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<div class="moz-cite-prefix">I was just reading an article in the
Jan issue of Elektor, where the author mentions this:<br>
<blockquote>"The ESP32, like its ESP8266 brethren, produces a lot
of noise on the supply line. Good noise suppression is
essential. An additional capacitor can be added between the +
and - of the supply. A 100 uF capacitor is more than
sufficient. The ESP32 draws high peak currents (200 to 300
mA). The USB interface cannot supply this much current. This
means you have to use an external power supply of sufficient
size."<br>
</blockquote>
- sgh<br>
<br>
On 01/28/2018 12:24 AM, Scott Hall wrote:<br>
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<div class="moz-cite-prefix">You're in luck!! Github discussion
specifically on your question:<br>
"<i>5 Volts in my Laptop #31</i>" <a
class="moz-txt-link-freetext"
href="https://github.com/Edzelf/ESP32-Radio/issues/31"
moz-do-not-send="true">https://github.com/Edzelf/ESP32-Radio/issues/31</a><br>
<br>
Also see: FreeIO.org "<i>ESP32 web server – Arduino IDE</i>"<br>
<a class="moz-txt-link-freetext"
href="http://freeio.org/2017/04/esp32-web-server-arduino-ide/"
moz-do-not-send="true">http://freeio.org/2017/04/esp32-web-server-arduino-ide/</a><br>
<br>
Don't forget Expressif's own forums: "ESP32 Arduino"<br>
<a class="moz-txt-link-freetext"
href="https://esp32.com/viewforum.php?f=19"
moz-do-not-send="true">https://esp32.com/viewforum.php?f=19</a><br>
<br>
There have been numerous articles on this in the electronics
hobby magazines:<br>
<br>
Elektor Magazine, article posted on Nov. 15, 2017, 15:34 by Jens
Nickel<br>
"<i>My Journey into the Cloud (20): The ESP32 creates its own
Wi-Fi network</i>"<br>
<a class="moz-txt-link-freetext"
href="https://www.elektormagazine.com/news/my-journey-into-the-cloud-20-the-esp32-creates-its-own-wi-fi-network?utm_source=Elektor+International+%28English%29&utm_campaign=d40d2578e6-Build_an_ESP32_websterver_25_RPi_s_up_fo11_16_2017&utm_medium=email&utm_term=0_23bd160f48-d40d2578e6-240518625&mc_cid=d40d2578e6&mc_eid=18946a19f1"
moz-do-not-send="true">https://www.elektormagazine.com/news/my-journey-into-the-cloud-20-the-esp32-creates-its-own-wi-fi-network?utm_source=Elektor+International+%28English%29&utm_campaign=d40d2578e6-Build_an_ESP32_websterver_25_RPi_s_up_fo11_16_2017&utm_medium=email&utm_term=0_23bd160f48-d40d2578e6-240518625&mc_cid=d40d2578e6&mc_eid=18946a19f1</a><br>
<br>
Elektor Magazine, review posted on Jan 8, 2018 by Clemens Valens<br>
"<i>Review: Espressif ESP32-PICO-KIT Getting Started Guide</i>"
-- many useful links<br>
<a class="moz-txt-link-freetext"
href="https://www.elektormagazine.com/news/esp32-pico-kit-boot-camp"
moz-do-not-send="true">https://www.elektormagazine.com/news/esp32-pico-kit-boot-camp</a><br>
<br>
Elektor Magazine, published issue 9, 2017, pg 6, by Tam Hanna<br>
"<i>ESP32 for Power Users</i>" -- many useful links and tips<br>
<a class="moz-txt-link-freetext"
href="https://www.elektormagazine.com/magazine/elektor-201709/40717"
moz-do-not-send="true">https://www.elektormagazine.com/magazine/elektor-201709/40717</a><br>
<br>
-- also use Elektor's search as there are many other articles<br>
<br>
Nuts & Volts Magazine, July 2017 issue, by Craig Lindley<br>
<br>
<br>
Hackaday, article posted on Sep 15, 2016 by Elliot Williams<br>
"<i>ESP32 Hands-On: Awesome Promise</i>"<br>
<a class="moz-txt-link-freetext"
href="https://hackaday.com/2016/09/15/esp32-hands-on-awesome-promise/"
moz-do-not-send="true">https://hackaday.com/2016/09/15/esp32-hands-on-awesome-promise/</a><br>
<br>
- sgh<br>
<br>
On 01/27/2018 09:29 PM, Dwight Morgan via TriEmbed wrote:<br>
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<p class="MsoNormal">I just got an ESP-WROOM-32 and I’m having
trouble just getting it set up. I’m going through all the
instructions for Arduino and Git but the serial port refuses
to show up. I read in one forum where it needs a separate
power source because the USB is not enough so I connected
two AA batteries to the 3v3 (for 3 volts) and ground along
with the USB to load a simple sketch, but no dice, no serial
in the Arduino tools menu to select. I remember some time
ago seeing one of the Triembed meetings on the ESP32 but I
can’t find it on the website. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I hope somebody is using the ESP32 and
can shed light on this problem. Any help is appreciated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dwight<o:p></o:p></p>
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<pre wrap="">_______________________________________________
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<pre class="moz-signature" cols="80">--
Scott G. Hall
Raleigh, NC, USA
<a class="moz-txt-link-abbreviated" href="mailto:ScottGHall1@GMail.Com" moz-do-not-send="true">ScottGHall1@GMail.Com</a></pre>
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</p>
<pre class="moz-signature" cols="80">--
Scott G. Hall
Raleigh, NC, USA
<a class="moz-txt-link-abbreviated" href="mailto:ScottGHall1@GMail.Com">ScottGHall1@GMail.Com</a></pre>
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