Wemos Mini and a PCF8574
The PCF8574 is an 8 bits I/O port expander that uses the I2C protocol. Using this IC, you can use only the SDA and...
Wemos Mini and ISL29125 RGB color light sensor
On this page we take a look at the ISL29125 RED, GREEN and BLUE color light sensor
The ISL29125 is a low power, high sensitivity, RED, GREEN...
PCF8575 I/O expander and ESP8266 examples
This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 5.5-V VCC operation.
The PCF8575 device provides general-purpose remote I/O...
OPT3001 Digital Ambient Light Sensor and ESP8266 example
In this example we will connect an OPT3001 to a Wemos, this sensor measures light intensity - so you can easily create a lux...
Some Neopixel examples
This example takes the Wemos Mini Ws2812B example a bit further on and use an 8 LED Neopixel strip
Here is an image of the strip we...
IR Line tracking sensor example
This is another example using a sensor from the 37 sensor kit, this time we use the one called the KY-033 Hunt sensor module,...
PAJ7620 gesture sensor and ESP8266
The PAJ7620 integrates gesture recognition function with general I2C interface into a single chip forming an image analytic sensor system. It can recognize 9...
Wemos Mini and HDC2080 humidity and temperature sensor example
In this article we look at yet another humidity and temperature sensor from TI - this time its the HDC2080 which we will connect...
Wemos 1.44“ inch TFT LCD shield examples
In this example we look at the 1.44“ inch TFT LCD shield from Wemos. It can display 128×128 resolution and 18-bit color
The TFT is...
Wemos and 4067 example
The 4067 was one of the IC's that I wanted to connect up to various microcontrollers as it looked extremely useful, here is a quick...
ESP8266 and BMA250 acceleration sensor example
The BMA250E is an advanced, ultra-small, triaxial, low-g acceleration sensor with digital interfaces, aiming for low-power consumer electronics applications. Featuring 10 bit digital resolution,...
ESP8266 and DS18b20 sensor readings displayed on a web server
In this example we will connect a Wemos compatible DS18B20 shield to a Wemos Mini and display a page on a web server. This...
Wemos OLED shield example
In this example we look at another terrific little low cost shield for the Wemos mini, this time its the OLED shield. Lets look...
ESP8266 and Stepper motor example
In this example we will show a basic stepper motor example, we use a driver board that can be bought on many sites which...
Wemos and DS3231 RTC example
The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.
The device incorporates a battery...
CCS811 digital gas sensor and ESP8266 example
CCS811 is a low-power digital gas sensor solution, which integrates a gas sensor solution for detecting low levels of VOCs typically found indoors, with...