A WiFi and Bluetooth board based on ESP32. It is an affordable Internet-of-Things board that works across all Arduino based sensor and modules.
The board design is basically perfect. It takes more than a little inspiration from Adafruit’s Feather series. Imitation is the sincerest form of flattery. It has 4 MiB flash memory onboard, a USB-serial adapter (cp210x), and a LiPo battery charger and connector. All the relevant pins are broken out and well-labeled, especially on the bottom. It has a nice central reset button, and even a single user LED for your blinking pleasure.
The default firmware seems to be stuck in a loop scanning our WiFi network, and it doesn’t seem to be running a soft AP like some ESP8266 firmwares do either. We couldn’t figure out how to make it associate. That’s cool, we’ll be flashing our own firmware soon enough anyway.
WEMOS LOLIN32 V1.0.0 - wifi & bluetooth board based ESP-32 4MB FLASH Features.
At its heart, there's a dual-core or single-core Tensilica Xtensa LX6 microprocessor with a clock rate of up to 240 MHz. ESP32 is highly integrated with built-in antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power management modules. Engineered for mobile devices, wearable electronics, and IoT applications, ESP32 achieves ultra-low power consumption through power saving features including fine resolution clock gating, multiple power modes, and dynamic power scaling.
- 4MB Flash
- Lithium battery interface, 500mA Max charging current
- Microcontroller ESP-32
- Operating Voltage 3.3V
- Digital I / O Pins 26
- Analog Input Pins 12
- Clock Speed (Max) 240Mhz
- Flash 4M bytes
- Length 5.8mm
- Width 2.54mm
- Weight 5.8g