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<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">Cheers Charles,
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">It’s ESP32 WRoom with onboard CAN. The MAX13487EESA is package compatible with a TI SN65HVD230 Can Transceiver. I’ve got to do more research, but I believe it may not be pin compatible.
None the less the ESP32 has three serial interfaces, if I can’t use the one presented to the RS465 chip I can simply construct a board for the transceiver and run it off the ESP32 pins allocated to the 433mhz subboard.
<br>
<br>
The remainder of the inputs opto isolated, the outputs also opto isolated MOSFET. Given it’s a cheap board, it’s one of the reasons I selected it. None the less at the moment my suspension position sensors and tyre temp sensors are battery driven and use ESPNow
to transmit data. <br>
<br>
As above I don’t think CAN is much of an issue. Just don’t know if I’m going to release smoke using car voltage rather than a regulated 12v.<br>
<br>
Regards, Daniel. <o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Chchrobotics <chchrobotics-bounces@lists.ourshack.com>
<b>On Behalf Of </b>Charles Manning<br>
<b>Sent:</b> Wednesday, 6 November 2024 12:13 pm<br>
<b>To:</b> Christchurch Robotics <chchrobotics@lists.ourshack.com><br>
<b>Subject:</b> Re: [chbot] PCB Power Supply.<o:p></o:p></span></p>
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<p class="MsoNormal">A couple of points...<o:p></o:p></p>
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<p class="MsoNormal">On Wed, Nov 6, 2024 at 8:42<span style="font-family:"Arial",sans-serif"> </span>AM Daniel Powell <<a href="mailto:danielvieway@hotmail.com">danielvieway@hotmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">To preface, I know nothing about PCB design, nor much of anything about components.
<br>
<br>
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!!)<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Are you sure that is what you want to do?<o:p></o:p></p>
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<p class="MsoNormal">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).<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">A CAN transceiver is generally used with a CAN controller to send CAN fames.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">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.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I don't know this board - maybe the pins are shared and this will be OK.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><br>
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?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I think the power supply is only part of the question. What can come in via other connections.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Vehicles are particularly nasty places for electronics.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><br>
<a href="https://www.kincony.com/images/user-guide/manual/KC868-A16-images/ch00-power.png" target="_blank">https://www.kincony.com/images/user-guide/manual/KC868-A16-images/ch00-power.png</a><br>
<br>
<br>
<a href="https://www.kincony.com/images/user-guide/manual/KC868-A16-images/sh-00-power.jpg" target="_blank">https://www.kincony.com/images/user-guide/manual/KC868-A16-images/sh-00-power.jpg</a><br>
<br>
<br>
Regards, <br>
Daniel. <br>
<br>
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