So, you will have to enter a value between. In case of ESP8266, the PWM in ESP8266 uses a 10-bit resolution. In case of Arduino, the resolution is 8-bit, so you would have to enter a value between 0 and 255. In place of Pin Number, enter the number of the Pin through which you want use the PWM Output.Ĭoming to the PWM Value, here you need to enter a value based on the resolution of the PWM. Since we are using the Arduino IDE to program the ESP8266, the function responsible for producing PWM Signal is analogWrite (the same function which we have used in Arduino as well).ĪnalogWrite function takes in two parameters: Pin number and PWM Value. The software implementation of the PWM generation in ESP8266 is very similar to that in Arduino. The frequency of the PWM signal can be anywhere between 1Hz to 1KHz (some say, the minimum frequency is 100Hz!). PWM in ESP8266 WiFi Module can be implemented with the help of Timer Interrupts. using Timers of the microcontroller, to be exact. The answer for this is very simple: using Software Programming i.e. Then how can we implement PWM in ESP8266? If you observe, all these four pins are not available in our ESP8266 ESP-01 WiFi Module. The pins corresponding to PWM in ESP8266EX are as follows: the SoC that is the heart of all the ESP8266 Modules (like ESP-01, NodeMCU, etc.) consists of four dedicated PWM output interfaces. Now in this ESP8266 PWM Tutorial, I will control the brightness of an LED connected to the GPIO2 Pin of the ESP8266 WiFi Module i.e. Using the PWM technique, we have controlled the intensity of an LED (increased or decreased its brightness), changed the speed of a DC Motor (increase or decrease the speed) and also rotated a Servo Motor. We have seen several PWM tutorials using a variety of microcontrollers (or IC’s) like 8051, Arduino, Raspberry Pi and IC 555. Circuit Diagram of ESP8266 PWM Tutorial for LED Fading.
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