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Power switch on VESCT6+ (MK3)

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henry10210
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Power switch on VESCT6+ (MK3)

Hello, trying out this forum even though I paid the money to Trampa Boards, since the product cover says "Designed by Benjamin".  Please point me to the right place if this inquiry is misdirected.

Just received by VESC6+ from Trampa Boards 2 days ago, and have been looking for more detailed documentation than what I can find on the Trampa Boards website.  Looking for:

  1. The connector information on the SENSE, SWD, COMM, and PPM ports on MK3.  For eample, tried the "standard" servo 3-pin (0.1" I believe) on the PPM port, and it wouldn't fit (close but not quite).  Tried the standard jumper wires (the ones for the 0.1" header) directly on the pins, and they feel a bit loose.
  2. The 4 bolt hole information to mount the MK3 to a heat sink.  Eyeballing it, looks like M5, but would like to know the hole spacing so I can drill out the mounting plate correctly.
  3. A better understanding of the COMM port.  For example, I the "Power swtich" pin is mysterious, because the VESC 6.5 schematic (Dated 2018-02-27; I forget where I downloaded it) shows the pin 8 of the COMM port as ADC_15 (going into PC5 on the STM32F40x), but the hw_60.[ch] in the git cloned source code I am reading does not seem to do anything with it.  Is there some other branch I should check out for the MK3, or perhaps MK3 config is not hw_60.[ch]?

Thanks for reading!

benjamin
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The V6 MK3 is just released, and has a quite flexible power switch now. I will upload the schematic and make a video about how it works soon. Essentially, the MK3 can switch itself off after a configurable time of not driving the motor, and it also supports push to start.

henry10210
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Thank you.  Looking forward to the MK3 schematic.  Will there be a new HW config in the bldc repo for the MK3 as well?  I've been using the STM32F407 datasheet and the reference manual, to match against the VESC6+ schematic.  Is there any reason why the scheatic does not show a specific STM32 chip name?  If I wanted to SWD in using J-Link, for example, I would need to know the part number with more precision than just STM32F40x...

Stupidspencer
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Mounting schematic is available on Trampa's site. But for your convenience, here's a screenshot.

frank
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Jonboy
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First post here.. I must say the controller I received from Trampa this week is a revelation.. Top job!

quick Q ! where is the timer in vesc tool for shut down? on 1.29 BTW

 

Teslafly
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Just saw the new mk3 after seeing it added to the codebase. Your improvements continue to inspire me.

I guess I will probably find out when you post the new schematic/video. But I am quite curious, how did you achieve under 20ua of leakage current using no additional mosfets as it says in Tampa's description? The electrolytic capacitors alone should draw 30+ua if they are the same ones used in earlier revisions of the vesc 6.

In the derivative I am designing I discounted a power switch as the off current savings weren't as low as I would like, at least without adding a fet to disconnect the caps.

adamchicago
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I ditto the questions above...where is any of the instructions on how to use the new features?  I have a two VESC 6 MKIII setup so should there be a power switch for each VESC or can you use just one (obviously one would be preferred)?  Where are the instructions for hibernate mode and roll to power on?  Any recommendations for a good button switch to buy, and ideal placement on an ESK8 board? ...I imagine most of these button switches are not water proof so am thinking installation on top of a Monster Box where water can collect from splashes etc is not a good idea, or am I over thinking this?

I'm really looking forward to using these new features but wish the documentation was released with the upgrade not weeks after.

henry10210
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Still waiting for the MK3 schematic.  Would even settle for the exact STM32 part number, to match up the pin assignments I see in the code.