In a previous post, I talked about the MCP23017 and MCP23018, and why the MCP23017 was a better device for my use in this case (this case being my Remote control K9). The MCP23017 can only output a digital high of the same voltage as VDD, which is capped at […]
I2C
3 posts
In my previous post, I talked about some of the advantages of the MCP23018, and how it was easier to address… Well, it turns out that I made the standard mistake of not reading the datasheet… It’s not as though the MCP23018 obscures the lack of current source deep in […]
The MCP23017 is a popular I2C 16bit IO module, it can be used to allow you to have more GPIOs available, There is also the MCP23018 available, which does fundamentally the same as the MCP23017, but with a few differences: On an I2C bus, each device has a unique address, […]