Cheap FOCer 2 (Open-source, Low-cost, VESC 6 based ESC) (v0.9 Release. Beta testing ongoing)

Yep. And even all the stuff needed to order from JLCPCB and LCSC is done. Lately I’ve just been working on material that guides you through the ordering process. I’ve got all of this uploaded on a private GitHub repo and I’m having a few people review it before I release it

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MVP :+1:

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oh stop… :blush:

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Ultra instinct Shaman :fire::fire::fire:

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Just a teaser showing that I’m not BSing

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I’ve been giving some though to securing the transistors to the heatsink.

I wonder if a 3d printed clip would work well or if nylon bolts would be a good option if pressure alone doesn’t work.

Edit: Looking back this is not an issue at all as they are sandwiched between the board and heatsink. Disreagard.

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Yeah the whole idea is that the PCB itself is used to compress the MOSFETs to the heatsink. You get the same benefit of spring clips.

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For some reason I had it in my head that that was not the case. Spent way to much time thinking about a way of pressing them against the heatsink.

And then I went back and looked at the assembled pictures.

I’ll just wait till I have one of these in my hands before I start thinking about making accessories for it. A 3d printed enclosure should be easy enough.

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I’m working on a document that explains assembly including hardware assembly with the heatsink. That document should help people understand how exactly the mosfets are getting compressed to the heat sink

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You need to recommend adding drops of thermal compound or thermal stickers in between, to enhance the cooling :snowflake:

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image

yeah that’s part of the assembly bro

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Nani?! He’s invincibru!

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Integrated On/off switch? Stop teasing lol. JLC is going to be backlogged the day you open up the repo on GitHub.

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Whose gonna organize the first group buy? It would be smart to do a bulk order so we can save on the JLC pic n place costs. I would volunteer myself to organize but I don’t have experience with GBs.

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DO IT!
I’ll hold your beer!
maybe find some one with experience and have them PM, or open a thread for advice…

I’d do it, but I’m a lazy fukk!

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I’m ok with helping those trying to do a group buy. All I’m offering though is consultation and advice for manufacturing the controller.

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The on/off switch isn’t anything too fancy. It’s just meant for a mechanical toggle switch. All it does is shut down the 5V power supply that the DRV provides. This then shuts down everything downstream.

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@shaman how low is the current consumption when the switch for the 5v supply is off?

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out of curiosity, have you run 4.x/5 with an nrf module?

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I don’t have access to the equipment measure this accurately right now but the DRV only draws 50uA when on standby. The voltage divider for sensing Vbatt will still consume about 1.2mA which will be the majority in this case. So I would say 1.5mA to be safe.

1.5mA isn’t the best standby current when powered down but it’s definitely better than when it’s powered on

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