This video focuses on the use and working of a rotary encoder and its connection and working with a Wemos D1 Mini .Github repo link : https://github.com/Viru

For fast prototyping, I will create a set of shields for the WeMos D1 mini; the first is a service board with integrated pcf8574 IC, an encoder, and five other pins to use as input or output. Naturally, I start my work from the example I created for my library in this article “ PCF8574 i2c digital I/O expander: Arduino, esp8266 and esp32

Espressif official ESP32-WROOM-32 module. Lastest ESP32 Version: REV1. 4MB FLASH. Lithium battery interface, 500mA Max charging current. Compatible with Arduino, MicroPython. Default firmware: lastest MicroPython.

The DS18B20 is a temperature sensor that can be used in various simple projects. This part uses the 1 wire (I2C) bus and you can connect multiple sensors up to your Arduino. The part is also relatively low cost and only requires an additional 4k7 pull up resistor. In the example below we shall make a basic example that reads the temperature and
daniellewis March 10, 2023, 2:42am 9. I have tried EXACTLY this setup but still get "no PN532 found". PN532 -> D1 mini. GND -> GND. VCC -> 5V. SDA -> D2. SCL -> D1. on the PN532 module I have it set to I2C mode (L R - so 1 is set to low and 2 is set to high) vvilho March 10, 2023, 3:07am 10.
This D1 mini module is a mini WIFI board based on ESP-8266MOD. This board contains 11 digital I/O pins, all pins have interrupt / PWM / I2C with a micro-USB connection for power and data connectivity. This also has one analog pin for analog inputs. WeMos D1 Mini board is 100% compatible with Arduino IDE.
The SAMD21 M0 Mini board will be used as the primary component used here. I will also use LEDs, resistors, and jumper wires to demonstrate some of the capabilities of the SAMD21 chip. For reference, the pinout for the SAMD21 M0 Mini can be found here and the datasheet for the SAMD21 chip can be found here. Below is a list of affiliate or shop In this example we look at another terrific little low cost shield for the Wemos mini, this time its the OLED shield. Lets look at the shield and some specs. Screen Size: 64×48 pixels (0.66” Across) Operating Voltage: 3.3V. Driver IC: SSD1306. Interface: IIC (I2C) IIC Address: 0x3C or 0x3D. The shield uses the I2C pins, so you can still Version ; V4.0.0 (current) ; V3.1.0 ; V3.0.0 ; V2.3.0 ; V2.2.0 ","renderedFileInfo":null,"shortPath":null,"tabSize":8,"topBannersInfo .
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    • wemos d1 mini i2c example