Review on 📡 HiLetgo ESP-WROOM-32 ESP32 ESP-32S Development Board: Dual-Mode WiFi + Bluetooth Microcontroller with Integrated Antenna RF AMP Filter for Arduino IDE by Rusty Heredia

Conclusion: This is a well made device. There are nits, but for the price I think it's a good deal. You can use the Arduino IDE and a framework, or the ESP-IDF framework, or even mix and match a bit. It uses version 1 of silicon (see below). Pros: * It flashes without having to press any buttons; I suspect this is done using the de facto standard of downgrading some serial lines. Solder joints are clean with sufficient solder and no flux residue. The circuit board is black, which is both a plus and a minus: it's difficult to trace the wires, but you probably won't need them anyway.* The built-in antenna doesn't protrude beyond the motherboard, unlike some other me 'have seen. As far as I can tell, the circuit board underneath this antenna is blank, but the pins are a little close. This can affect functionality, but I can't measure it. Cons: * The pinout is only printed on the bottom of the board, making it completely unusable once installed in a breadboard. *Bottom screenprint with pinouts and other info is a bit blurry, although readable.* No connector for external Wi-Fi antenna and space to solder u.fl or even better RP-SMA.* Built-in voltage regulator is standard linear model, allowing multiple Low power modes are limited to actual low power consumption. * There is a built-in LED that indicates power, which also limits the usefulness of the power saving modes. It can be removed. * It uses a different USB chip than the standard FTDI. Since there are drivers for every major operating system, this is a minor issue, but I'm not used to installing Mac device drivers.