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<div class="moz-cite-prefix">Hi Daniel,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">First on your list would be my first
choice, only because of the size of the regulator :) Also appears
to be available on Trademe for a few-more-bucks <a
href="https://www.trademe.co.nz/Browse/Listing.aspx?id=2212079583">https://www.trademe.co.nz/Browse/Listing.aspx?id=2212079583</a>Datasheet
for the XL6009 part is <a class="moz-txt-link-freetext" href="https://www.sunrom.com/get/283300">https://www.sunrom.com/get/283300</a> indicates
that the part is up to 94% efficient, and has a wide input range -
5-32V. Power spikes on car 12V rails can be quite large, so having
a regulator that can tolerate a 32V spike is heading in the right
direction.</div>
<p>As Volker says, mechanical vibration can be a killer; all
components need to be well secured; screwing or gluing modules to
an insulated substrate may work well.<br>
</p>
<p>Looks like a great project, links to photos of the project /
vehicle appreciated.</p>
<p>Regards,</p>
<p>Mark</p>
<div class="moz-cite-prefix">------------------<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 7/07/2019 9:04 AM, Daniel Powell
wrote:<br>
</div>
<blockquote type="cite"
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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.
<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’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.
<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">Unfortunately
my pics break the 40k email list limit, as such I’ll include
links to the devices.
<o:p></o:p></span></p>
<p class="MsoNormal"><a
href="https://www.aliexpress.com/item/32280431843.html"
moz-do-not-send="true">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"
moz-do-not-send="true">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"
moz-do-not-send="true">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"
moz-do-not-send="true">https://www.aliexpress.com/item/32920672534.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"><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).
<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">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>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
</div>
<br>
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