DAVEGA X: Gauging interest

Saturn_Corp · September 16, 2019, 4:11pm

I can’t wait!

Wonder if I made the right choice with raw instead of black, won’t know until I install it. Either way it will look good though and be nice to have easy to see telemetry.

drone001 · September 16, 2019, 4:14pm

i said the same thing about the black…when i saw the raw…lol

janpom · September 16, 2019, 4:23pm

Both look great. The black is more finished. The raw has some minor scratches from machining but it looks as solid metal at first sight, which it is. I’m also still deciding which one I like better. You won’t make a mistake with either.

Saturn_Corp · September 16, 2019, 4:51pm

Scratches give it character

mmaner · September 16, 2019, 4:51pm

If it ain’t scratched now, come back in 5 minutes

LR-designs · September 17, 2019, 3:29am

In this case I’m not sure I would recommend what I did but I think its workable. I used both epoxy and then silicone.

Normally I would prefer a spray on silicone conformal coating but that would not work for the davega without some very careful masking of the screen and plugs. Too hard basket for me.

There are a couple of things that make conformal coating the davega trickier than your average PCB. The LCD and the gap between the two boards.

I used epoxy to seal around the edges of the LCD screen and the easy to get to contacts on the bottom. A brush on coating would be better for this as the epoxy tends to go on too thickly. I had to go back and scrape off some around the screw mounts so the davega would fit in the housing.

I couldn’t get epoxy into the gap between the two boards so I filled the gap with silicone. I had some on the bench so I thought why not.

The only areas that are not fully sealed now are the USB plug and the button and data plugs.

I did try to unsolder the LCD header to separate the two boards at first. But failed. I wouldn’t try unless you have the right equipment to do that.

Ace · September 17, 2019, 3:52pm

I feel like I read somewhere that the silicone fumes while drying can damage electronics. Is this true?

rusins · September 17, 2019, 7:10pm

I read on the old forum that gluing battery cells with silicon could damage their shell, but in practice silicon seems so neutral and harmless I think people might have just mixed it up with something else.

Mainflow · September 18, 2019, 9:28pm

What about a version with can bus, if telemetry goes over that in the future? It means less cables though.

janpom · September 18, 2019, 9:53pm

Yeah, it’s still 4 wires. It has other advantages though. DAVEGA could remain on even when VESC is off and read/show data from a smart BMS (DieBieMS) while charging.