6 - which is a pain to get working compared to the RISC-V revisions. That's especially true for Rust users - RISC-V is fully supported after you run the single `rustup` installation command. However, Xtensa boards require an extensive setup, which is unsuitable for beginners. Afterward, you'll likely face weird, undocumented problems that leave you running scripts for hours. If you do end up with this version, there are limited online resources to assist you. The setup documentation isn't detailed, and some pages are contradictory... As such, I don't recommend this version of the board. Grab some fancy RISC-V revision - you won't regret it!

Great, and cheap, esp32’s. Usually you end up with a bad one in the bunch and I have ordered these several times and haven’t had any issues. It’s a good buy if your looking for an esp32!

I purchased these HiLetgo ESP32-DevKitC boards specifically to use with WLED, an open-source WiFi LED strip controller software, for an outdoor WS2812B led light project. I'm glad to report that both boards worked flawlessly right out of the box. In my experience, when buying multipacks from other companies, it's common to get at least one or two non-functional units. But not with these - they were perfect and performed as expected. Using an external 2.4GHz 6dBi antenna (sold separately), I was able to place the unit about 10 feet away from my router, even through an exterior wall, without any connectivity issues.

An external antenna was the perfect solution for a security system project that needed to fit inside my legacy metal alarm system box.

This board and a second board I bought work extremely well with every Arduino sketch I have used in them. As mentioned in the above headline the board is designed to be used with an external antenna for WiFi usage. You will notice the gold plated antenna connector is located in a notch in the corner of the metal card. It is for the antenna. Here is an antenna with coax and connector that will fit the board connector: Gain=8dBi (or 6.3 times gain isotropic ) RP-SMA Male WiFi Antenna + 20cm U.FL to RP-SMA Female Extension Cable for Mini PCIe Slot - Amazon supplier,Tenmory Store. Note, the antenna connector can be installed by first centering with the board connector and pinching with your fingers. You should get more than 100 foot coverage using this antenna in an open space. There is no change required in jumpers or wiring required.

I bought two , they Stopped after several times programming

I purchased this as a possible replacement for a "HiLetgo: ESP-WROOM-32 ESP32 ESP-32D" that due to placement was experiencing poor WiFi connectivity and prior to deploying it, I wanted to compare the signal strength of this with the device I was planning to replace. I place 3 ESP-32's next to each other and started the network to see the relative signal strengths, from the picture you can see this data for each of the following devices: ESP32-Test01 - HiLetgo: ESP-WROOM-32 ESP32 ESP-32D (same as the device I was looking to replace). ESP32-Test02 - HiLetgo: ESP32 Mini ESP-WROOM-32 (because I had one laying around to compare) ESP32-Test03 - HiLetgo: ESP32-DevKitC ESP32-WROOM-32U with Highfine: 2.4GHz 6dBi Indoor Omni-Directional WiFi Antenna 802.11n/b/g (this device) This device/antenna configuration seen to be 12dBm stronger, so I'm hoping that it will be able to address my issue.

It's actually Micro-USB, not USBC. Disappointing