In he following example, we want to control a LED, that is connected with a button and a pull-down resistor. The objective of the sketch is that the LED is off, when the button is not pressed and the LED is on as long as the button is pressed. Wiring Pull Down Resistor LED ESP8266 WeMos D1 Mini. After the wiring, we can dive into the Step 4: Arduino Sketch for MicroSD Card Logger. * "Wifi D1 Mini" or "Wemos D1 Mini" MicroSD card logger and real time clock. * NOTE: Despite the name, this card does not support Wifi. It appears there's a card of the * same name that also has an ESP-8266EX, and that one supports Wifi. The Wemos OLED shield uses a 64×48 pixel monochrome OLED display that connects to the Wemos D1 Mini via pins D1 and D2, which double up as the I2C serial data and clock. It makes use of the Adafruit SSD1306 library for Arduino, so it is very easy to program. LOLIN D1 mini — WEMOS documentation Docs » D1 Boards » LOLIN D1 mini Edit on GitHub LOLIN D1 mini ¶ A mini wifi board with 4MB flash based on ESP-8266EX. [Buy it] Features ¶ 11 digital IO, interrupt/pwm/I2C/one-wire supported (except D0) 1 analog input (3.2V max input) Type-C USB Port LOLIN I2C Port Compatible with MicroPython, Arduino, nodemcu WeMOS D1 Mini Board ; SG90 Servo Motor ; Jumper Cables ; SG90 Servo Motor. A servo motor is a type of motor that can rotate very accurately. In fact, pwm is a square signal that can be 1 or 5 volts at a time, or 0, which means 0 volts. For example, if the Duty Cycle of a PWM wave is equal to 80%, that is, in each cycle 80% of the voltage is gRZt.

wemos d1 mini examples