Hi Bristlemouth Community
Some time ago having so called one beer too much I’ve promised that I will make the “ocean project” I was think about Bristlemouth compatible. Well, 4 times more time that I’ve expected later there she is:
Still needs a tweak here and there but if someone would have a spare twisted pair cable it would be great to give it a more practical try.
Nice work! Tell us more!!
Yeh, came out looking not that bad.
Probably rather basic thing and similar to Bristlemouth Mote. The board in the middle is 10Base-T1L header based on the same IC the Bristlemouth Mote uses, therefore it also has two ports and it should be possible to chain the nodes. The board on the top is the power over data line extension, has a current sensor, 5V DC/DC converter to power the RPi and gives “VBUS” out.
It can probably simplify building things like underwater cameras, acoustics, etc. for the price of being more power hungry than Spotter and Bristlemouth Mote.
Sweet! I’m not 100% sure, but I think maybe you need one of these cables:
What software will run it? Do you have a driver library for that 10Base-T1L board?
EDIT: NOPE! Wrong cable! See Uma’s response below.
Hi Luk,
This looks pretty cool! I see molex -esque connectors on the top board placed vertically and the same part placed horizontally on the middle board.
Looking at the 2-conductor connectors from this angle from the photo makes me doubt if the part Zach suggested might fit into the parts placed on your boards. Maybe I can help suggesting a different cable if you could share the part number of the part you have used.
@umakat: Yes, those are 43650-ish Molex micro fit connectors, horizontal and vertical. I think the one which Zach mentioned are used in BM Mote, which may be better if it would not fit here because I think the polarities are conveniently reversed.
I think I eventually figured out how to assembly those Molex plugs, or at least seems that every 10 tries I’m able to get one plug done right (I think I start to understand Molex’s business model).
@zachary: about the software, it’s probably the time when I should start to consider myself old and stubborn but all the tests I’ve made so far were done on a good old Debian (not to confuse with, I believe, Debian-based Raspberry Pi OS).
I think that’s actually the most important part, because it works almost out of the box with a regular Linux, it should be possible to get two of those, connect an external wifi adapter/antenna, battery and solar panels on one end, a camera/hydrophone on the other and if you are in the wifi range you can have an underwater live video/audio stream running in one weekend.
Yep, Molex be like that!
I think this cable might fit into the 43650 mricrofit connector better - 2147512023 Molex | Cable Assemblies | DigiKey.
@umakat: Yes, the plug looks like on the cable I’ve ended up testing it with. I’m not sure how long it was, my guess would probably be around 150ft.
Do you maybe know someone who may be interested in testing this kind of thing in a more practical setup?
