ESP8266 and Si7021 temperature sensor example

The  Si7021  I2C Humidity  and  Temperature  Sensor  is  a  monolithic  CMOS  IC integrating   humidity   and   temperature   sensor   elements,  ...

Wemos and PCF8563 RTC example

The PCF8563 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption. A programmable clock output, interrupt output, and voltage-low detector...

ESP8266 and PIR example in Micropython

In this example we look at a PIR example in Micropython for an ESP8266. Once again we use uPyCraft and again we use Wemos...

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...

DHT11 sensor data to Thingspeak using a Wemos D1

In this example we will connect a DHT11 sensor to our Wemos D1, we will then send the temperature and humidity values to thingspeak. DHT11...

Wemos HMC5883L example

The Honeywell HMC5883L is a surface-mount, multi-chip module designed for low-field magnetic sensing with a digital interface for applications such as lowcost compassing and...

TM1637 7 segment display example

A common display module that you can buy on the internet contain the Tm1638 driver chip, I was interested in this one which is the...

ESP8266 and L9110 fan module example

In this example we connect an ESp8266  to a dual L9110 fan module. This is a commonly found, basic low cost module which consists...

A look at SHA-1 and ESP8266

Description In cryptography, SHA-1 (Secure Hash Algorithm 1) is a cryptographic hash function which takes an input and produces a 160-bit (20-byte) hash value known...

Wemos and TMP36 example

The TMP35, TMP36, and TMP37 are low voltage, precision centigrade temperature sensors. They provide a voltage output that is linearly proportional to the Celsius...

Wemos Mini and LPS25H piezoresistive pressure sensor example

In this article we look at a pressure sensor - this time its the LPS25H and we will connect it to a Wemos Mini The...
esp8266 and bmm150

ESP8266 and BMM150 digital geomagnetic sensor example

In this article we look at a digital geomagnetic sensor - this time its the BMM150 and as usual we will connect this to...

Using a 74HC595 shift register with the Wemos

Sometimes in your projects you simply do not have enough I/O lines available, take for example a lot of the multiple LED examples, these...

MCP4725 Digital-to-Analog Converter example

MCP4725 is a single channel, 12-bit, voltage output Digital-to-Analog Converter with integrated EEPROM and an I2C Compatible Serial Interface. Again the easiest way to interface...

Wemos and MAX44009 ambient light sensor example

The MAX44009 ambient light sensor features an I²C digital output that is ideal for a number of portable applications such as smartphones, notebooks, and...

Wemos Mini ADXL345 example

The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16g. Digital output data is formatted...