Rodent IoT Running Wheel

Details

Project Goals:

Report wheel turns continuously
Report "off wheel" activity via a PIR sensor
Connect to the cloud and track with MÍOS app

Constraints:

Fits in multiple cage types
Wireless
Battery life of >3 weeks between charges

Hardware:

This project uses a Particle Photon, hall-effect sensor, and PIR sensor
The housing is 3D printed and requires one skate bearing for the wheel

Methods:

The wheel counts turns each time a magnet passes the hall effect sensor
The PIR sensor detects "off wheel" motion
Both data streams are sent to Blynk
Data connections are timed to save battery

Funding and terms:

This project was funded by the NIH Intramural Research Program (NIDDK). This project follows the terms and conditions of the MIT license (please see logs for complete license wording).

MÍOS was conceived by a team of researchers at the National Institutes of Health (NIH) and Food and Drug Administration (FDA), and all app development was done by Blynk. While MÍOS devices and designs are open-source and free, Blynk is a "freemium" service and some features cost money to use. 100% of this money supports the business operations of Blynk. NIH, FDA, and members of the MÍOS team receive no royalties or payments from Blynk.

Files

Wheel.stl

Standard Tesselated Geometry - 1.26 MB - 04/27/2018 at 18:10

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Wheel top door.stl

Standard Tesselated Geometry - 7.11 kB - 04/27/2018 at 17:38

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Wheel Mount.stl

Standard Tesselated Geometry - 132.99 kB - 04/27/2018 at 17:38

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Components

Project Logs

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License Details

Lex Kravitz • 06/24/2018 at 13:26 • 0 comments

This project is released under the MIT license:

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Build Instructions

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3D Enclosure

1) 3D print and post-process the mechanical enclosure

2) apply brush on coating for all 3D printed parts (optional)

Wheel preparation

3) push in the skateboard bearing in to the back of the wheel.

4) Epoxy 2 magnets in to the magnet holders with their polarity in the opposite directions (Note: it doesn't matter what direction each magnet is facing as long as their polarity is in opposite directions).

5) Epoxy 4 suction cups to the back of mount

Soldering Sensors to Photon Battery shield

5) Clip away stack-able headers on the bottom of the photon battery shield

6) Solder the following wires:

PIR Digital out --> Photon Digital Pin 4

PIR Power --> Photon 3V3 Pin

PIR Ground--> Photon Ground Pin

Hall-Effect Signal (Green) --> Photon Digital Pin 2

Hall-Effect Power (Red) --> Photon Digital Pin 5

Hall-Effect GND (Black) --> Photon Digital Pin 3

Discussions

Rodent IoT Running Wheel

Description

Details