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by jemtaylor
Mon Feb 09, 2015 4:35 pm
Forum: Automation, sensing and robotics
Topic: Smart Thermostat
Replies: 35
Views: 29559

Re: Smart Thermostat

Hi, Check out my blog. I've built pretty much exactly what you describe - a Pi controls the CH and HW and reads temperatures via sensors dotted round the house. They communicate with the Pi via serial radio links and they're pretty cheap. The batteries in the sensors last around a year. Here's the o...
by jemtaylor
Fri Nov 28, 2014 5:14 pm
Forum: Automation, sensing and robotics
Topic: RPi controlled central heating
Replies: 37
Views: 24385

Re: RPi controlled central heating

Hi, No - it's a simple on/off switch for the whole system with a switch for the Central Heating and another for the Hot Water. I have three wireless temp sensors one of which is in the main room and controls the heating. A second sensor is strapped to the hot water tank and provides the input for th...
by jemtaylor
Mon Aug 18, 2014 4:50 pm
Forum: Automation, sensing and robotics
Topic: Pi Central Heating (PiCH)
Replies: 16
Views: 11483

Re: Pi Central Heating (PiCH)

Hi, I've built my own home-brew CH controller with a Pi which I wired into the existing controller. This makes it easy because I don't need to deal with mains voltages or anything like that. I've recently added temperature control using wireless temperature sensors. The Pi presents a web page from w...
by jemtaylor
Mon Aug 18, 2014 4:16 pm
Forum: Automation, sensing and robotics
Topic: RPi controlled central heating
Replies: 37
Views: 24385

Re: RPi controlled central heating

Hi all, I've now added wireless temperature sensing to the Pi central heating controller I built last year. I have three sensors, two in rooms in the house and one attached to the hot water tank. The Pi listens out for the radio messages from the sensors that are transmitted every five minutes and w...
by jemtaylor
Sun Jul 27, 2014 12:02 pm
Forum: Automation, sensing and robotics
Topic: RPi controlled central heating
Replies: 37
Views: 24385

Re: RPi controlled central heating

Hi,

I've made some further updates to my blog. The Pi now has wireless temperature sensing throughout the house and of the hot water tank using XRF radio modules configured as temperature sensors.

cheers

J
by jemtaylor
Thu Nov 21, 2013 4:59 pm
Forum: Troubleshooting
Topic: Installed a sendmail package, pi sends mail on it's own.
Replies: 3
Views: 4391

Re: Installed a sendmail package, pi sends mail on it's own.

I'm getting the same issue. I set up the pi to send a mail every time my IP address changes which happens maybe once a month. But every morning at around 6:25 am I get an email for a failed delivery *to* [email protected]. It looks like a cron job is running and sending a test email every day. ...
by jemtaylor
Sun Sep 22, 2013 10:05 am
Forum: Automation, sensing and robotics
Topic: RPi controlled central heating
Replies: 37
Views: 24385

Re: RPi controlled central heating

I've updated my write-up of the central heating project with some pictures and code for the controller....

http://fudgetech.blogspot.co.uk/

cheers

J
by jemtaylor
Thu Sep 19, 2013 3:53 pm
Forum: Automation, sensing and robotics
Topic: RPi controlled central heating
Replies: 37
Views: 24385

Re: RPi controlled central heating

Hi,

I've just written a brief description of my own Central Heating control....

http://fudgetech.blogspot.co.uk/

It's a very simple set up and has been running for a couple of months now. My next phase is to add temperature sensing

cheers

Jeremy
by jemtaylor
Thu Sep 19, 2013 11:08 am
Forum: Networking and servers
Topic: Wifi dropping (using Edimax EW-7811UN)
Replies: 16
Views: 31668

Re: Wifi dropping (using Edimax EW-7811UN)

Spoke too soon. I've had two WiFi drop-outs using the new dongle. That's about one per week. Much better than before but still requires a re-boot to solve it. I think I'm going to have to improve the re-connection script so that it auto reboots if the re-connect fails to solve the problem after a nu...
by jemtaylor
Sun Sep 15, 2013 10:28 pm
Forum: Automation, sensing and robotics
Topic: Drayton LP522 Central Heating programmer
Replies: 8
Views: 4818

Re: Drayton LP522 Central Heating programmer

Hi,

I wrote up an explanation of my heating system - a bit light on detail at the moment but I'll add more later.
http://fudgetech.blogspot.co.uk/
cheers

