Share this project


Share this project

A tiny Wi-Fi development board. Arduino + Wi-Fi + ARM Cortex M3  + wireless programming + REST API = awesome.
A tiny Wi-Fi development board. Arduino + Wi-Fi + ARM Cortex M3  + wireless programming + REST API = awesome.
A tiny Wi-Fi development board. Arduino + Wi-Fi + ARM Cortex M3 + wireless programming + REST API = awesome.
Created by
5,549 backers pledged $567,968 to help bring this project to life.

Use this space to cheer the creator along, and talk to your fellow backers.

Have a question?

Only backers can post comments. Log In
    1. Spark IO 3-time creator on

      Hey Don - happy to trade it in for a relay shield if you'd prefer, just shoot us an email at and we can take care of you there!

    2. Don Pattee

      Oh man, I finally got around to opening my Spark battery shield.

      What is this?

      A moustache?

      I thought the wrong thing was put in the bag, so I was annoyed, knowing I'd waited far too long to complain about a wrong product.

      Internet search shows that it is indeed a mustache battery connector. Nothing at all like what was shown during the Kickstarter.

      If I'd known this, I would have picked the relay shield and figured out my own battery solution.

    3. HyderGames on

      The unexpected happens! My Spark just arrive in my office in Brazil. Thank you guys! Problem solved!

    4. Spark IO 3-time creator on

      Lian looks like we got everything taken care of behind the scenes, thanks for raising the issue! In general we’re checking this comment board less frequently these days, so if you have comments, please email us at!

    5. Missing avatar

      alan on

      i cant connect my spark core with my iphone (it says no cores found) and the core doesnt blink when i connected it with powersource.

    6. Missing avatar

      Lian Chang on

      I have been patiently waiting for my battery shield to arrive. Stephanie from your Helpdesk asked me to wait since Feb and I waited. Now I can't get any email response out of you. What's going on? You are selling the shield on your web site, why have you failed to deliver mine and respond?

      Very disheartened to see a wonderful project now failing on the fundamental aspect of a business transaction.

    7. Spark IO 3-time creator on

      @Jorge Hope our email was helpful! Shoot us another message if you have any more questions.

    8. Jorge on

      Hi, I just received mail from customs saying that my cores (I pledged for the connection kit) are ready to be picked up (finally after months of being stuck there!). As others backers already pointed their are asking me for the content and value info.

      Knowing the declared value would be really helpful at this point, another important thing to know if there's any receipt or paper inside the shipped box that note the pledge value as they always open and search through the package content (that's awesome right?) for any hint on the real value.

    9. Spark IO 3-time creator on

      Thanks Charles, glad it was helpful!

    10. Missing avatar

      Charles Coward

      Enjoyed the video in update 22. It was useful.

    11. Amir Soltani on

      Thanks to Stephanie I finally got my battery shield. cheers...

    12. Missing avatar

      Mike Comley on

      I picked mine up from the office at my place today :D

      Very slick packaging, y'all! Now I just need to find some antennas.

    13. Robert Han on

      I got mine today even though I didn't respond correctly on my survey. Thank you Zach and the company. You guys are great, as an another creator, you guys are a great example. Unfortunately not all project creators are as responsible as you guys. - nfcTack creator

    14. Amir Soltani on

      Okay, I see many have received their battery shields. My tracking says it arrived at sorting center and will be distributed in 2 to 3 days, but that was Jan 14th. Is it supposed to take this long?

    15. Missing avatar

      Tuukka Heikura on

      If only the "whiskers" were drawn the other way that is..

    16. Missing avatar

      Tuukka Heikura on

      The battery shield took just one week in mail. However, the core took almost a month.

      Yes, the battery is an interesting design. I'm thinking that maybe a rubber band could hold it in place..

    17. Spark IO 3-time creator on

      @helder that's odd - you should have received two separate shipments and the battery shields were sent afterwards, but I suppose it's possible that the battery shield beat the other stuff to you. In any case, shoot an email to and we'll get you figured out there

    18. Missing avatar

      helder on

      hi i just receive the battery shield... interesting piece to say the least .... but i see many already spoke about this not so good for design well good design is only if is functional and esthetics are right but it seems kinda of just esthetics which one can argue of course... indeed just do not fit in many project everyone have...

      BUT my concern is i did receive the battery shield but i have nothing else, to connect with, unfortunately i did pledge for the vital connection 10 core plus shields... but WHERE IS MY STUFF?!

    19. Spark IO 3-time creator on

      @Tom If you'd like to replace the Battery Shield, email us at and we can take care of you there.

