Search found 17 matches

by andrewr
Fri Feb 06, 2015 9:04 am
Forum: EtherTen
Topic: Let the smoke out....
Replies: 13
Views: 6772

Re: Let the smoke out....

Hi Stylmast, I have always wondered & never found a good response as to why some systems are connected to earth and not others.. Capacitor coupled works most of the time but direct connect causes problem as above.. ... and TP-Link support are struggling with my question: (email sent with attached jp...
by andrewr
Wed Feb 04, 2015 10:52 am
Forum: EtherTen
Topic: Let the smoke out....
Replies: 13
Views: 6772

Re: Let the smoke out....

Just to add a bit further to this thread for everyones amusement and information.... I've checked another TP-Link TL-SG1008P that we had at work and it was the same - the -ve of the 48vdc supply was hooked to the mains earth. Checking a Linksys LGS108P that we also had, the DC supply on it is fully ...
by andrewr
Thu Jan 29, 2015 8:36 pm
Forum: EtherTen
Topic: Let the smoke out....
Replies: 13
Views: 6772

Re: Let the smoke out....

Hi Angus,

No, it was plugged into the same power board as the PC and connected to the EtherTen via a 1.5m Cat5 lead.

Cheers,

Andrew
by andrewr
Fri Jan 23, 2015 8:22 am
Forum: EtherTen
Topic: Let the smoke out....
Replies: 13
Views: 6772

Re: Let the smoke out....

A bit of further info.... I noticed another thread on here about power issues and it looks like I may have had the same thing. The PoE switch I was feeding it by is a TP-Link TL-SG1008P and it appears the -ve of the 48V supply feeding it is hooked to the mains earth. I was using one of the USB ports...
by andrewr
Fri Jan 23, 2015 6:06 am
Forum: EtherTen
Topic: Let the smoke out....
Replies: 13
Views: 6772

Let the smoke out....

Hi guys, Made a (probable) newbie mistake today thats probably going to be costly.... Installed a 802.3af PoE regulator onto an EtherTen, plugged into a PoE switch and watched happily it start up. Disconnected the ethernet cable, plugged in the USB lead, installed a sketch (basic webserver), brought...
by andrewr
Mon Dec 01, 2014 11:59 am
Forum: Random Chit-Chat
Topic: Code help
Replies: 3
Views: 1528

Re: Code help

John,

Thanks !! amazing how the obvious (ie the missing library) isn't quite so obvious at times ...

:shock: :?

Andrew
by andrewr
Mon Dec 01, 2014 9:41 am
Forum: Random Chit-Chat
Topic: Code help
Replies: 3
Views: 1528

Code help

Hi everyone, Found this fantastic project http://www.geekrant.org/2013/06/23/ which is just what I wanted to control a set of real traffic lights I have. When I try to verify the code in the ide it comes up with these two errors: traffic_lights.ino: In function 'void transition_to_next_state()': tra...
by andrewr
Thu Oct 23, 2014 10:57 pm
Forum: Module Discussion
Topic: HUMID (DHT22) sensor - poor humidity readings
Replies: 7
Views: 5693

Re: HUMID (DHT22) sensor - poor humidity readings

Well, dragging up an old thread, but almost 12 months down the track and it looks like I have the replacement failing as well.... :(

Long term graphing is showing the same symptoms, including days with supposed 1% humidity levels.

I wonder what's causing them to fail.....
by andrewr
Thu Feb 20, 2014 10:36 am
Forum: Module Discussion
Topic: DHT22 HUMID Sensor Query
Replies: 2
Views: 1797

Re: DHT22 HUMID Sensor Query

I had a DHT22 that the humidity sensor eventually failed, reading only < 10% humidity all the time. It was replaced and the new one reads correctly in comparison to BOM data. Soooo it's quite possible that you may have a suspect DHT22.


Sent from my iPad using Tapatalk
by andrewr
Wed Jan 22, 2014 6:38 am
Forum: Module Discussion
Topic: HUMID (DHT22) sensor - poor humidity readings
Replies: 7
Views: 5693

Re: HUMID (DHT22) sensor - poor humidity readings

John,

Email will be sent shortly. Thanks!

Andrew