The USB, HDMI, and eSATA ports in our smartphones, tablets, automotive infotainment devices, and other gadgets make them easy to connect to other devices. However, these high-speed interfaces are ...
A while ago I received a couple of I/O port expander modules that use the I 2 C protocol. Using that Chinese module, you can use only the SDA and SCL pins of your Arduino, or any microcontroller ...