DAVEga: Battery monitor, odometer, speedometer

ESK8 Electronics
1448

Yes, the the Dave and the feather both use the same baudrate so it works. Here’s a screen grab from Sofu’s build. image image

1449

I’m currently using a feather remote and a Dave. Works perfect.

1450

Thanks. I was hoping no firmware changes were needed. This message is from Feb 1st and I wonder if there are updates to the Unity firmware since then (I see constant development here https://github.com/EnertionBoards/bldc).

1451

I can’t speak on the most recent firmware but I haven’t had any issues with the one linked by sofu.

1452

This would be a question for @Deodand

1453

Is the 5 pin jst-xh connector 2.54mm pitch? I’m making a cable for the DaVega.

1454

Which connector? JST-XH is indeed 2.54mm pitch.

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1455

Sweet. Thanks. I’m making an “advanced cable” based on your post here. Easier to update the unit without opening the DaVega enclosure.

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1456

image

It’s not like you didn’t literally write it in the instructions :sweat_smile:

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1457

20190502_165443

Most excellent!

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1458

Two birds with one stone. Testing the Cheap FOCer with Flipsky DAVEga. :smile:

DSC02168

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1459

Inquiring about these:

  • Is it normal to see zero speed as soon as you let go of the throttle? I would think it would gradually count down the speed.

  • Is it frowned upon when you try to reconfigure the unit while its connected to vesc? Meaning JST is plugged in the UART port and you connect the USB dongle to your laptop to change the settings. Power is off on the board of course.

I tried the latter and it gave me DRV fault error. I got scared and unplugged the USB. Turned on my board and it still works. No fault codes.

1460

Definitely not. I bet you’re looking at the motor amps or battery amps rather than on the speed. Those do drop to 0 as soon as you let go of the throttle.

I haven’t tried that myself but I imagine it can be problematic since the ATMEGA-328 PU only has one UART port that’s used for both programming and connecting to VESC. So if you connect the USB-UART adapter to the Dave while it’s connected to the VESC you’re effectively connecting it to both Dave and VESC. The fact that the VESC is powered off may not be relevant. The UART adapter has 5V to power the target device and so it probably actually powers on the VESC MCU. IMO you don’t want to do this.

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1461

@janpom

Just stopping by to give you a massive thank you for making this. It’s pretty bad ass!

Attach177950_20190512_104009

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1462

I had a dull moment this afternoon so I assembled one kit and got it recorded. After reviewing the video I feel like I probably won’t make a career as a youtuber. :laughing: I hope it still helps someone.

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1463

Thanks for this video. Just assembled one by copying the video.

After assembling and turning it on via USB the 3 buttons didn’t do anything went pressed. Is that normal?

1464

Is it connected to your Vesc?

1465

No, just connected via USB.

1466

I believe there is a post here stating that it needs to be connected to Vesc. When I was setting up mine, nothing happened also when I pressed the buttons. As soon as I connected them, they worked.

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1467

Thanks for the info.

How did your @lrdesigns’s mount? Did you also use double sided tape? I just printed mine but realized this is for surfrodz and I’m using TB trucks or Caliber IIs… I guess it’s time to learn a bit of 3d modeling and remix it.

It printed with no issue on PETG image

1 Like