Optically isolated parallel port I2C adapter

parport i2c

I2C is a simple communications bus similar to 1-wire, which we’ve talked about earlier. [hnch] has built a really simple I2C parallel port interface. It’s optically isolated so you don’t have to worry about a mistake frying your computer. I2C modules already come with the Linux kernel. It will even treat temperature sensors you attach exactly like the … Read the rest