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From: Jeffrey Warren <jeff@publiclab.org> | |
Date: Tue, 30 Apr 2019 18:59:21 -0400 | |
Message-ID: <CAGqfm_D0UHi28M=uFZCnRiiLhdkJeqSNbRpzrWNL0_EQ=qFJGQ@mail.gmail.com> | |
Subject: Re: New comment on Can someone clarify the colors on the simple air sensor? (turning white when plugged in) (#19173) | |
To: notifications@publiclab.org | |
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thanks, Chris, i haven't seen any LEDs burn out yet, and we've been running | |
them for weeks in some cases. If they do, i'll definitely add in a | |
resistor. | |
On Mon, Apr 29, 2019 at 11:20 PM <notifications@publiclab.org> wrote: | |
> Hi! There's been a response to a discussion you're involved in. You can | |
> reply to this email or visit this link: | |
> | |
> | |
> https://publiclab.org/questions/stevie/04-26-2019/can-someone-clarify-the-colors-on-the-simple-air-sensor#answer-0-comment-24002 | |
> | |
> *cfastie <https://publiclab.org/profile/cfastie> wrote:* | |
> ------------------------------ | |
> | |
> According to the link at your wiki the RGB LEDs are rated for 2 to 3.2 | |
> volts. Your instructions for connecting the LED indicate connecting the LED | |
> to 5 volts on the Arduino Nano. I'm not sure why the LEDs don't burn out | |
> rather quickly when powered with 5 volts. Maybe you are doing something in | |
> the sketch to limit the current. The LEDs apparently come with resistors | |
> which could be used to limit the current so the LEDs do not burn out, but | |
> these resistors are apparently not included in your kits. The Arduino Nano | |
> has a 3.3 volt pin which could be used instead of the 5 volt pin. Using | |
> that pin might protect the LEDs, but using one of the resistors on the | |
> ground pin of the LED might also be a good idea. Chris | |
> ------------------------------ | |
> | |
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<div dir=3D"ltr">thanks, Chris, i haven't seen any LEDs burn out yet, a= | |
nd we've been running them for weeks in some cases. If they do, i'l= | |
l definitely add in a resistor.=C2=A0</div><br><div class=3D"gmail_quote"><= | |
div dir=3D"ltr" class=3D"gmail_attr">On Mon, Apr 29, 2019 at 11:20 PM <<= | |
a href=3D"mailto:notifications@publiclab.org">notifications@publiclab.org</= | |
a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0p= | |
x 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi= | |
! There's been a response to a discussion you're involved in. You c= | |
an reply to this email or visit this link: | |
<p><a href=3D"https://publiclab.org/questions/stevie/04-26-2019/can-someone= | |
-clarify-the-colors-on-the-simple-air-sensor#answer-0-comment-24002" target= | |
=3D"_blank">https://publiclab.org/questions/stevie/04-26-2019/can-someone-c= | |
larify-the-colors-on-the-simple-air-sensor#answer-0-comment-24002</a></p> | |
<p><b><a href=3D"https://publiclab.org/profile/cfastie" target=3D"_blank">c= | |
fastie</a> wrote:</b></p> | |
<hr>=20 | |
<p>According to the link at your wiki the RGB LEDs are rated for 2 to 3.2 v= | |
olts. Your instructions for connecting the LED indicate connecting the LED = | |
to 5 volts on the Arduino Nano. I'm not sure why the LEDs don't bur= | |
n out rather quickly when powered with 5 volts. Maybe you are doing somethi= | |
ng in the sketch to limit the current. The LEDs apparently come with resist= | |
ors which could be used to limit the current so the LEDs do not burn out, b= | |
ut these resistors are apparently not included in your kits. | |
The Arduino Nano has a 3.3 volt pin which could be used instead of the 5 vo= | |
lt pin. Using that pin might protect the LEDs, but using one of the resisto= | |
rs on the ground pin of the LED might also be a good idea. | |
Chris | |
</p> | |
<hr> | |
<p>Look like spam? | |
Mark this as <a href=3D"https://publiclab.org/admin/mark_comment_spam/2= | |
4002" target=3D"_blank">Spam</a> | |
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<div style=3D"color:rgb(170,170,170)"> | |
<p>Reply at: <a href=3D"https://publiclab.org/questions/stevie/04-26-2019/c= | |
an-someone-clarify-the-colors-on-the-simple-air-sensor#answer-0-comment" ta= | |
rget=3D"_blank">https://publiclab.org/questions/stevie/04-26-2019/can-someo= | |
ne-clarify-the-colors-on-the-simple-air-sensor#answer-0-comment</a></p> | |
<p>Report abuse to: <a href=3D"mailto:moderators@publiclab.org" target=3D"_= | |
blank">moderators@publiclab.org</a></p> | |
Check out the blog at <a href=3D"https://publiclab.org/blog" target=3D"_bla= | |
nk">https://publiclab.org/blog</a> | Love our work? Become a Public Lab Sus= | |
taining Member today at <a href=3D"https://publiclab.org/donate" target=3D"= | |
_blank">https://publiclab.org/donate</a> | |
If this email title has an ID in the format #0000, you can reply with the e= | |
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