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Re: Relay light control problem
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Wouldn't the earlier suggestion of "piggy-backing" an additional
higher cur=
rent relay or even a contactor, be an easier solution?
Regards
Tracey
----- Original Message -----
From: Nicholas Humfrey njh@xxxxxxx [ukha_d] <ukha_d@xxxxxxx>
Reply-To: <ukha_d@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: 13-Feb-17 12:07:02 PM
Subject: RE: [ukha_d] Relay light control problem
Hello,
I am also having problems with a cheap relay board from eBay.
Although my issue is with the Arduino micro-controller crashing from=20
time to time, I assume due to to Electrostatic Discharge. It all works=20
fine when there is no load attached.
Can anyone recommend a mid-price board that has higher-quality relays=20
and/or arcing suppression?
nick.
On 2017-02-13 08:38, 'Simon=20
Coates' simon@xxxxxxx [ukha_d]=20
wrote:
> Simon,
>=20
> It=E2=80=99s caused by arcing at the relay contacts since you are
switchi=
ng
> an inductive load.
>=20
> Options:
>=20
> Add bidirectional transient-voltage-suppression across the existing
> relay output to snub the arcing.
>=20
> Use you GPIO board relay to switch another relay that is inductive
> rated i.e. a small contactor or solid state relay.
>=20
> Change the fluorescent fittings for ones with high frequency ballasts.
>=20
> The best solution is probably adding the additional relay.
>=20
> HTH
>=20
> Simon
>=20
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx]
> Sent: 13 February 2017 08:14
> To: UK Home Automation List <ukha_d@xxxxxxx>
> Subject: [ukha_d] Relay light control problem
>=20
> Hi
>=20
> I've=20
recently been trying to use relays to control the internal lights
> in my garage, but=20
I've been having issues. They are fluorescent tubes,
> two controlled by each relay. The relays are those ones you see all
> over eBay, with GPIO level inputs for control by a Raspberry Pi etc.
>=20
> The issue I've=20
had is that after a while they simply stick, always on.
> So when the pi sends the signal for them to go off, the lights stay
> on.
>=20
> I initially thought it was a faulty relay, but I ordered a replacement
> and fitted them on Saturday, and now one side is stuck again.
>=20
> Is it something to do with the load of these fluorescent tubes? Any
> ideas?
>=20
> Regards
>=20
> Simon
>=20
> ---
>=20
>=20
"sorrowful, yet always rejoicing; poor, yet making many rich; having
> nothing, and yet possessing everything"=20
2 Cor 6:10
>=20
> [Non-text portions of this message have been removed]
>=20
>=20
>=20
> Links:
> ------
> [1]
>=20
https://groups.yahoo.com/neo/groups/ukha_d/conversations/messages/166171;_y=
lc=3DX3oDMTJycDVtMGN0BF9TAzk3MzU5NzE0BGdycElkAzExMDk2MzkEZ3Jwc3BJZAMxNzA1MD=
QxOTkyBG1zZ0lkAzE2NjE3MQRzZWMDZnRyBHNsawNycGx5BHN0aW1lAzE0ODY5NzUxMzE-
?act=3Dreply&messageNum=3D166171
> [2]
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oDMTJlODRwcW5xBF9TAzk3MzU5NzE0BGdycElkAzExMDk2MzkEZ3Jwc3BJZAMxNzA1MDQxOTkyB=
HNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQ4Njk3NTEzMQ--
> [3]
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https://groups.yahoo.com/neo/groups/ukha_d/conversations/topics/166169;_ylc=
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DMTY2MTY5
> [4] https://yho.com/1wwmgg
> [5]
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> [7] https://info.yahoo.com/privacy/us/yahoo/groups/details.html
> [8] https://info.yahoo.com/legal/us/yahoo/utos/terms/
------------------------------------
Posted by: Nicholas Humfrey <njh@xxxxxxx>
------------------------------------
