Configuration and telemetry for VESC [iOS, Android]

@rpasichnyk thanks for the app update! Unfortunately it hasn’t charged anything - still no notification. I do get a red dot on the app icon sometimes - unfortunately no notification to light up locked screen or interrupt other app.

I have another request - would you be able to add option to modify voltage value of 0% of the battery ?

For example so with lipos 0% would be 3.6V? Or 36.00 with 10s -adjustable.

At the moment it must be hard coded and I get to 30% and for me it is the lowest I would go with lipos and everyone discharges them differently :wink:

EDIT

Just restarted board, app was running in the background and I have received battery charged notification as soon as app connected to Bluetooth module after board restart. Weird… and board is long time charged :wink:

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Thanks a bunch man. Fast shipping to Canada too!! :sunglasses:

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I’m sorry if I missed it somewhere. Is it possible to add more battery types? I’m using A123’s with 3.3v nominal and 3.6v max.

Thank you for any consideration.

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I guess you are using ANR26650? I added it to my app, it wasn’t hard. It will be available in the next version :slight_smile:

I used approximate values from the discharge curve in the test linked above:

property var anr26650Curve: [3.6, 3.3, 3.28, 3.26, 3.24, 3.22, 3.2, 3.18, 3.16, 3.1, 2.7]

The first value is at 100% capacity, then 90%, 80%, 70%, … Let me know if the values look wrong.

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Thank you very much :slight_smile: to be honest I’m not sure how to tell if they are right or wrong :confused: I have faith in your approximations. After the next update I will report back.

Hey @rpasichnyk do you have any plans to incorporate the new firmware v3.27 into Metr and Perimetr? I am assuming it will work fine with Metr. Anyone tried it yet?

I have a few metr noob problems :slight_smile: I have read through most of this thread and admit I may have missed some things. Using mac, iPhone 6+ and imovie

  • my realtime data page setup changes when the app restarts or crashes (see below)
  • some of my records crash the app when I click to open them in the phone app
  • when I get a record to upload to chrome there is no map
  • when I try to do the overlay the readout is in the middle of the screen no matter which one I choose.

Thank you for any help

@jmasta yes I am working on it, metr already supports v3.27 firmware, perimetr is in the works. @i2oadsweepei2 thank you for reporting this. Can you export problematic record with iTunes and PM me? Then I can see why it crashes and fix it.

Connect iPhone with USB, open iTunes, find Apps → metr, then find the record by date, select both *.r and *.s file and drag them to Finder.

I’ve been stalking for this thread for a while, maybe it’s almost time for me to buy a module :wink:

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ok I reinstalled the app and now the realtime page keeps the configuration I chose. Fixed the map problem too, but that was my fault. I was asked to allow location service and said yes this time :stuck_out_tongue_winking_eye:. I made a few test runs with the random generator and they all work and upload now. I think reinstalling the app fixed that. I’ll take it for a real trip in a while. As for the overlay, I cheated and thought I could get away with a free mp4 converter. No can do :grimacing: Learning about ffmpeg now.

Thank you Roman for your patience.

You are welcome! If you have any issues let me know :slight_smile:

We still miss the most important feature. Used mAh…

You want to see mAh in the web view? Like this ↑ but mAh?

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Thank you. Everything seems better. Now just chrome won’t auto download the overlay after its compiled. Gonna try and get a run in and see if it works instead of the sample.

Yes, that would be a wet dream. All so on my phone when i check the records, instead of energy… If i could customize that, that would be awesome :slight_smile: I dont use energy to anything, but used mAh is one of the most important features imo.

Watt-hours gives you a much better picture of energy consumption, because it is normalized for voltage. Watt-hours are invariant of battery level. Using amp-hours is not a very good gauge because 1Ah on a full battery yields much more energy than 1Ah on an empty battery. But 1 Watt-hour is always 1 Watt-hour

Personally I would really love to see Watt-hours/mile

Sorry for newbee quistion then.

How do i know how many whatt hours my battery is, when fully charged ? It`s a DIY 10s5p made of Samsung 30Q li-ions

@Silverline I am not sure what was I thinking… how could I not have the most important feature?! Please excuse me, it has been fixed.

@jmasta I agree with you but same Wh can very easy result in different Ah depending on riding style and voltage sag. This is why it is also nice to see Ah. Some batteries have fixed Ah and you can use this information to estimate how much is left.

Regarding Wh/mile, this is definitely something I want too, good idea! :thumbsup:

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Take the nominal voltage of the cell (3.6V) and multiply it by its nominal capacity (3000 mAh = 3 Ah). Each 30Q cell has 10.8 Wh.

50 of those cells gets you 540 Wh

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You times the nominal voltage (3.6v) by the capacity in milliamps (15000) to get 540,000 then divide by 1000. 540 watt hours.

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