Look for a random I2C chip that has not been upstreamed yet (a sensor of some kind). You can then hook it up into a Raspberry Pi style board and use a similar d

Look for a random I2C chip that has not been upstreamed yet (a sensor of some kind). You can then hook it up into a Raspberry Pi style board and use a similar device as the starting point for your new driver. It can be hard if you're not knowledgeable, but not a "several years of experience needed" thing.