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 ...
[Wayne] wrote in to share an item he just finished working on, an I 2 C GPS shield for the Arduino. While other GPS solutions have existed for quite some time, his caught our eye due to its feature ...
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