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Unread 04-02-2009, 11:54
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Battery Display on DS

In the rules it states that we have to have the battery connected to the analog break out.
Quote:
Originally Posted by <R64>
A National Instruments 9201 module must be installed in slot 1 of the cRIO Mobile Device
Controller. An analog breakout must be connected to this module. A jumper must be
installed on the “Battery Voltage” and “Power” pins on the analog breakout. The analog
breakout must be powered from the Power Distribution Panel. Please refer to Section 3.4 of
the “FRC Control System Component Data Sheets” for information on these connections.
and then it refers to this

Quote:
Originally Posted by 3.4.2
1) Plug the Analog Breakout module into an NI 9201 analog input module and secure with
screws
2) apply power to J3 from the PD via 5A breaker and smaller WAGOs
3) select whether AI8 is to be connected to the 3x8 header or input power for battery sensing
and apply jumper accordingly
4) attach sensors via 3-pin PWM to the 3x8 header with careful consideration of polarity
Now here is the problem. Is the battery voltage suppose to show up next to "Battery" on the DS? We have done all these steps and it still says 00.00v but then when we read the analog input of AI8 it comes up as 7(ish)v which is about 40% of the 12v(as stated in the Q&A right below).

Spent a good amount of time searching, but didn't find anything that was really relevant to this.
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