J
by jemtaylor
Thu Sep 12, 2013 4:48 pm
Forum: Camera board
Topic: Star Trails
Replies: 14
Views: 5316

Re: Star Trails

I think you've missed the point a bit there.... you can't stack the images and align on the stars because the object of the exercise is to photograph star trails. So if anything alignment is *not* what you want.

cheers

J
by jemtaylor
Thu Sep 12, 2013 4:43 pm
Forum: Networking and servers
Topic: Wifi dropping (using Edimax EW-7811UN)
Replies: 16
Views: 31668

Re: Wifi dropping (using Edimax EW-7811UN)

Well, it's been five days now using the new WiPi dongle and I haven't had the connection drop-out yet. Hopefully this is the issue solved. Either it was a problem with that particular dongle or it is a problem with that make of dongle....

J
by jemtaylor
Sun Sep 08, 2013 7:26 pm
Forum: Networking and servers
Topic: Wifi dropping (using Edimax EW-7811UN)
Replies: 16
Views: 31668

Re: Wifi dropping (using Edimax EW-7811UN)

Hi, I'm having the same problem with an Edimax dongle. It was getting worse and worse. I was at the point the wifi was dropping out every day. I updated the o/s and that seemed to improve it - it was dropping after a week. But it still fails. Now I've switched dongle to a new WiPi one. Let's see if ...
by jemtaylor
Mon Aug 26, 2013 11:18 am
Forum: Troubleshooting
Topic: Wifi dropouts
Replies: 25
Views: 11398

Re: Wifi dropouts

I took a look at syslog (I have also added a script that checks the state of the wifi every 5 mins and attempts a restart if it has failed - this is what the 'Wifi seems up' messages are) and I see this: Aug 25 16:40:01 raspberrypi /USR/SBIN/CRON[8176]: (pi) CMD (/usr/local/bin/restartwifi.sh) Aug 2...
by jemtaylor
Mon Aug 26, 2013 11:09 am
Forum: Automation, sensing and robotics
Topic: Drayton LP522 Central Heating programmer
Replies: 8
Views: 4818

Re: Drayton LP522 Central Heating programmer

I haven't written it up yet.... but I will! The project is very similar to what this guy has done: http://www.youtube.com/watch?v=Guhf7eohl98 in fact I copied his circuits diagram for the interface using opto-isolators instead of relays. I also notice Brain Dorey has done the same using the LP522 as...
by jemtaylor
Sat Aug 24, 2013 11:05 am
Forum: Automation, sensing and robotics
Topic: Drayton LP522 Central Heating programmer
Replies: 8
Views: 4818

Re: Drayton LP522 Central Heating programmer

I have done the same thing - controlling the central heating via the pi and putting up a simple web page so that I can control it remotely. And to do this I deliberately chose the LP522 controller as the 'front end' because it is ideal for this job. I think it's better if it's an earlier model LP522...
by jemtaylor
Thu Aug 22, 2013 5:16 pm
Forum: Troubleshooting
Topic: Wifi dropouts
Replies: 25
Views: 11398

Wifi dropouts

Hi, My Pi is currently running as my central heating controller. It's using a wireless dongle to connect to my wifi and present the controlling web page out to the net. So far it has been working great. Recently though the wifi connection keeps dropping out which forces me to re-boot the pi. It seem...
by jemtaylor
Mon May 27, 2013 9:16 am
Forum: Beginners
Topic: fixed ip for wifi
Replies: 6
Views: 3328

Re: fixed ip for wifi

Yeah!!!

Your suggestions seem to have cracked it. Thanks!
by jemtaylor
Sun May 26, 2013 5:32 pm
Forum: Beginners
Topic: fixed ip for wifi
Replies: 6
Views: 3328

Re: fixed ip for wifi

Ok... thanks for the idea. But it didn't work I'm afraid. Any other ideas? With fixed IP for the ethernet and dynamic for the WiFi it works fine. I fix the ehternet on 192.168.0.10 and the WiFi seems to consistently get 192.168.0.11. If I try and fix the WiFi to 192.168.0.20 I cannot connect to eith...
by jemtaylor
Sat May 25, 2013 1:55 pm
Forum: Beginners
Topic: fixed ip for wifi
Replies: 6
Views: 3328

fixed ip for wifi

Hi all, I've got the wifi adapter working (Dynamode Nano) when configured as DHCP and my ethernet connection on a fixed ip address but when I configure them both as fixed and reboot I cannot connect to either - they timeout. I can see that they have connected and got the correct IP addresses by look...

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