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Input Voltage on PPM (Servo) VESC6?

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Marc Pflugmann
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VESC Original
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Input Voltage on PPM (Servo) VESC6?

Is there a document available where all the HW input and output parameters are described?

Mainly I need the max input voltage on PPM (Servo) for VESC6.

BR

Marc

Roger Wolff
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For such things you should simply download the schematic, check which pin that is, and then look up the pin in the datasheet of the STM32F405/407. 

 

I did that for you. The PPM pin is PB6, and it is marked in the datasheet as "FT": Five Volt Tolerant. And in table 14 it says the max voltage on FT pins is 5.5V. So... there you have it.... 

Marc Pflugmann
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Basically that's what I did already but thanks anyway.

Did you read note (6) "To sustain a voltage higher than VDD+0.3, the internal pull-up and pull-down resistors must be disabled"?

My HW is 6.41, schematic states 6.4. Servo (PB6) is marked as output.

BR

Marc

Roger Wolff
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There is a servo connector. This can be configured to be input or output from the VESC. If the pullup and pulldown need to be disabled, you should check the firmware source.