# Building the world’s second consumer deep sea drop cam

**URL:** <https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516>\
**Category:** Build/Make\
**Created:** [March 2, 2019, 5:13pm UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516 "2019-03-02T17:13:51Z")\
**Posts on this page:** 10\
**Page:** 3

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**Author:** ![rjehangir](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/rjehangir/32/671_2.png) [@rjehangir](https://discuss.bluerobotics.com/u/rjehangir)\
**Post date:** [October 8, 2019, 1:09pm UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/41 "2019-10-08T13:09:39Z")

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Nice work, @Paucam! This is a really awesome video and overview of your adventure! Thanks for sharing here.

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**Author:** ![emiller](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/emiller/32/14726_2.png) [@emiller](https://discuss.bluerobotics.com/u/emiller)\
**Post date:** [October 8, 2019, 2:27pm UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/42 "2019-10-08T14:27:42Z")

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This is sweet, @Paucam! It’s been super fun to watch your project take life and we can’t wait for future updates 🕶

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**Author:** ![UnderseaTV](https://avatars.discourse-cdn.com/v4/letter/u/ecccb3/32.png) [@UnderseaTV](https://discuss.bluerobotics.com/u/UnderseaTV)\
**Post date:** [October 18, 2019, 10:33pm UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/43 "2019-10-18T22:33:11Z")

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Very cool project! I’m still hoping to put together a drop cam of my own, so I’ll be keeping an eye out for the GitHub.

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**Author:** ![Paucam](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/paucam/32/4253_2.png) [@Paucam](https://discuss.bluerobotics.com/u/Paucam)\
**Post date:** [October 19, 2019, 1:39am UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/44 "2019-10-19T01:39:21Z")

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Thank you! We will let you know when it is posted!

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**Author:** ![Paucam](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/paucam/32/4253_2.png) [@Paucam](https://discuss.bluerobotics.com/u/Paucam)\
**Post date:** [October 19, 2019, 1:41am UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/45 "2019-10-19T01:41:10Z")

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Hi Ivan, yes, we conducted our tests with the drop cam tied to a line, and also have galvanic time releases as a backup plan!

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**Author:** ![Paucam](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/paucam/32/4253_2.png) [@Paucam](https://discuss.bluerobotics.com/u/Paucam)\
**Post date:** [November 15, 2022, 8:54pm UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/46 "2022-11-15T20:54:58Z")

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Dear @rjehangir and all, after three years since my last post here (I was pursuing other projects), I am happy to announce that I published the assembly guide and software to build the dropcam (called blue\_eye) on GitHub. With this, anyone can contribute to the global movement of citizen science and ocean exploration. And the burnwire took a lot of work but now works fine!

> **[GitHub - PauAntaBio/deep-sea-drop-cam: Low cost device to explore the deep...](https://github.com/PauAntaBio/deep-sea-drop-cam)**
>
> Low cost device to explore the deep sea up to 500 meters of depth - GitHub - PauAntaBio/deep-sea-drop-cam: Low cost device to explore the deep sea up to 500 meters of depth

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**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\
**Post date:** [November 20, 2022, 10:57pm UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/47 "2022-11-20T22:57:04Z")

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Hi @Paucam,

It’s great to see an update on this project - thanks for sharing, and great work on all your development and testing so far! 😃

Some comments, questions, and suggestions for potential future improvements:

- With our new [Locking Enclosures](https://bluerobotics.com/product-category/watertight-enclosures/locking-series/) (which you mention in the assembly guide) and [WetLink Penetrators](https://bluerobotics.com/store/cables-connectors/penetrators/wlp-vp/) (which don’t seem to be mentioned), it could indeed achieve depths up to 500m 😃
  - potted penetrators [may not consistently maintain a seal](https://discuss.bluerobotics.com/t/depth-rating-for-potted-cable-penetrator/12696/2) all the way to 500m - it depends a fair amount on the potting conditions
  - note that it may be worth epoxy-coating (potting) the exposed end of the cable jacket (and/or use cable with a water-blocking filler) and the ends of the wires, to avoid the high pressure water pushing in past the insulation
    - using a water-blocked connector could also resolve this issue, although is more expensive to do

