Approximate size: 132mm X 37mm x 13mm
5.25" x 1.5" x 0.5"
Approx weight: 4 ounces = 120gm
Input voltage: 10 - 12 volts DC
Input current: about 50ma per board in daisy chain.
There are four 20 pin ribbon cables which connect to the board
which carry the signals from the FSRs. Each ribbon cable
supports 8 FSRs as follows:
Cable 0: FSRs 0 - 7
Cable 1: FSRs 8 - 15
Cable 2: FSRs 16 - 23
Cable 3: FSRs 24 - 31
Channel pins
FSR 0 1,2
FSR 1 3,4
FSR 2 5,6
FSR 3 7,8
FSR 4 9,10
FSR 5 11,12
FSR 6 13,14
FSR 7 15,16
pins 17,19 ground
pins 18,20 5V DC
Daisy chain provision: Each board has four pairs of jumpers at
one corner. You will jumper one pair on each board which will
be the "board number" (0 - 3). You can then chain together up
to 4 Touch Sensor Boards giving an overall capability of
sampling 128 FSRs as follows:
Board 0 = FSRs 0 - 31
Board 1 = FSRs 32 - 63
Board 2 = FSRs 64 - 95
Board 3 = FSRs 96 - 127
Output from the board: Output is through a 26 pin ribbon cable
to a single 25 pin parallel port on your computer. We of course
provide the connecting cable. But, it is very simple and you
could build one yourself if you wish. The pinout is:
Ribbon cable Parallel Port cable
pins 1 - 24 pins 1 - 24
pin 25 ground pin 25 not connected
pin 26 +12 V DC
The output voltage (10 - 12 VDC) from the power transformer is
fed into pins 25 & 26 of the 26 pin ribbon cable.
General Information: crwillis@androidworld.com |
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