[chbot] PCB Power Supply.

[Charles Manning]

A couple of points...

On Wed, Nov 6, 2024 at 8:42 AM Daniel Powell <danielvieway at hotmail.com>
wrote:

> To preface, I know nothing about PCB design, nor much of anything about
> components.
>
> I thought of using an off the shelf board for datalogging my race car.
> I've picked up a Kincony KC868-16 with the hopes of being able to float off
> the RS485 transceiver and replace it with a Canbus transceiver (Yeah, I'm
> going to screw this board!!)
>

Are you sure that is what you want to do?

RS485 is generally used with a UART and is used as a way to send serial
data (ie. essentially RS232 with different voltages and multi-drop
capability).

A CAN transceiver is generally used with a CAN controller to send CAN fames.

If you remove RS485 from a UART and then replace it with a CAN transceiver
that won't change the UART into a CAN controller.

I don't know this board - maybe the pins are shared and this will be OK.


> My issue. While I know the board is 12v tolerant and the xl1509 should
> handle the voltages seen in car (12-15v) I don't know if the remainder of
> the components will do so. Anyone with more firing neurons than me able to
> look at the diagram/pic below and tell me how quickly I'm going to release
> the smoke?
>

I think the power supply is only part of the question. What can come in via
other connections.

Vehicles are particularly nasty places for electronics.



>
>
> https://www.kincony.com/images/user-guide/manual/KC868-A16-images/ch00-power.png
>
>
>
> https://www.kincony.com/images/user-guide/manual/KC868-A16-images/sh-00-power.jpg
>
>
> Regards,
> Daniel.
>
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