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Thread: SanDevices E682 vs E6804

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    Toymaker/Delivery Guy Santa Shannon's Avatar
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    Default SanDevices E682 vs E6804

    I have just ordered an E6804 and read the manual in anticipation of it's arrival. The more I look at it the more impressed I am with what the 6804 can do and am left wondering why the 682 has such a broad audience. I understand that the additional outputs meet some very specific design needs; if for instance you are running many varieties of pixel standards. I can also see that the dual voltage is nice, again for those with very specific needs.

    But, unless I'm mistaken, with the E6804 you can run the controller in 12v, have a couple of 12v strings attached to a couple of ports and then have another port setup to drive a 5V string and just use the data (and clock, if req) from the board and have the power bypass the controller and go straight from the power supply to the string. Is this not the case? I know I'd miss the benefit of the on-board fuses, but inline fuses are cheap.

    Both units can handle 12 universes of pixels. It seems to me that, unless you are running more than 4 different types of output there is no need or the 682. Am I missing something? If I were using it as a pixel controller AND as a e1.31-DMX bridge then perhaps the extra outputs would be particularly helpful, since each DMX-out would be driving so many fewer pixels than what it's capable of (ideally distributing 510 pixels to each output of the 6804 instead of the 170 for each DMX output) so spreading that load over more outputs would be nice. But for the price difference why not just get 2 6804s? Unless 8 ports just isn't enough and you really need 12. For now I'm running all 1 type of strip, considering adding some strings (all of the same type) and perhaps dedicating a port to DMX to drive a TinyPix with some floods and maybe a star. All told less than a thousand pixels.

    So, is there some advantage to the E682 I'm missing?
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    Havin fun ! kidcole's Avatar
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    Default Re: SanDevices E682 vs E6804

    For the reasons you have listed, I prefer the E682. I much prefer the smaller load on a larger number of outputs. Of course you could wire up either one for remote power. I very much like the fuses for protection instead of having to add them to the dongles in my controller box. I am also using two of the outputs to drive separate external DMX universes. ONe for all my RGB spot light and one for DMX controllers (China stuff and Renards).

    But if I was making a dedicated effect, then I would probably like the smaller footprint of the E684.

    I think it boils down to what you are going to do with the E68x ..
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    Registered User mschell's Avatar
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    Default Re: SanDevices E682 vs E6804

    The E68x line has been around for awhile. It got upgraded from the small E680 to the E681 with 16 fused outputs and eventually up to 12 universes with a firmware update to the E682, with native DMX output. The E6804 is much more recent, so folks made due with an E682, even if they didn't need all the features.

    It is true that you can do dual power with the E6804, by having separate power injection, but the E681/2 made it easy to split the board in half as far as voltage with the two power inputs.

    Multiple output lines make it easy to do a fixture, like a grid, since power and data could be supplied to each strip independently without the need for power injection or long runs. Can you do it with an E6804, yes, but not as "cleanly".

    It's all a matter of perspective and history. Coming in today, I probably would do some things differently than I did, but there's also the learning curve and experience that I got along the way....
    Mark

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