I got the Cerbot last cyber Monday and I want to do the balancing demo, however, both the gyro (http://www.seeedstudio.com/depot/gyro-module-net-gadgeteer-compatible-p-972.html) and the accelerometer (http://www.seeedstudio.com/depot/accelerometer-module-net-gadgeteer-compatible-p-968.html) are discontinued.
Are replacement modules for these? Or is there a secondary (used, pre-owned, whatever) market where I could buy these?