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Unread 22-09-2016, 15:48
rsync rsync is offline
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Talon SRX Breakout Board with Hall Effect Encoders

We're trying to use the Talon SRX breakout board (http://www.andymark.com/product-p/am-3281.htm) with the Talon SRX controllers and the PG71 motor. The motor comes with hall effect encoder (am-2816a) attached to the back. We connected encoder pins on the breakout board to the encoder, but are unable to read any encoder values. When printing the values in SmartDashboard, they always stay 0. We're not sure if it's a wiring issue or programming issue.

Here's some pictures for how we're connecting:
https://goo.gl/photos/6gmekW3FFhZBhXi56 (pins on breakout board)
https://goo.gl/photos/XQJWmhJqSngsGHaw5 (encoder)

Wiring question:
The breakout board has 5 pins for encoder (Ch B, V+, Ch A, IDX, V-), whereas the encoder has 4 pins (Ch B, Ch A, VCC, GND). How should those be connected?
http://files.andymark.com/Images/am-..._InfoSheet.jpg

Programming question:
We wrote a simple program with 2 CANTalon objects, and one motor following the other. We didn't yet set the PID values, hoping to just test with the encoder values. But we were not getting any values from the encoder. The code is here: https://github.com/FRC4913/Chell/blo...robot/Arm.java

(x-posted to electrical)
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Unread 22-09-2016, 23:10
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Re: Talon SRX Breakout Board with Hall Effect Encoders

Quote:
Originally Posted by rsync View Post
Wiring question:
The breakout board has 5 pins for encoder (Ch B, V+, Ch A, IDX, V-), whereas the encoder has 4 pins (Ch B, Ch A, VCC, GND). How should those be connected?
http://files.andymark.com/Images/am-..._InfoSheet.jpg
ChA -> ChA
ChB -> ChB
V+ -> VCC
V- -> GND
Leave the IDX (index) pin unconnected.
Is the motor the NeveRest motor from Andy Mark? If so, their pin out is:
http://files.andymark.com/LayoutPrin...+40+REV1-1.PDF
And the breakout board pin out is:
http://mach-engineering.com/products...uide_R1512.pdf
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Last edited by mikets : 22-09-2016 at 23:21.
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Unread 22-09-2016, 23:33
rsync rsync is offline
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Re: Talon SRX Breakout Board with Hall Effect Encoders

Thank you, that worked.
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