Hi - I get no response from the sensors - I’m trying at the moment with the EV2 touch sensor as that seems like the simplest to get working.
I’m powering the Pi with USB and the BrickPi with a 9V supply with fresh batteries (6 AA’s), both connected simultaneously.
I tried with the fresh install of 2013.07.27_BrickPi.img and also with one that had been apt-get ‘upgrade’ and ‘update’. The original init_uart_clock seemed to be 16000000 and I changed this to 32000000 after reading the ‘Modify your own image’ section, but that didn’t seem to make any difference. That’s the only line I’ve changed in config.txt - the rest seems commented out anyway.
I checked that the serial ports are commented out in inittab (they were) and in cmdline.txt.