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Topic-icon MDC2230 V3.2 Analog inputs

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4 years 5 months ago #29530862 by JHurkens
When i activate AIn1 or AIn2 they read a value of about 2500 without anything connected to them. When i connect them to ground they read about 1350. It doesn't matter if they are set to Absolute or Relative.

AIn3 and AIn4 do read the actual voltage.

I tested 5 MDC2230 V3.2 they all do the same.
I never had this problem with te V2.1

What might go wrong here?

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  • roboteq
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4 years 5 months ago #29530864 by roboteq
Replied by roboteq on topic MDC2230 V3.2 Analog inputs
You must go in the Pulse 1 and Pulse 2 configuration, and disable pulse capture.

On the new MDC2xxx, when pulse capture is enabled, a weak pull up is added to the input in order to make pulse capture work more reliably with RC radios with 3V pulse signal.

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4 years 5 months ago #29530865 by JHurkens
Replied by JHurkens on topic MDC2230 V3.2 Analog inputs
That solves it for AIn2.

AIn1 now fluctuates between 50 and 100 and doesn't seem to react to any input.

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4 years 5 months ago #29530868 by TechSupport
I've attached the latest datasheet for the MDC2xxx 3.2 pcb.
Attachments:

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4 years 5 months ago #29530873 by JHurkens
Replied by JHurkens on topic MDC2230 V3.2 Analog inputs
The Roborun+ only shows AIn1 to AIn4 where AIn4 reacts to pin 11(ANA5). I switched on AIn5 with the console, witch reacts on pin 10(ANA4). Is there a new version of the software where i can configure AIn5 through the configuration tab?

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4 years 5 months ago #29530878 by TechSupport
You can query this via serial. To make changes to the inputs, you'll need to do this via serial commands. Refer to user manual for reference.

?ai

This is a new addition to the MDC2xxx lineup since the pcb uses a different MCU so the tree files have not been made reflect the new change just yet.

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