I want to put some electronics inside of a surfboard. What would be the best way of doing this?

Just cutting a hole, put electronics in and then cover with like foam, epoxy and glass fibre?

  • 2
    I'd suggest waterproofing the electronics first (eg in a waterproof box) and then as you suggest. I'll migrate to Arts & Crafts though as it isn't really an outdoors question.
    – Rory Alsop
    Commented Aug 7, 2016 at 16:58
  • 3
    @Rory As an aspiring windsurfer, I argue this question must be on topic in the great outdoors, just as on topic as any questions about electronics used exclusively for outdoor sports, such as GPS navigation devices for canoes/kayaks, elevation watches, etc. How to patch your canoe or paddle board, or install a keel on it's bottom would be on topic here, I feel that this is as well.
    – ShemSeger
    Commented Aug 8, 2016 at 5:09
  • 2
    @lightvvind Please be more specific, what exactly is it you wish to mount inside your board and why? Does it need to be charged/have batteries replaced? Your question needs more details.
    – ShemSeger
    Commented Aug 8, 2016 at 5:11
  • @ShemSeger I want to put some batteries and an esc inside and a motor on the outside
    – Lightvvind
    Commented Aug 8, 2016 at 6:03
  • 2
    Oh... well in that case, perhaps this question isn't well suited for the great outdoors as I had originally thought. If you were trying to install a Spot GPS, or rescue beacon, or even an iPad for navigation then that would be cool, but putting a motor on anything kind of ruins the essence of being in the great outdoors in my opinion. Granted, an electric motor is the greener option with motors.
    – ShemSeger
    Commented Aug 8, 2016 at 16:43

2 Answers 2


You'd install it basically the same way you'd install fin boxes and foot strap inserts (youtube example), surfboards aren't much more than a big block of styrofoam wrapped in fibreglass and resin. Simply put, you need to cut through the fibreglass, and hollow out a spot to put your electronics, and seal it back over with fibreglass and epoxy, then do whatever finishing work is required. How or where you install your electronics however may depend on what it's being used for, and whether it needs to be wired so it can be recharged, or accessible so it can be retrieved. There are shark repellant devices that install on the base of your board behind the fins that interfere with a sharks senses for example that need to be charged before each use, and have a transmitter wire that runs the length of the base of the board:

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Anything you install on your board will follow the same basic steps as installing any other insert, but there may be special considerations depending on what you're installing.


For installing batteries to power an electric motor, weight may be an issue, you're going to need to install the batteries in such a way that they are distributed through the board while keeping it balanced. If they are a couple of large batteries that you're putting on a wave board, then I'd install them towards the rear directly under the centre line of the board where you will be standing so the board will still be maneuverable. If you're using multiple smaller batteries on a paddle board, then I'd wire them in a series and probably do two lines, one down either side, this would potentially make the board more stable. Your board size and use will have some influence over where and how you modify it.


Despite what others have said, your not going to want to 'seal' electronics into the board with fiberglass and resin. How would you access it if it breaks down? What you need is to encase the device with a means of access. For instance, a screw in cap with O-ring. The encasement gets glassed into the board with the cap exposed. Think leash cup with a waterproof cap. Any shape would work, but your going to want to make it as shallow as possible or you risk compromising the structural integrity of the board. I highly suggest you contact a local board builder to work with early on in the process. They'll have invaluable suggestions on how to design the enclosure and distribute weight.

  • Contacting a board builder is a really good suggestion, I didn't think of that. Thanks!
    – Lightvvind
    Commented Aug 9, 2016 at 12:14
  • If you have the money to build a new board, a local shaper will most likely be glad to work with you. Custom shapes generally cost nothing extra. The extra glassing costs will probably end up around $50-60 depending on what the device ends up looking like and whether you go with polyester or epoxy.
    – Tanner
    Commented Aug 9, 2016 at 12:21

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