==== Analogue interface to the CEED ====

see > [[Cerf Notes]]

this is the prototype board... 

{{DSCF0004.JPG}}

the black arrow points to the input that i have modified. the wire link joins inputs 8 and 9. the stretch sensor should be across inputs 7 and 8. I have tried to set the values of the pots to be about right - BUT so many things could be wonky. Instructions for oscilloscope tuning can follow if you have such a thing on hand......

the cable attached to the A side of the board is then attached to a CERF and the standard cerf input capturing software is started (see the [[Cerf Notes]] page, I think).

this is a circuit diagram...

{{DSCF0006.JPG}}

when its running, the output looks something like this

{{stretch-test.jpg}}