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Thread: Introducing the HGI80 alternative - the latest DIY kid on the block

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  1. #1
    Automated Home Legend
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    Default Introducing the HGI80 alternative - the latest DIY kid on the block

    A few of us in the background have produced and tested a new DIY hardware platform that acts exactly like an HGI80. Think of it as an advanced version of the NanoCUL.
    The idea was to create a platform that was cheaper and easily available. One that could be put together using off the shelf parts. There is just one custom PCB that basically "glues" all the other parts together. Ofcourse there is no real need to purchase the custom PCB, you can even put this together on a breadboard or vero board.
    I've attached a few pictures to show you what it looks like in parts as well as a fully assembled unit.
    If you are interested in a board, put your name down in a list below and one of us will get in touch with purchase details. At this point, you need to be able to / be comfortable soldering 2mm pitch components.
    If and when a fully assembled unit is available to purchase, I will update this thread accordingly. For now, I am just looking for interest. So mark, if you want just a PCB or if you are interested in a fully assembled unit.
    I will list out all the parts needed to put a complete unit together.
    When plugged it, it will work just like the HGI80 and so is directly interfaced with Domoticz, Home Assistant, OpenHAB etc. You can also use the brilliant evohome_rf transport that basically decodes most of the Evohome radio messages.
    In addition to the custom PCB, you will need the following parts.
    1. SS Micro (a small USB Arduino board)
    2. CC1101 868MHz module (Red or Green)
    3. SMA socket, if you want to use a proper antenna
    4. 868Mhz antenna
    The Green CC1101 modules come with a pig tail antenna that is acceptable.
    Attached Images Attached Images

  2. #2
    Automated Home Lurker
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    Great news !
    +1 for the fully assembled unit
    Thanks.

  3. #3
    Automated Home Guru
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    Great news !
    +1 for the fully assembled unit
    Thanks.
    Chris

  4. #4
    Automated Home Legend
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    Default

    That's how it looks plugged into a laptop, just to give you an idea of size. Here I am testing a long full wave length antenna, but you can use a 1/2th or ever 1/4th wave length antenna. The Green CC1101 modules tend to come bundled with a 1/4th wavelength pigtail antenna. They work too.
    Pictures show the various antennas being tested.
    Attached Images Attached Images

  5. #5
    Automated Home Jr Member
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    +1 for the fully assembled unit please.Kind regards Gary.

  6. #6
    Automated Home Guru
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    Is that plug and play - no programming?

  7. #7
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    The assembled ones will be plug and play. The folks who opt for the DIY version will simply need to upload the firmware on to the SS Micro using the Arduino IDE.

  8. #8
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    +1 for the fully assembled unit please. Thanks

  9. #9
    Automated Home Legend
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    I'll try and see if I can negotiate better prices for 20 sets. It would be great if I can get the price per unit to get below the £30 mark.

  10. #10
    Automated Home Guru
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    Not for a Luddite like me, but I am sure there will be several interested, may be worth a few PMs to any of the more techie members if they have not posted for a while to alert them to the possibility. Just watch the Intellectual property situation. Don’t want Honeywell on your back, could get expensive.

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