after more than a jear since my last entry, i think it is more than about time to give you a quick oerview on what has happened so far..
The most signifficant change in the hardware section is, that i switched to one Arduino Mega instead of two normal Arduinos. Therefore i had to redesign the multiplexer circuitry an all the other periferial elecrtonics. This time i was able to use an LPKF Rapid PCB-prototyper, whitch made it way easyer to realise a small form-factor layout containig all the necessary components.
The new circutry is a stack out of three Boards of wich the lowest is the Arduino Mega. Here you can se the eagle Layout for the other two layers:
This is the topmost Board With six cd 4052 analog mux/demuxers and the conectors for all the FSR-sensors
And here you can see the board in the middle, with connectors for eight thermistors and a triple-axis accelorometer, there is also a cd 4051 demuxer for adressing the thermistors.
This was my first time working on an rapid-PCB-Prototyping machine, so i took me some time to get everything designed the right way (drill-diameters and pad-sizes). But after these things were solved and thanks tho the help of Mr. Laurent Mignonneau (the owner of the prototyper btw.) it worked out pritty fine in the end.
Here you can see the The fully asembled Stack.
so after Programming the firmware, and some simple diagnosis max/msp- patch, everything is working perfectly fine..
