The AZ-Delivery NodeMCU LoLin V3 is another classic among ESP developer boards. Equipped with a powerful ESP8266-12F processor from Espressif and integrated WiFi, this controller offers an easy introduction to IoT development. Special features Various firmware versions from the manufacturer are available, which can be easily flashed via the micro USB port. In contrast to the previous model, the CH340 chipset was used to make the application particularly user-friendly. Thanks to the generous memory and power reserve of the ESP processor, this board scores where the performance range of various microcontrollers ends! Technical data Supply voltage (USB) 5V DC Input/output voltage 3.3V DC Clock frequency 80MHz / 160MHz Instruction RAM 32kB Data RAM 96kB External flash memory 4MB GPIO digital pins 17 (configurable as PWM at 3.3V) ADC analog pin 1 (BUT voltage range is: 0 - 1V) UART 2 Breadboard-friendly The NodeMCU board is compatible with the breadboard. It has a plate voltage regulator that allows it to be powered directly from the USB port. 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