View source for Making XO sensors/How to connect sensors

'''This details steps to build a low cost probe for connecting sensors to the XO for use in [[Measure]] and other activities that can read sensor input.'''

In general, you wire the sensor to a 3.5mm audio jack, and also to a USB connector if it requires voltage.

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[[Image:Measure_tut_1_1.jpg|thumb|center|210px|It'd be good to have these tools - A soldering iron, some soldering wire, a wire cutter/wire stripper and some insulating tape]]
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[[Image:Measure_tut_1_2.jpg|thumb|center|255px|Wire stripper]]
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[[Image:Measure_tut_1_3.jpg|thumb|center|250px|Soldering wire]]
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[[Image:Measure_tut_1_5.jpg|thumb|center|263px|Some connecting wires]]
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[[Image:Measure_tut_1_4.jpg|thumb|center|250px|3.5mm audio jack (stereo or mono, any would do)]]
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[[Image:Measure_tut_1_6.jpg|thumb|center|246px|A USB cable, or even a USB connector would do]]
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[[Image:Measure_tut_1_9.jpg|thumb|center|260px|The audio jack/connector]]
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[[Image:Measure_tut_1_10.jpg|thumb|center|250px|Cut two pieces of wire and strip them at the ends]]
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[[Image:Measure_tut_1_11.jpg|thumb|center|180px|Solder the wires to the connector as shown. Do make sure to have an identification mark (eg. a knot) to differentiate between both the wires.Call the wire connected to the central terminal as "Vin" the wire connected to the outer terminal as "Gnd"]]
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[[Image:Measure_tut_1_13.jpg|thumb|center|250px|Take the USB cable/connector]]
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[[Image:Measure_tut_1_14.jpg|thumb|center|250px|Cut it in the middle and strip the wires]]
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[[Image:Measure_tut_1_15.jpg|thumb|center|180px|We only need the red and the black wires.The USB port provides us with a source of +5V supply. Let's call the red wire as "+ve" and the black as "Gnd" and make the black one and the "Gnd" defined in audio connector as one, by connecting them together.]]
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[[Image:Measure_tut_1_24.jpg|thumb|center|250px|The audio connector goes into the pink MIC input jack]]
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[[Image:Measure_tut_1_27.jpg|thumb|center|250px|The USB connector goes into the USB port]]
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'''To summarize, do remember that we have identified three terminals
# The "Vin" terminal
# The "+ve" terminal
# The "Gnd" terminal (the Gnd of audio connector is connected to Gnd of USB connector"
'''
== Other sensor instructions ==
Other pages describe how to build specific kinds of sensors.

{{Special:PrefixIndex/Making_XO_sensors/}}

[[Category:XO sensors]]