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Pages and Files
Quick Start Guide
History of Major Design Decisions
Ongoing Validation Testing
Which Phones Can be Used and how? (coming soon)
Phone Testing Procedure (coming soon)
Obtaining Wockets Hardware
Option 1: Make Them Yourself (Detailed Info on Assembly) (Coming soon)
Option 2: Buy Them in Small Quantities (Coming soon)
Option 3: Collaborate with Wockets Team (use loaners) (Coming soon)
Testing and Calibrating Wockets
Calibrating a Wocket
Testing a Wocket (coming soon)
Google Code Site
(all software, including firmware)
HW Design History and Tech Specs
Wockets data formats (coming soon)
Wockets Software Architecture (coming soon)
Wockets Timestamp Correction (coming soon)
Wocket Enclosure and Band
Housing V3 Sealer Construction
Sensor Housing V4 concept and production
Bands and poach concept and production
Activity Recognition Software
Research Papers - Reading List
Wireless Sensor Kits
Other BT Sensors
Open Source Hardware
Open Source Tips
Physical Activity Conferences
Legacy Stuff (e.g., MITes)
MITes Design Info
Files for MIT/Stanford/UT/Northeastern Projects
How to prepare Housing process V4
-as small and thin as possible
-adapts to body curvature
-provides sensor identification and placement information
Material and Resources you will need:
Teflon : TEFLON 8545K28 R PTFE Sheet, 1/2" Thick, 12" X 12".
Hot Glue : Dual Temp glue sticks 10" length
Hot glue gun
Mold release spray
Access to CNC router. Ball end mill 0.125.
Providers, resources and consultants used for the SWAP project
Hot glue: www.stanleytools.com
Mold release spray: www.reynoldsam.com
Other useful resources:
For CNC router services:
Material usage estimate:
Tefon: Makes 3 sets of molds per 12"x12" sheet
Hot glue: makes 3 sensors per 10" glue stick
mold set_lower part (7x7x 1.3cm aprox.)
mold set_upper part
(7x7x 1.3cm aprox.)
Watch this video on how to encapsulate a Wocket, and follow the steps below.
Wear protective gloves when handling
hot glue. Wear protective glasses when close to a functioning milling machine.
Step 1. Prepare Wocket
You should have the battery painted as required for your needs. For our project orange and green sticky labels were printed with an A or W and were adhered to the Wocket.
To prepare the Wocket for housing, just press the connecting wires down as much as you can -as shown in video- to prevent them from sticking out of the housing.
Step 2. Prepare Mold
Spray the mold release agent on both sides of the mold. One or two times should be enough . Keep spray 6" far from mold. The layer of mold release agent should be thin and have no drops visible. Excess of agent will deteriorate hot glue.
Step 3. Pour Hot Glue On Lower Mold
The hot glue gun should be hot, so it is best to plug in the hot glue gun 20 minutes before starting the housing process.
Hold the lower mold and poor a gentle layer of hot glue as shown in video. Keep hot glue inside mold shape as much as you can. It should be done continuously and carefully to avoid air bubbles, but has to be done fast so that hot glue will not harden.
Step 4. Place Wocket
Quickly after you pour the hot glue, grab the sensor with your hands -try to touch only the edges to avoid damaging circuit- and place it as shown in the video, with the metal plates on the connector facing you. Push it down as much as you can -again without touching much of the circuit- and make sure it stays vertical. A significant rotation of the senor towards any sides will cause problems when connecting sensor with charger.
Step 5. Pour Hot Glue Over Sensor
Quickly after placing the Wocket, start pouring hot glue over the sensor and battery, as shown in the video, continuously and quickly to avoid air bubbles or hardening.
Step 6. Clip Molds Together
After finishing, place the upper mold on top, press molds together hard, make sure the mold edges are aligned, and then clip.
Step 7. Harden Hot Glue
Place mold in a freezer for 5 minutes.
Step 8. Remove The Wocket From Mold
Remove the Wocket carefully as shown in the video, pulling from the flash excess.
Step 9. Cut Flash Around Housing
Using a sharp X-acto knife cut all the flash excess and clean the connector area avoiding any metal contact with the connector metal plates.
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