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A smart, compact power supply designed to power anything, anywhere
A smart, compact power supply designed to power anything, anywhere
479 backers pledged $92,154 to help bring this project to life.

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    1. Missing avatar

      Jason Wiggins on

      Hi Caleb,
      I realise it's been a while, but I only had the first chance to use my hydra for the first time today since purchase. I had issues connecting via Bluetooth on my iPhone. Then after looking at your video, I discovered that the Bluetooth expansion is external to the unit. I pledged for it, but never received it. Can you please look at my pledge and check for me please? I'd really like to have Bluetooth as expected.
      Thanks and regards, Jason

    2. Caleb Chamberlain Creator on


      The iOS zip file actually contains the Hydra's firmware source as well (for Atmel Studio).

    3. Missing avatar

      Stevie on

      Hi Caleb, could you also release the source code of firmware on the Hydra? I would like to try to make a couple of fixes for bugs. Thanks!

    4. fmotta on

      @Caleb: I sent you a message via KS.
      I used my Hydra once shortly after it arrived. I put it into an anti-static bag and pulled it out today and it does not connect via USB/Serial (OSX, Linux, nor Windows7). I cannot find any information on the device so I can determine if I am using it correctly nor what is going wrong. Also, there are no docs, code, schematics for me to maintain this myself.

      I hate to be an annoyance, but; I did expect the life of this to be greater than one use and I feel that support is needed - even if it is publishing the design to public domain for us to self-maintain it.

      Please provide support or complete product design files really soon!

    5. Erik Berls on

      CH Robotics is listing this as discontinued, friends of mine want some! Will this ever come back?

    6. Brett James on

      Any update on the Android App? I'm stuck to needing to plug it into the pc and interface via the awkward windows app.

    7. Alexander Woo on

      what ever happened to the android app

    8. Missing avatar

      edwin himawan on

      Is the bluetooth expansion board is ready for purchase yet?

    9. Brett James on

      Finally have some time to use it :)

      Can I confirm with the power supply included that:
      Red is active, and Black is ground?

    10. Missing avatar

      Stevie on

      @Frank de Haan: Ususally for the customs it is fine to show them the Kickstarter page and your account statement which shows the sum going to Kickstarter / Amazon. Worked for me in several cases.

    11. Ming Chonlanotr on

      I still don't get my reward. Please help

    12. Wai Chan on

      I finally picked up my Hydra parcel. I found the red Hydra and AC adapter with some cables and letter. But I did not find the Bluetooth 4.0 expansion board in the package, Please check your record for my pledge. Thank you!

    13. Missing avatar

      Chris Rhoades on

      Any timeline on the Android version of the software? I know BT4.0 is pretty new on Android phones but I can hope :)

    14. Missing avatar

      Aragon Gouveia on

      I received my Hydra recently. Happy so far - thanks a lot Caleb. My only criticism is that it would have been nice to have the electrical specifications neatly printed on the casing, as in:…

    15. Missing avatar

      Gary Chang on

      When could we get the app from app store?(iPhone)

    16. Missing avatar

      Frank de Haan on

      Hi Caleb,
      I need a invoice and a delivery note for my Hydra.
      The german customs house sent me a note because there was nothing visible on the outside of the package.
      I pledged for the Hydra with the bluetooth board and I can't wait to get my hands on it. ;-)

    17. Caleb Chamberlain Creator on

      James, you will be happy to know that your Hydra is shipping tomorrow. :-D

    18. James Bailey

      At least once a week I work on a project where I'm like "damnit, where's my Hydra". Hard not to be a little frustrated as it was due in April, and I just blew something up (my own stupidity) by trying to improvise a Hydra. Caleb I'm holding you accountable for letting the smoke out of my UCC37321P, may it weigh heavily on your conscience ;)

    19. Caleb Chamberlain Creator on

      Thanks, Chris! The feedback is very much appreciated.

    20. Chris on

      I just hooked up my Hydra tonight and have to say it is pretty friggin amazing. This is one slick product you have here. I really hope this sells well for you. /thumbsup

    21. Caleb Chamberlain Creator on

      Hi Larry,

      They haven't all shipped. We had some problems with enclosures and are waiting for the last batch of new enclosures to come from the anodizer. It'll definitely happen next week.

    22. Missing avatar

      larry d jamner on

      Hi Caleb,
      Still awaiting word on my Hydra with bluetooth expansion board(^-^) The Oct 31 update indicated all would be shipped by the following week -was that the case? Thanks in advance for your reply. Congrats on the Project. Larry

    23. Missing avatar

      Tavares Ford on

      Any update on the bluetooth expansion boards?

    24. Caleb Chamberlain Creator on

      Our first priority is to get the rest of the preorders shipped, which means working out the kinks in the bluetooth expansion boards and finalizing the iPhone and Android software. We'll look into the OS X version of the control software after that. In the mean-time, you can access the basic functionality of the Hydra from a serial terminal.

    25. TrippyLighting on

      I've received my Blue Hydra and so far it looks nice. I am using a mac and attempting to use the driver and Hydra program on a VMware installation of win Vista has resulted in two BSODs.
      Is there a timeline as to when we will be able to use the Smart Power Supply Control Software natively on OSX ?

