[smsrobotics] Re: FRC - IMPORTANT Photosensor wiring
- From: "Lehner, Caleb" <CalebLehner@xxxxxxxxxxxxxxxxx>
- To: "smsrobotics@xxxxxxxxxxxxx" <smsrobotics@xxxxxxxxxxxxx>
- Date: Fri, 21 Jan 2011 17:18:30 -0500
Maria take a look at this they're quite a few options to choose i know some of
them only.
http://www.festo.com/pnf/en-us_us/products/catalog?action=search&key=vuvg
Caleb
________________________________________
From: smsrobotics-bounce@xxxxxxxxxxxxx [smsrobotics-bounce@xxxxxxxxxxxxx] On
Behalf Of Maria DeVuono-Homberg [devuonom@xxxxxxxxxxx]
Sent: Thursday, January 20, 2011 8:54 PM
To: smsrobotics@xxxxxxxxxxxxx
Subject: [smsrobotics] FRC - IMPORTANT Photosensor wiring
Jon, Tim,
As I am reading what there is to read about wiring up the photosensors, I would
say that you need to remove the power and ground wire connections on the PWM
wire--the photo sensor is getting 12 V power from the PD board. Important.
Was the sensor wired up to the PD board? (Needs a 20 amp fuse.) Brown to +12V
and blue to ground
http://samplecode.rockwellautomation.com/idc/groups/literature/documents/in/42ef-in003_-en-p.pdf
? (Comments say the wiring diagram is also printed on the back of the sensor
to determine which of the two was power and which ground...)
Confirm LED's lighting. Refer to tech spec for meanings.
Keep in mind what I mentioned today: the digital sidecar digital I/O ports are
pulled up to +5V. That means that the signal you see will be true/high/+5V
unless the signal driven to false/grnd/0V. (The black and white signal wires
should be opposites.)
Please see posts here http://www.chiefdelphi.com/forums/showthread.php?t=88548
, especially Alan Anderson's and Alan Skierkiewicz's (both well-known
advisors), and I'll explain the circuitry issues tomorrow. (Transistors are
like switches, imperfect circuits, leakage current, etc.
Further down there is a discussion of the problem of trying to keep tiny wires
in the PD board. We need to use the terminal block. I'll show you tomorrow.
Maria
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