    20. Missing avatar

      Tom Bruinsma on

      This battery shield replacement is cute and useless. I made my design decisions based on the pictures you had provided. Now this annoying mustache doesn't fit into box! ARGH! When you indicate a shield, I expect to receive a shield not a dongle!

    21. Spark IO 3-time creator on

      Also, I should add - if you're unhappy with the Battery Shield and would like to trade it in for another Shield, we're happy to do so. Just email us at

    22. Spark IO 3-time creator on

      Keith - I hear all of your feedback, I had no intention of disregarding your comment, and I'm sorry if it came across that way. Your feedback is valuable, I apologize for not making the design change more transparent. That said, there's little that I can do now except apologize and let you know that we are taking your feedback and the feedback of other community members into account as we plan future products and accessories.

      We did discuss making an alternate version of the battery shield that was more like the original design, as you are not alone in your perspective. However we decided that due to the time it takes to design and spin up a new board, the best thing we could do would be to point backers to products from Adafruit and SparkFun that provide the functionality that you're looking for.

    23. Keith Rome on

      You cannot and should not expect people here to know about this design change simply because it was discussed briefly in the comments of a random update or in a single forum thread on your dedicated forum website.

      You've made a design change without informing us. Not a small change either. Whether you thought you were doing it for noble reasons is irrelevant - we deserved to be told about it. And we also do not deserve to have those complaints dismissed out-of-hand when we give critical feedback about it. *YOU* may feel like the stackable shield is unwieldy, but that's exactly what we expected. It is what we signed up for and said - "hey, yeah, I could use that". If stack height were a problem for us then we wouldn't be interested in a vertical shield-based system in the first place, now would we?

      I feel as though I've essentially spent $18 (half of the difference between the $39 and $75 pledges) for something that - I'm sorry to say - is effectively useless. I paid less than that for usb lipo charger boards from Adafruit that are many times more useful. They don't have USB pass-through, but you know they *do* have mounting holes and a smaller (rectangular!) footprint. The only "mounting hardware" that will work with these moustache chargers is duct tape.

      I was quite pleased with how things were being handled in this project until now. This puts a very sour taste in my mouth, and to be honest the flippant handling of this (what would otherwise be a very benign issue) is extremely off-putting. I'm tempted to just list the spark kit on ebay and wash my hands of it. Who knows if the next revision of the core boards will come shaped like a platypus because it looked cute?

    24. Spark IO 3-time creator on

      @Keith @Chuckles there has also been some discussion about the battery shield on our forums here:

      As I said in both places, the design as in fact chosen because in our prototypes we've found that its far more practical than a stackable shield because the stackable shield creates a very tall and unwieldy shape. The re-design was intended to be an improvement, and although it's the most visible design change since the KS campaign, in fact all of our products, from the Core to all of the Shields and Kits, were improved upon after the campaign based on our own testing and the feedback we received. Clearly this is a design choice that was more controversial than the other improvements we've made, but we are making design improvements constantly and appreciate the feedback throughout.

    25. Missing avatar

      Chuckles on

      @keithrome FYI - The moustache shaped battery board was briefly discussed following Update #16, here:…

    26. Keith Rome on

      I just received the delayed "battery shield" (got my spark core and "shield shield" a week or two ago). I'm confused.

      The moustache shape of the board is cute, but this is nothing at all like what we were told it would be. In fact, this isn't a "shield" at all - it's a moustache that you plug in to the USB port, with no pin headers and no mounting holes. There is nothing Spark-specific about this - it could have been sold on its own for any dev board with a micro-usb port and extremely low power needs (supposing such boards also had a reason for attaching a moustache?).

      The only thing that has even mentioned the design of this part is a single photo on the main project info page:… and that photo looks like what one might reasonably expect for a "battery shield" given no other guidance. But that is certainly nothing like this moustache-shaped charger that was actually sent.

      When did you decide to change (drastically) the design on this component, and more importantly - why didn't you tell us about it before asking us to finalize our selections?

    27. Missing avatar

      Tuukka Heikura on

      My "Android" phone is not supported by Google. Waiting for either a native app for Jolla or one that does not require Google Play, because I can't install it on this thing yet.. This phone can run Android apps, just not Google Play at least until Google decides to flip a switch or something.

