ESP32 DevKit V1

Specifications

The ESP32 is dual core, this means it has 2 processors.
It has Wi-Fi and bluetooth built-in.
It runs 32 bit programs.
The clock frequency can go up to 240MHz and it has a 512 kB RAM.
This particular board has 30 or 36 pins, 15 in each row.
It also has wide variety of peripherals available, like: capacitive touch, ADCs, DACs, UART, SPI, I2C and much more.
It comes with built-in hall effect sensor and built-in temperature sensor.

Specifications – ESP32 DEVKIT V1 DOIT

Number of cores	2 (dual core)
Wi-Fi	B/G/N 2.4 GHz up to 150 Mbits/s
Bluetooth	BLE (Bluetooth Low Energy) and legacy Bluetooth
Architecture	32 bits
Clock frequency	Up to 240 MHz
RAM	512 KB
Flash	4MB
Pins	30 or 36 (depends on the model)
Peripherals	Capacitive touch, ADC (analog to digital converter), DAC (digital to analog converter), I2C (Inter-Integrated Circuit), UART (universal asynchronous receiver/transmitter), CAN 2.0 (Controller Area Netwokr), SPI (Serial Peripheral Interface), I2S (Integrated Inter-IC Sound), RMII (Reduced Media-Independent Interface), PWM (pulse width modulation), and more.

Pinout