    26. Robert D. Matthews on

      Any update on the Bluetooth modules?

      I'd love to have my Hydra to use...

    27. Caleb Chamberlain Creator on

      Glenn - I'm not familiar with KCL experiments, but note that you cannot connect the Hydra outputs in series - their grounds are tied together.

    28. Missing avatar

      Mario Leone on

      Hi Caleb. My black Hydra landed in my hands yesterday. I'm in Italy. I had to pay about $35 in vat and taxes. I'm VERY happy for the product. thanks. Mario

    29. Missing avatar

      Glenn Lopez on

      Hi Caleb.. I just started Electrical Engineering and I'm wondering if it was possible to use the Hydra for KCL experiments. I've been given the impression in my lectures that having 2 or more different voltage sources connected in series is a bad thing, perhaps I've misinterpreted the forewarning but in anycase, is there anything I need to know before I put 2 or 3 voltage sources in my circuit using the Hydra?

    30. Missing avatar

      Jasper Stolte

      Hi Caleb, mine just arrived in the Netherlands. Congratulations on finishing this project, it must at times have seemed an endless journey for you.

      It's even smaller than I imagined it. Only one word applies: AWESOME!
      Look forward to using it in my next project.

    31. Missing avatar

      Timothy Giles on

      Caleb. Hi from Sweden, wanted to let you know mine arrived, perfect condition. 70 dollars (440SEK) of import tax (darn government). Used it for the first time today. Fantastic case, love the material, finish looks and feels bomb proof.

      The software works well, great to see the videos online. Downloaded the instructions, well written and complete.

      Good luck for the future, thanks for you and your colleagues hard work.

    32. Brad on

      I have now used it, and it's... BADASS! I used it for a custom photo box, I have it controlling 3 different lights, LOVE IT! PWM would of been even better though.

    33. Brad on

      I received mine, but haven't had time to even unpack the box, but I appreciate it and it looks great!

    34. Lee R. Copp
      on Hydra showed up yesterday and works great. I have already put it to work powering my project: "The Phone Cop"


    35. Missing avatar

      hashish on

      Any one know of some low profile banana plugs that would work well with this?

    36. Caleb Chamberlain Creator on

      Hi Nick,

      There will be once all the bluetooth stuff is ready (we aren't quite there yet). The bluetooth expansion board will be available for purchase from

    37. Nick Kirsch on


      I've already received my Hydra and it looks so cool... Unfortunately I don't have a windows box. Is there a way to just purchase the Bluetooth/Wifi module so I can use an iOS/Android device?


    38. Caleb Chamberlain Creator on

      Ah, sorry. I still need to get the rest of the documentation finished. The baud rate is 14400.

    39. Gui Ambros on

      Thanks for such a nice product, Caleb. Just got mine, and it's working flawlessly.

      A few months ago you mentioned it'd be possible to monitor status via the serial connection. What is the speed of the connection? I tried 38400 (and everything from 9600 to 115200), 8N1, no control flow, and I only get garbage. Seems it is outputting something, but I'm not being able to read it properly.

    40. Caleb Chamberlain Creator on

      Brett, we don't have any adapters for the AC-DC converters that come with the Hydra, nor do we have an alternative version that is compatible with different types of outlets and voltages. Backers with different types of outlets will need to use a converter.

    41. Caleb Chamberlain Creator on

      Fabian, send me a message to change your shipping address if you haven't already.

    42. Brett James on

      Being an aussie, the power adaptor will not be compatible for me, without an adaptor for Australia. Are these kind of things standard? I'd prefer to slot out the US based one, and replace with the AU version, rather than a bulky international travel adapter is that is possible.

    43. Fabian on

      Will have a chance to change my shipping address if I recently moved?

    44. Caleb Chamberlain Creator on

      Yes, definitely. I'm not completely sure on the timeline since right now we are focused on getting everything else out the door, but once we are caught up we'll be looking more seriously into it.

    45. Keith Rome on

      Caleb - I was wondering if you were still planning on producing a WiFi control module? I know it was tied to a $100k stretch goal, but wasn't sure if that product was still on the table as a future add-on even if you didn't reach the funding goal.

    46. Caleb Chamberlain Creator on

      Thanks for pointing that out, Keith. I'll change the wording so that it is more clear. I'll also change the expected ship date to be more realistic.

    47. Keith Rome on

      The wording on the website would lead me to think that it does include Bluetooth. It says so twice in the description, and I don't see anything that would imply there exists a non-Bluetooth Hydra (or an add-on Bluetooth module).

      It also says (twice) that they will ship in July. The pricing appears to have been updated recently though - it shows $198 to me.

    48. Caleb Chamberlain Creator on

      Hi Hashish,

      The price on our website was a pre-order price like what was on Kickstarter. In case you might feel slighted, note that the price on our website did not include shipping, so the Kickstarter preorder and the preorder from our website would have worked out to be the same.

      The Bluetooth board does NOT include bluetooth communication at the $179.00 price point.

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