MNemo • Cave Survey Data Acquisition
Do you want to do fast and accurate cave survey ?
While you swim in the cave and you want to do cave survey data acquisition, simply clip MNemo on the line. Stabilize a couple of second, swim at normal pace until the next tie-off. Stabilize again a couple of seconds, unclip and re-clip after the tie off, repeat ... MNemo records the length of the line you just swam along, the depth/tilt angle at start, at the end, as well as the heading. These data get directly integrated in your favorite 3D cave mapping software: Ariane.
Stick Map Building
Intuitive Software
All data recorded with MNemo are easily sent to Ariane. Thanks to its intuitive interface, Ariane allows you to quickly enter your data and visualize the resulting stick map directly on the satellite map !
01. Google Maps compatible
View directly your stick on the satellite map.
02. Multi-platform
Windows
Mac
Linux
03. Hand-assembled in Mexico
All devices are being tested and calibrated both on surface and in water before shipping.
Custom Firmware
Special needs ?
If you are planning to use MNemo on a project that would require special functions or survey methodology ? We can develop for you a custom firmware adapted to your needs!
Ask for more info Downloads
We ship as fast as possible
Current delivery TIME 3-4 Weeks
The device is available on order worldwide on this.
You can also come to visit us in Playa del Carmen to pick up your device.
Data Sheet
Tech specs
Dimension and Weight
- Product size: 13.00 x 10.00 x 5.00 cm
- Product weight: 540 g
- Buoyancy (fresh Water): -50g
General
- Material : Acetal, PTFE, ABS, crystal clear epoxy
- Depth rating : 130m (depth sensor limitation) (Extended model : 290m)
Cave line requirements
- Knots : allowed if overall diameter smaller then 5mm
- Tension : minimum 5N
- Optimal : #21 or #24 nylon braided line without knots and 25N tension
Accuracy
- Depth : 10cm
- Length : 0.5% of total length +/-3.6cm
- Heading : 1.5°
- Loop closure: expect around 1% of error
Sensors
- Depth -> Temperature compensated new generation of high resolution altimeter sensor
- Length -> Quadrature encoder infra-red optical detector
- Heading/Tilt -> intelligent 9-axis absolute orientation sensor, with hard and soft iron compensation plus reference headings interpolation.
Other
- Memory: +/- 5000 shots
- Battery : Rechargeable+Factory Replaceable Li-ion 400mAh- 10h stand-by, 5h reading, 2 months in sleep mode
- Software requirement (min.) : Windows 8, Mac OSX, Linux 64b
- Firmware Update : yes, through bootloader.
- Accessibility : Device can be operated with one hand.
- Warranty : 1 year
- RoHS complient.
- Hand assembled, adjusted and calibrated in Mexico. Component country of origin: Germany, Switzerland, USA, Thailand, China
FYI : This is obviously not a mass consumer electronic product, but rather a tool aimed at serious cave explorers. Don't expect a fancy/shinny/stylish smartphone-like device. This is a rugged assembly of Delrin around poted state of the art electronic circuitry, some Teflon where necessary and plastic screws to lower magnetic disturbance. It won't even look brand new when you unbox it as all devices will be tested and calibrated both on surface and in water before shipping. That being said it's serving its purpose pretty well.
Reviews
What our clients say
Don't just take our word for it. Hear what our customers have to say!
Sam Meacham
Without exception, Ariane's line and the Mnemo offer the most sophisticated, efficient and practical means to survey and process underwater cave data.
Cristina Zenato
It's an incredibly easy and accessible system with a lot of options and capabilities. One of the many features that is excellent is being able to overlap it with google maps and show in real time where the cave is located. Cuts the survey time and effort in half.
Downloads
Free
Android
MNemo
13200 MXN + taxes & shipping
Mapping a Cave has never been so fast and accurate : while you swim, simply clip MNemo on the line and start recording data.
First to order, First served
MNemo is an exclusive device built on-demand with love, tested and fine tuned. Order now and secure the first place in the queue!
Worldwide shipping or Pick up
Shipping costs are calculated when your MNemo is ready. You can choose to come and pick it up, or let it be delivered by DHL.
Pay later when your MNemo is ready
When your MNemo is ready and tested, you get a payment link per email, including taxes and shipping costs. Your MNemo will be sent as soon as the payment is done.
You don't need to pay when you place the order. Choose between picking up your MNemo and DHL shipping.
on your Mac, locate the app you want to open.Don’t use Launchpad to do this. Launchpad doesn’t allow you to access the shortcut menu.
Cristina Zenato –
It’s an incredibly easy and accessible system with a lot of options and capabilities. One of the many features that is excellent is being able to overlap it with google maps and show in real time where the cave is located. Cuts the survey time and effort in half.
Sam Meacham –
Without exception, Ariane’s line and the Mnemo offer the most sophisticated, efficient and practical means to survey and process underwater cave data.
Skanda Coffield –
Ariane’s Line is the best and most user-friendly of all cave mapping programs available. It’s features make it super usable and there are so many other capabilities in there that you can grow into using. The Mnemo makes cave survey far more efficient and safe. The ease of data entry alone makes it worth its weight in gold!!!
Max Ardizzoni –
I can’t imagine myself collecting data during a cave dive without my Mnemo. An invaluable aid to speed up data collection, especially in the presence of strong percolation and halocline
Aleksandar (verified owner) –
Mnemo has really changed the pace at which we survey maps. Aside from the speed, the accuracy is on another level. Once you get experienced with the device the user operator error will be minimal. The end result is that you get the most precise map possible.
I would also like to give a special thank you to Sebastian for the amazing support. He was there for every single question and problem.
Josh Richards –
The MNemo has been an absolute game-changer for our exploration team, both in surveying known cave and helping us identify where to look for new tunnel. Operation underwater is easy and intuitive, downloading data to Ariane’s Line is straightforward, and the v2 MNemo adds a bundle of new features that make double-checking data underwater simple and safe. I love both of my MNemo units, and I can’t wait to put them to use again surveying some of Australia’s longest caves on our next expedition