Maximum amount of A/D pins

[Fracasmac]

Hi,

I did an art project some time ago that used standard security pressure mats to feed analog on/offs to a PIC16 chip, where some C code converted these to MIDI on messages. This project used 12 pressure mats and I now wish to expand this project to have somewhere nearer 100 mats. The fewer boards and midi channels required the better.

I bought one of those iCubeX kits since they have over 30 inputs but the price of their custom sensors is too high. (I have tried hacking but the pressure mats I am using send out a constant ramping signal when idle that I don't know how to control...)

Can anyone recommend another solution? I contacted Microchip and they tell me that the dsPIC33FJ256GP has up to 32 analog inputs, but I have no experience with this chip.

How many analog ins does the MidiSense have?

Any thoughts or suggestions are much appreciated.
Thank you,

[mtbf0]

How many analog ins does the MidiSense have?

6.

there are adc chips available like the mcp3208 that communicate using the spi interface. you could hang a passle of them off of an arduino. there are articles in the playground about using them.

there are other adc chips and analog multiplexors you could use.

[zener]

[/quote]analog multiplexors[/quote]