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iSpindel Digital Hydrometer

Discussion in 'Electronics, Hardware & Software' started by Mattrox, 11/5/17.

 

  1. Korev

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    Posted 10/4/18
    So I spent some time reloading the BPL and iSpindel but with no luck so I lodged an issue on Github

    https://github.com/vitotai/BrewPiLess/issues/82

    Based on the feedback I changed the iSpindel version 5.1.2 from the BPL extras and have modified BPL 2.7 with 20 instead of 12 per below
    Check ExternalData.h, find processJSON()
    bool processJSON(char data[],size_t length, bool authenticated, uint8_t& error) { const int BUFFER_SIZE = JSON_OBJECT_SIZE(12);

    I am testing how stable this is by monitoring the iSpindel with Putty and it has been updating on BPL every 20" for 45 minutes so far - fingers crossed Update still working after 4 hours

    I would be interested to know what versions of BPL and iSpindel others are using?

    Peter
     
    Last edited: 10/4/18
  2. Korev

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    Posted 10/4/18
    Died in the proverbial after 7.5 hours and successfully sending 649 times.

    Recharging the iSpindel and will run again overnight

    P
     
  3. Fro-Daddy

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    Posted 24/4/18
    I'm thinking about making a couple of these and from reading in here DIY seems to be the way to go for cost and wireless charging.
    Is the parts list that was mentioned early on in this thread still the best way to go? I read a few people upgrading/changing things but it started to get a bit confusing.

    One other thing I'm still unsure about is how you read the data. Can I just use my laptop and read it live over WiFi? Or do I need the BrewPi?
     
  4. Paiakan

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    Posted 24/4/18
    Things got easier.

    Use this Aliexpress shop list but replace the 470 ohm resistor for a BAT43 Schottky Diode.
    For the board, buy this one: https://pcbs.io/board/cc3e8a392dc8a9521a15ef98ed3e7abace9f9888af7625a097aafc75fa2716fc
    For the PET tube, use this one: https://www.ebay.com.au/itm/5-pcs-X...354252?hash=item1ed26ca48c:g:rnQAAOSwv0tU4JMN
    Use this drawer to make things easier, too: https://github.com/universam1/iSpindel/tree/master/drawer/mwx-Edition
    [​IMG]

    You can also use a wireless charger, but is optional: https://www.aliexpress.com/item/A-Q...32724345585.html?spm=a2g0s.9042311.0.0.oyw8Rh

    And NO, you don't have to build a BrewPi to read it's measurements. The iSpindel itself sends data to a website (usually Ubidots) so you can check it in realtime.
    [​IMG]
     
    Last edited: 25/4/18
  5. Fro-Daddy

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    Posted 25/4/18
    Is there a link missing for the shop list?
    I might start ordering parts tonight, thanks!
     
  6. Paiakan

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    Posted 25/4/18
    I edited the post. Now it's complete.
     
  7. Mister clark

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    Posted 26/4/18
    Thanks for posting the shopping list, that will make things easier!

    I've just finished reading the thread so apologies if this is a silly question but regarding the sled, did you use the same guy others have referenced to do the 3D printing for you?

    Thanks in advance.
     
  8. Paiakan

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    Posted 26/4/18
    No, I didn't.

    Actually I don't even live in Australia. ;)
     
  9. tateg

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    Posted 15/5/18
  10. BrewYaute74

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    Posted 2/6/18
    Hi guys,

    I'm struggling to make my temp sensor work. It is showing -127°c on the web page.

    Is anyone have a solution for that ? I did not removed the diodes though.

    Thank you all
     
  11. Paiakan

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    Posted 4/6/18
    I had this problem twice. It was a bad soldering problem.
     
  12. fdsaasdf

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    Posted 5/6/18
    I bought some parts last year for this but was otherwise distracted. I now have some spare time, components and the PET enclosures. Is there an updated ideal parts/build list since the last one @Paiakan posted?
     
  13. Nj11

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    Posted 2/7/18
    I bought extras of everything except the 3d printed sled, enough to make about 5 or so iSpindels. If anyone is keen I am selling for what the parts cost me, $28 plus shipping if required.
    Most stuff bought off aliexpress.
    Includes:
    PET Bottle
    PCB
    Wemos d1 mini
    GYRO
    TP4056
    Battery (NCR18650B)
    Switch
    Resistors+diode
    DS18B20
     
    Thomas Wood likes this.
  14. owynp

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    Posted 2/7/18
    I'd be interested - can you PM me and we can arrange payment? Many thanks in advance
     
  15. gabbawocky

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    Posted 3/7/18
    I'd be interested too.
     
  16. Thomas Wood

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    Posted 4/7/18
    Yeh if there are easy enough instructions to do this I would be keen as well!
     
  17. phul

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    Posted 5/7/18
     
  18. Weizenbonk

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    Posted 20/7/18
    Yeah, nah.
    I have made my first one of these and it is working a treat. I haven't tried it in my kegmenter to see what the signal is like inside a stainless vessel, as I have a brew finishing off. Signal is ok in a fermenter fridge about 20m from the access point and a few through walls. Pretty amazing for a little device! I am thinking I will probably need a repeater close by....luckily I have a spare ESP8266 for this project - https://hackaday.com/2017/12/25/the-wifi-repeater-you-probably-have-on-your-bench/
    Amazing piece of tech - loving it. I found the guide on this page really helpful for the soldering work - http://www.3d-mechatronics.de/en/ispindel-diy-set_151.html (see Soldering Guide - Downlod) - the only issue I had was that I used a BAT43 as per current recommendations and it has polarity. Of course I put it in the wrong way first up (cathode/band to D0 is correct).
    I bought and waited for enough parts for 4 units, but I only need 2. So I have parts for 2 complete units which I am looking sell, either as parts or a completed unit if you don't fancy the soldering. PM me if you are interested.
    Next project - Keg level monitoring in my Keezer using an ESP8266 and 5 load cells...
     
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  19. kaljade

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    Posted 21/7/18
    Hi there,

    Thanks for posting the link to the soldering guide! I've also decided to go down the diode path and already ordered all my parts, I'm just wordering if you could post a pic of the correct diode placement as I'm not too sure looking at the guide?

    Appreciate your time!

    Cheers,

    Kal
     
  20. eviltabouleh

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    Posted 22/7/18
    What's the going rate for getting the sled printed.
    I have a 3D printer and a supply of filament so I can print some. Who wants to swap for random parts.?
    You scratch mine I'll scratch yours
     

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