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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

Buy individually or both books together. Delivery is free!


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    • CommentAuthorjanoska666
    • CommentTimeMay 19th 2015
     
    Hi folks, Good afternoon. i am building a ventilation unit. I need to tap the wealth of lore here on GBF.
    I need a cheap and easy to configure ventilation control unit.
    The inputs are four DSB1820 dallas digital temperature sensors. The outputs are It 0 to 10 d.c. control outputs controlling two Electrically commutated fans. I need to monitor the temperature of the inlet, exaust on both sides of the heat exchanger to maintain high efficency. I know arduino will be recommended but i havent time or technical skill for programming. Some type of simple PLC with a simple interface for experiment.Any thoughts would be much appreciated. Thanks .
    •  
      CommentAuthorSteamyTea
    • CommentTimeMay 19th 2015
     
    If you bought the very cheapest raspberry pi, I can send you some logging code. Making it a controller is a simple modification. You will also need a solid state relay to run the motors. Again not difficult.
    • CommentAuthorMackers
    • CommentTimeMay 19th 2015
     
    Plus one for the Raspberrypi. It's fantastic to use and can handle this very easily
    •  
      CommentAuthorSteamyTea
    • CommentTimeMay 19th 2015 edited
     
    Here is a simple tutorial that shows what to do:
    http://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/temperature/
    • CommentAuthorEd Davies
    • CommentTimeMay 19th 2015
     
    Users of this forum wookey and TimSmall were conspiring to produce an open source MHRV system (not just the controller but the whole design). It's been quite a few months since I've talked to them about it but maybe they could help. They were using small Linux boards like the Raspberry Pi but different and had motor speed control running on the bench.
    • CommentAuthorjanoska666
    • CommentTimeMay 19th 2015
     
    Thanks lads. Sound. I will give it a try with much trepidation.
    If the elusive PI Gurus pop up , direct them my way. Again Thanks
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