  - to get beyond 500m would require a thicker and/or smaller dome (perhaps the electronics could fit into a 3" enclosure?), as well as new lights (at some point we’ll be releasing a new iteration of our Lumens, which should be able to go deeper)

- It’s really cool to have a reference for a tested burnwire setup! 😃
  - I noticed that the guide example mentions it should burn for ~1 minute (section 4.16), but the code seems to tell it to burn for ~10 minutes - are these both just examples that depend on the wire being used, or were they supposed to both be the same?
    - if an external pressure sensor or an accelerometer were integrated, it may be possible to “burn” until a consistent lifting starts occurring, with the timeout used as a backup to avoid excessively running down the battery if it doesn’t seem to be working properly

  - I’m not sure how much current the burnwire setup uses when switched on
    - if it’s significant, it may be worth providing a close or even direct connection to the battery terminals, to avoid burning out the breadboard traces

  - for additional robustness, it may be worth covering the anode in [moldable sealant](https://bluerobotics.com/store/cables-connectors/tools/tool-coax-seal-0-5in-60in-r1-rp/), as electrical tape alone could still fail to keep the water out and end up corroding things

- The “blue\_eye” name is apt and interesting, but may be a bit confusing because there’s an ROV company called [Blueye](https://www.blueyerobotics.com), so it could incidentally seem like this project is affiliated with them
- The photos and wiring layout diagrams in the assembly guide should be useful for replicating your setup 🙂
  - it may also be worth creating an actual schematic, to better share the logical intent behind the circuit connections, and help people to understand which connections are being made and why
    - there are free softwares that can make electrical schematics - Kicad is one for electronics design, and there are also a variety of online options, including just general diagram creation software that includes electrical symbols

- The usage guide refers to our [Switch](https://bluerobotics.com/store/comm-control-power/switch/switch-10-5a-r1/) as an “electronic switch”, but I would personally consider it (and the reed switch) to be [electrical switches](https://docs.bluerobotics.com/ardusub-zola/hardware/additional/electrical-switch/) (because they are not electronically actuated), while your relay would be an example of an [electronic switch](https://docs.bluerobotics.com/ardusub-zola/hardware/additional/electronic-switches/) 🙂
- Given the two Lumen lights are sharing the same signal, it may be worth daisy-chaining them (or just getting a [pre-connected set](https://bluerobotics.com/store/thrusters/lights/lumen-sets-r2-rp/)), to save a penetrator spot in the enclosure

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**Author:** ![Paucam](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/paucam/32/4253_2.png) [@Paucam](https://discuss.bluerobotics.com/u/Paucam)\
**Post date:** [November 22, 2022, 11:22pm UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/48 "2022-11-22T23:22:52Z")

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Dear Eliot, thank you so much for your feedback, it is terrific and you touch on several details that are critical for the device and also details to improve/correct the assembly guide. Will work on all them.

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**Author:** ![rjehangir](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/rjehangir/32/671_2.png) [@rjehangir](https://discuss.bluerobotics.com/u/rjehangir)\
**Post date:** [November 29, 2022, 2:03pm UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/49 "2022-11-29T14:03:13Z")

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@Paucam Awesome work! Thanks for sharing this and documenting it so clearly.

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**Author:** ![tbolton](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tbolton/32/16882_2.png) [@tbolton](https://discuss.bluerobotics.com/u/tbolton)\
**Post date:** [January 13, 2023, 12:12am UTC](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516/50 "2023-01-13T00:12:05Z")

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Hi @Paucam! We’d love to feature this on our social media - is there anything you’d like us to highlight? Thank you in advance!  
-Taylor  
Blue Robotics  
Customer Success and Subsea Social

[Previous page](https://discuss.bluerobotics.com/t/building-the-world-s-second-consumer-deep-sea-drop-cam/4516.md?page=2)