    28. Andrew - Armikrog Army on

      Hey, @Spark, why not answering email about package searching since 18th jan? :)

    29. Spark IO 3-time creator on

      @alan Absolutely! Fastest way to get help is on our forum site ( but also feel free to email us at too

    30. Missing avatar

      alan on

      when i power the core on the light was blinking green, i tried to connected it with my iPhone but the phone can't find the core. can you help? thanks

    31. Spark IO 3-time creator on

      Hi @Tuan, can you send us some photos of your Maker Kit so we can make sure there wasn't an error when it was packaged? Please send to and we'll get you sorted! While the kit is definitely modeled on that Spark Fun kit there are some differences such as type of breadboard included. All of the details on what our kit includes can be found here:

    32. Missing avatar

      Ticanaus on

      Hi, any one order a maker kit and have received it ? Pass post said it was model after this kit but with a spark core. I don't even have a bread board on my kit and alot of component base on that kit is missing. What has everyone received ?

    33. Luis Jaramillo on

      Finally, mine arrived minutes ago!

    34. Spark IO 3-time creator on

      @alan absolutely, just like your computer or smartphone!

      @Mau you should have received tracking information that will let you know the progress of the package? If you're not seeing any progress on the shipping company's site, try the same tracking number on your own country's postal service's site.

    35. Mau Vela on

      Please any news about my core :( I didn't recived yet, :/ please please...

    36. Missing avatar

      alan on

      can i connect my core through wifi if there is more than one wifi around me?

    37. Spark IO 3-time creator on

      @Sorry Jereon, we didn't have any control or really any knowledge over how things were marked for customs, our distributor took care of all that.

      @Jeff SmartThings integration is still planned, at this point it's actually possible to do it yourself with their REST interface!

      @Everyone if you haven't gotten your rewards yet, try your tracking number in your own country's postal service's tracking system (i.e. in the US, it would be USPS). Once the package crosses over to your own country, it gets passed from the international carriers (Singapore Post, HK Post, Netherlands Post, Swiss Post, etc.) to your own country's postal service, but they generally use the same tracking numbers, so you may get more up to date information there.

      Also @everyone thanks for the compliments, hope you're all enjoying your Spark Cores!

    38. Missing avatar

      Tuukka Heikura on

      I have also received my core now. Nicely packaged, lots of bubble wrap.

    39. Missing avatar

      Tuukka Heikura on

      @Jeroen: That's always annoying, but customs still want to know what you paid for it so that all due taxes and customs fees are covered and they might even ask for a receipt to prove it. It's the same here. My package at least is waiting at the post office for me to sign it.

    40. Jeroen on

      The box appears to be marked as 'gift parcel' and $ 13.00 of total value (PCB) but I didn't know that. So when customs sent me a letter I had to let them know what the contents were and what the value was, I did as they asked. Would I have known what was stated on the box I could just have said the same and it would have saved me the € 55,63 (= $ 75,-) customs fee…

    41. Missing avatar

      Tuukka Heikura on

      Hah, the Swiss Post tracking site now says the packet has been handed to customs yesterday. It took them 3.5 weeks and there were no status updates for that time.

    42. Jeroen on

      Crap € 55,63 customs fee... Thanks Dutch customs... :)

    43. Missing avatar

      Jeff Lester on

      what's the status with smartthings integration?

    44. Mike Pucher on

      I got my cores this morning... I was very eagerly awaiting their arrival and I would have been happy to receive them bubble wrapped in an anti-static baggie. Instead, it was like Christmas morning to see the awesome packaging job and wonderful presentation experience of opening the box! It put a huge smile on my face. I can't wait to put them to good use.

      Congrats on your successful Kickstarter and your awesome end product!

    45. Amir Soltani on

      I've just received mine in Cambridge Univ. UK. It is a beautiful card, sleek packaging too. Many thanks for sending it, I'm missing the battery shield as well but I think they will be sending them after revisions.

    46. Chan S. on

      I am missing 2 cores. Only received 3 of the 5... Plus instead of the Battery Shield, I was given a second Shield Shield...

    47. Evaristo Ramos on

      Hehe opps, its all there :) there is one inside of the maker's kit, this is soo awesome I am going to show it off to everyone!!!

    48. Evaristo Ramos on

      Okay I finished my inventory and I seem to be missing one spark core :(

    49. Evaristo Ramos on

      Woot I received my package yesterday (01/11/2014) In Houston, Texas. I just got home today and was very pleased when I opened it!! I love the notebook it will go perfect my robotic designs!!


    50. Missing avatar

      Tuukka Heikura on

      Ok, so it actually can take a month after "departure" until further updates. I was confused because the tracker for Swiss Post makes it seem like they don't even know where the package is supposed to be delivered to. It just states a "foreign country". I have never had to deal with Swiss Post before.

Show older comments