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[gte718p]

The perfect place to ask a question or post an issue

[DanielIndictor]

Hello!

I'm having trouble understanding the design of the Helios Board. Could you please upload the schematics for the chase car and solar car modules so I can learn how they're connected? I don't understand how you isolated the main battery from the auxiliary battery system and maintained separate "grounds" (one for a 96V battery and another for a 12V battery) while also using a simple ADC like you have.

Thank you,
Daniel Indictor

[gte718p]

Hi Daniel,

With the Helios boards it is not possible to issolate the grounds between the high and low side. They have to be tied together. This is an allowed exception to the rules. At scrutineering you would be ask to remove one of the grounds to prove that it is the only connection between the two.

The two boards are actually the exact same. However the chase vehicle board is not populated with a bunch of the components that are not needed in the chase vehicle. The programming accounts for the difference.

[DanielIndictor]

Thank you so much for the quick response!

So just to make sure, should we just connect the grounds with a resistor (like 10k?) at that one point? Also, do you have any suggestions for reducing noise?
And is it possible to get access to the schematics so I can understand how it works?

Thank you!

[gte718p]

It is best to tie them together at the - input. No resisters necessary. I would use a very small wire and a very small fuse as there should never be any current in the wire.