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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Sorry for the intrusion with something bound to be a simplistic and rather rudimentary question given my lacklustre knowledge in electronics.
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I’m currently developing an ESP32 wrover, CAN Bus based dash for my race and rally car. I’ve already prototyped the dash using a Nano (which was too slow to capture every frame), then prototyped
all but the 7 segments using the ESP32 (7 segments are 5v LL, ESP is 3.3). I’ve recently transferred it to protoboard (which I’m simply using as a flat substrate to level and mount the modules). I need to reliably convert the car 12v to the 5 volt required
for VCC on most of my devices. I’ve purchased a handful of different aliexpress 3A DC to DC voltage stepdown regulators and a 1.8A buck converter.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I wondered, given the noisy power environment of a race car, which, if any, would be best to provide 5v to my dash.
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Unfortunately my pics break the 40k email list limit, as such I’ll include links to the devices.
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<p class="MsoNormal"><a href="https://www.aliexpress.com/item/32280431843.html">https://www.aliexpress.com/item/32280431843.html</a> ,
<span style="font-size:9.0pt;font-family:"Open Sans",sans-serif;color:#999999;background:white">
LM2596HVS, XL4005 and </span><span style="font-size:9.0pt;font-family:"Open Sans",sans-serif;color:black;background:white"> </span><span class="sku-title-value"><span style="font-size:9.0pt;font-family:"Open Sans",sans-serif;color:#999999;background:white">XL7015</span></span><o:p></o:p></p>
<p class="MsoNormal"><a href="https://www.aliexpress.com/item/32961984080.html">https://www.aliexpress.com/item/32961984080.html</a> ,
<span style="font-size:9.0pt;font-family:"Open Sans",sans-serif;color:#999999;background:white">
12V LM7812</span><o:p></o:p></p>
<p class="MsoNormal"><a href="https://www.aliexpress.com/item/32921703886.html">https://www.aliexpress.com/item/32921703886.html</a><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I’ve previously used a radio control UBEC to convert the car power to something I could pump into a raspberry pi, through it’s on board conditioning, however I’ve never bothered to understand the
fundamentals of power supply or how to smooth it such that I don’t damage componentry.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><a href="https://www.aliexpress.com/item/32920672534.html">https://www.aliexpress.com/item/32920672534.html</a><o:p></o:p></p>
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Help genuinely appreciated.
<br>
<br>
For those of you interested and wishing to punish yourselves further. <br>
TTGO ESP32 wrover (on board CAN) <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">NS65HVD230 CAN transceiver.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">MAX2719 8x8 matrix (gear display)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">4 x TM1637 - 7 segments (switched pages of 4 pressures/temps/alerts)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">2 x 8 WS2812 Neopixles. (RPM and colour change for alerts).
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">TXS018E 8 channel logic level converters (yet to test).
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Regards, <br>
Daniel Powell. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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