This Pro Micro 5V 16M Mini Leonardo Micro-controller Development Board For Arduino development board has 4 channel 10 bit ADC, 5 PWM pins, 12 DIO, and a hardware serial connection Rx and Tx you are familiar with. Running on 16MHz and 5V, this board will remind you a lot of other Arduino compatible boards that you like. There is a voltage regulator on board, so it can accept up to 12V DC.

This is improved Arduino Uno R3 is one of the latest versions of Arduino Uno with an onboard CH340 USB - serial converter chip. ArduinoUNoR3 provides you with a cheaper opportunity to get started with Arduino boards. The microcontroller model of this board is the same as the original one (Atmega328). The only difference between microcontrollers is the package. The original one has a DIP package but the clone one has an SMD package microcontroller. Arduino Uno r3 kit   

Features Of WEMOS D1 Mini Pro: 11 digital input/output pins Interrupt/PWM/I2C/one-wire 1 analog input(3.2V max input) 4M byte Flash External antenna connector Built-in ceramic antenna New CP2104 USB-TO-UART IC Same size as D1 mini, but more light Specification Microcontroller ESP-8266EX Operating Voltage 3.3V Digital I/O Pins 11 Analog Input Pins 1(Max input: 3.2V) Clock Speed 80MHz/160MHz Flash 4M bytes Length 34.2mm Width 25.6mm Weight 2.5g NOTE: All of the IO pins have interrupt/PWM/I2C/one-wire support except D0, All of the IO pins run at 3.3V. Package 1 x D1 Mini Pro V1.1.0 1 x Set of header pins Downloads: Click me For Drivers OF WeMos D1 Mini Pro Package includes: 1x WEMOS D1 Mini Pro module 2x 20-pin headers (customer can cut small piece as needed) 1x Antenna 1x ipx Connector