Arduino Uno R3 SMD Micro USB in Pakistan has 14 digital input/output pins (6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a Micro USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller
NodeMCU is famous for the ESP8266E module with LUA programming language. Now this is more powerful NodeMCU with ESP32 on it.ESP32 is the big brother of ESP8266. It comes with dual core 32-bit processor, built-in WiFi and Bluetooth, more RAM and Flash memory, more GPIO, more ADC, and many other peripherals :)
The STM32F4DISCOVERY kit leverages the capabilities of the STM32F407 high performance microcontrollers, to allow users to easily develop applications featuring audio.It includes an ST-LINK embedded debug tool, one ST-MEMS digital accelerometer, a digital microphone, one audio DAC with integrated class D speaker driver, LEDs, push-buttons and an USB OTG micro-AB connector.