GrovePi is soo funny!
But now, since I’ve been playing with lot of Grove modules, all the connectors on my GrovePi+ are filled up!
Is there any chance to hook up more modules?
I know that I can use up to 9 I2C modules using I2C hubs (see http://www.seeedstudio.com/wiki/Grove_-_I2C_Hub): since there are 3 I2C ports on the GrovePi+ I can use 3 I2C hubs and connect 3 I2C Grove modules to each one.
But what about analog or digital ports?
I also know that I can use and I2C-ADC Grove module (see http://www.seeedstudio.com/wiki/Grove_-_I2C_ADC) to hook up an analog Grove module to an I2C port, but doing this may get expensive.
Is there any other chance to have more Grove modules connected to my RaspberryPi? Maybe staking two GrovePi+? Other ideas?