Search found 17 matches

by andrewr
Wed Jan 22, 2014 6:38 am
Forum: Module Discussion
Topic: HUMID (DHT22) sensor - poor humidity readings
Replies: 7
Views: 6169

Re: HUMID (DHT22) sensor - poor humidity readings

Jed,
I had stumbled across your mounting method and used a similar concept.

Apologies for the crappy image...
Image
by andrewr
Tue Jan 21, 2014 10:33 am
Forum: Module Discussion
Topic: HUMID (DHT22) sensor - poor humidity readings
Replies: 7
Views: 6169

Re: HUMID (DHT22) sensor - poor humidity readings

Jed, Yes its mounted in an inverted plastic zippy box (inverted to protect the DHT22 from water) with holes drilled around the sides to let air through, which is mounted underneath my deck, to further protect the unit from direct rain. Two things have me intrigued - even looking at the raw data I've...
by andrewr
Mon Jan 20, 2014 9:33 am
Forum: Module Discussion
Topic: HUMID (DHT22) sensor - poor humidity readings
Replies: 7
Views: 6169

HUMID (DHT22) sensor - poor humidity readings

Hi all, I have a HUMID sensor mounted outside in such a way that it cannot get wet, but still has free flowing air around it. I've noticed that since the middle of December the humidity reading from it has been gradually decreasing from what the actual humidity is, even to the point of reading 1% on...
by andrewr
Sun Aug 11, 2013 1:07 am
Forum: EtherTen
Topic: EtherTen running hot
Replies: 21
Views: 13992

Re: EtherTen running hot

Nothing exciting Jon, just using the EtherTen and two HUMID sensors to monitor indoor and outdoor temps. The sketch on the EtherTen just serves up a real simple web page which a perl script running on my server interrogates every 5 minutes. The results are then graphed using MRTG to produce some nic...
by andrewr
Fri Aug 02, 2013 11:09 pm
Forum: SuperHouseTV Home Automation
Topic: Ep 4: Making home automation gear run quietly
Replies: 1
Views: 3911

Re: Ep 4: Making home automation gear run quietly

Hi Jon,

Sometime back your ethernet switch died and at the time I tweeted to you was it from overheating due to reduced airflow; did you ever find out whether that was the cause?

Cheers

Andrew
by andrewr
Fri Aug 02, 2013 12:18 pm
Forum: EtherTen
Topic: EtherTen running hot
Replies: 21
Views: 13992

Re: EtherTen running hot

Cheers Jon.

I might go down the path of a 9v regulated wall wart me thinks.

First time I've played with any sort of Arduino and am having a ball so far :-)
by andrewr
Fri Aug 02, 2013 11:40 am
Forum: EtherTen
Topic: EtherTen running hot
Replies: 21
Views: 13992

Re: EtherTen running hot

One of the major sources of heat on both the EtherTen and the EtherMega isn't the voltage regulator: it's the Wiznet Ethernet chip! The W5100 is well known for running really hot even in normal operation. Just started playing with an EtherTen today and I will agree with you Jon, that yes, the W5100...