Bastl Sense User manual

Sense can convert and amlif asinal from almost
an te of analo sensor into control voltae and ate
sinals. You can use sensors with variable resistance liht
deendent resistors, bod contacts, water contacts etc. or
sensors that alread outut voltae ulse sensor, accele-
rometer, inductors, iezo etc. amlif them and calibrate
them in the wa to have suitable control voltae and ate
outut sinals.
connectin the sensor

Select whether the signl is voltge (V) or resistnce ()
bsed nd use n pproprite input for the signl.

If you re using very low mplitude voltge (V) signl (such
s n inductor to pick up n electromgnetic field), put
the pre-mp switch into the upper position to increse the
input gin by 50. Note: The pre-mp stge is AC coupled
nd inverting so if you wnt non-inverted signl output use
the “- CV OUT” output.

If you re using ny dedicted (Arduino bsed) nlog
sensor, you cn use the mini pin-heder ptchby to plug
your sensor to the required driving voltge nd connect its
output to the (V) IN voltge input pin on the ptch by.
See the instructions of the specific sensor for more detils.
The (V) IN of the ptch by is normlised to the (V) IN
mono-jck connector.

If you re using resistnce bsed sensor hooked up to
mono-jck cble, this input is simply the two poles of the
resistnce bsed sensor.

Select pullup resistnce similr to the resistnce of your
sensor. The closer the sensor resistnce to the pullup
resistor, the esier it is to clibrte nd gin useful signl.
Just try different settings which work best for you.
controls and oututs

The Gin knob djusts how much gin is pplied
to the input.

The Clipping LEDs show you whether the signl
is mplified too much nd the signl is clipping.

The AC/DC switch selects whether the input is AC or DC
coupled. To simplify it: use AC if you re picking up signls
t udio rte. Use DC coupling for slower signls.

The Offset knob sets the voltge offset pplied to the
signl. When the AC / DC switch is in the DC position the
offset is dded before the gin stge. If the AC/DC switch
is in the AC position the offset is dded fter the gin
stge (see clibrtion).

The CV OUTs output the mplified nd offseted signl.
“CV OUT +” is the non-inverted nd “CV OUT -” is the
inverted version of the signl.

The Threshold knob sets avoltage threshold for
acomparator that outputs gate signals.

The Threshold LEDs indicte Gte signl. They re lso
very useful for clibrtion.

“Gte OUT +” outputs gte when the positive signl
is bove the threshold set by the threshold knob. “Gte
OUT -” outputs gte when the positive signl is below
the threshold.
fatures
 voltge nd resistnce inputs
 pin heder ptchby for connecting Arduino
comptible sensors (5V or 3V)
 resistnce rnge switch
 pre-mp for voltge sensors
 gin knob with clipping indictor
 voltge offset (positive or negtive)
 AC or DC coupling for gin stge
 threshold for gte outputs
 CV output nd inverted CV output
 GATE output nd inverted GATE output
technical details
 5HP
 PTC fuse nd diode protected 10 pin power connector
 50mm deep
 current +12: <35mA, -12: <25 mA (cn be ffected
by the ctul current drw of the sensor used)



+
+
0
analog sensor calibration
CLIP CLIP
DC
Ω
V
AC GAIN
OFFSET
(V) PRE-AMP
(Ω) RANGE
GATE THRESHOLD
(Ω)IN(V)IN
(V)
IN 5
V3 V
CV OUT
GATE OUT
+
+
+
0
G
N
D
(V) (Ω)
SENSE
Sense




ANALOG SENSOR CALIBRATION MODULE



B e f o r e c o n n e c t i n g t h e r i b b o n c a b l e t o t h i s m o d u l e
d i s c o n n e ct our sstem from ower !
Double check the olarit of the ribbon cable and that
it is not shifted in an direction. The red cable should
be attached to the -12V rail, both on the module and
on the bus board side!
lease make sure of the followin
 you hve stndrd pinout eurorck bus bord
 you hve +12 nd -12 power rils on tht bus bord
 the power rils re not overloded
Although we put protection circuits in the device,
we do not tke ny responsibility for dmges
cused by wrong power supply connection.
After you connected everything, double checked
it nd closed your system so no power lines cn be
touched by your hnd, turn on your system nd
test the module.
!
connectin module to our sstem
www.bstl-instruments.com Take it Carefull
gain to 0
ascm v1.1
BASTL-INSTRUMENTS.com
GND
+12
-12

!
P C B
AC calibration
If you are using the AC/DC switch in AC position, the
offset is added after the gain stage. The AC position
means that there is acapacitor in front of the gain stage
which removes the DC offset automatically and lets
your signal float around the ground. When using the AC
method simply put the offset and threshold knobs to their
middle positions and adjust the gain. Use the offset knob
only if you need the signal to be shifted afterwards.
After your signal is calibrated, adjust the threshold knob
to get the gate signals you desire.
Calibration
The point of the clibrtion is to mplify the prt of the
signl tht contins useful informtion.
For exmple, let'ssy you re using the resistnce input
nd most of the interesting signl is floting somewhere
round +3 volts. The im of the clibrtion is to shift
the signl (down) nd mplify the interesting signl
vritions round 3 volts.
DC calibration
The following procedure is vlid for the AD/ DC switch
in the DC position. In this position the voltge offset
is dded before the gin stge which gives you the
possibility to mplify the signl which is lredy ffected
by the offset knob.
a Turn the offset nd threshold knobs to their middle
positions nd the gin knob to the full left position.
b Turn the offset knob to position where the thre-
shold LEDs strt to chnge. This will mke the signl flot
round ground which is wht we wnt, becuse the gin
stge works best with signl floting round ground.
c Turn the gin knob little bit nd re-djust the offset
knob so the signl flots round ground gin. Keep doing
this until your signl is mplified enough.
d If the CLIP LEDs strt to light up it mens you re
mplifying the signl bit too much nd it is being
clipped. In tht cse turn the gin little bit down or
djust the offset in wy tht the clipping doesn't occur.