------------------------------------
Yahoo Groups Links
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<DIV>Wouldn't the earlier suggestion of "piggy-backing" an
additional highe=
r current relay or even a contactor, be an easier solution?</DIV>
<DIV> </DIV>
<DIV>Regards</DIV>
<DIV> </DIV>
<DIV>Tracey</DIV>
<DIV> </DIV>
<DIV> </DIV>
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<DIV><B>----- Original Message -----</B></DIV>
<DIV><B>From:</B> Nicholas Humfrey njh@xxxxxxx [ukha_d]
<<A>ukha_d@ya=
hoogroups.com</A>></DIV>
<DIV><B>Reply-To:</B>
<<A>ukha_d@xxxxxxx</A>></DIV>
<DIV><B>To:</B>
<<A>ukha_d@xxxxxxx</A>></DIV>
<DIV><B>Sent:</B> 13-Feb-17 12:07:02 PM</DIV>
<DIV><B>Subject:</B> RE: [ukha_d] Relay light control
problem</DIV>
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Hello,<BR><BR>I am also having problems with a cheap relay
board from eBay.=
<BR><BR>Although my issue is with the Arduino micro-controller
crashing fro=
m <BR>time to time, I assume due to to Electrostatic Discharge. It
all work=
s <BR>fine when there is no load attached.<BR><BR>Can
anyone recommend a mi=
d-price board that has higher-quality relays <BR>and/or arcing
suppression?=
<BR><BR><BR><BR>nick.<BR><BR><BR>On
2017-02-13 08:38, 'Simon Coates' <A>sim=
on@xxxxxxx</A> [ukha_d] <BR>wrote:<BR>>
Simon,<BR>> <BR>>=
; It=E2=80=99s caused by arcing at the relay contacts since you are
switchi=
ng<BR>> an inductive load.<BR>>
<BR>> Options:<BR>> <BR>> Ad=
d bidirectional transient-voltage-suppression across the
existing<BR>> r=
elay output to snub the arcing.<BR>> <BR>> Use
you GPIO board relay t=
o switch another relay that is inductive<BR>> rated i.e. a
small contact=
or or solid state relay.<BR>> <BR>> Change the
fluorescent fittings f=
or ones with high frequency ballasts.<BR>> <BR>>
The best solution is=
probably adding the additional relay.<BR>> <BR>>
HTH<BR>> <BR>>=
; Simon<BR>> <BR>> From:
<A>ukha_d@xxxxxxx</A> [mailto:<A>ukh=
a_d@xxxxxxx</A>]<BR>> Sent: 13 February 2017
08:14<BR>> To: U=
K Home Automation List
<<A>ukha_d@xxxxxxx</A>><BR>> Subjec=
t: [ukha_d] Relay light control problem<BR>>
<BR>> Hi<BR>> <BR>>=
; I've recently been trying to use relays to control the internal
lights<BR=
>> in my garage, but I've been having issues. They are
fluorescent tubes=
,<BR>> two controlled by each relay. The relays are those ones
you see a=
ll<BR>> over eBay, with GPIO level inputs for control by a
Raspberry Pi =
etc.<BR>> <BR>> The issue I've had is that after
a while they simply =
stick, always on.<BR>> So when the pi sends the signal for
them to go of=
f, the lights stay<BR>> on.<BR>>
<BR>> I initially thought it was =
a faulty relay, but I ordered a replacement<BR>> and fitted
them on Satu=
rday, and now one side is stuck again.<BR>> <BR>>
Is it something to =
do with the load of these fluorescent tubes? Any<BR>>
ideas?<BR>> <BR=
>> Regards<BR>> <BR>>
Simon<BR>> <BR>> ---<BR>>
<BR>> =
"sorrowful, yet always rejoicing; poor, yet making many rich;
having<BR>>=
; nothing, and yet possessing everything" 2 Cor 6:10<BR>>
<BR>> [Non-=
text portions of this message have been removed]<BR>>
<BR>> <BR>> =
<BR>> Links:<BR>> ------<BR>>
[1]<BR>> <A href=3D"https://group=
s.yahoo.com/neo/groups/ukha_d/conversations/messages/166171;_ylc=3DX3oDMTJy=
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[6]<BR>> <A href=3D"https=
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><BR>------------------------------------<BR>Posted by:
Nicholas Humfrey &l=
t;<A>njh@xxxxxxx</A>><BR>------------------------------------<BR><BR>=
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