It’s always more interesting to view results on an LCD rather than the serial monitor where you need the computer switched on. We are using the HM2004A LCD. It can be used in analogue mode, thereby requiring more wires and therefore more I/O ports, or in this example, an I2C Module can be soldered on […]
I2C
Dallas I2C Thermometer
The digital thermometer of choice is the Dallas DS18B20. It looks like a transistor with three legs, but is a 1-wire device, which means that multiple units can be linked on one data bus wire and connected to the Arduino. This data bus is called the I2C. If we are using one Dallas DS18B20, we […]
PCF8574 I2C Port Expander | PCF8574AN | Texas Instruments
PCF8574 I2C Port Expander | PCF8574AN | Texas Instruments.