Below are a list of supplies that are the recommended for this instructable.
Of course certain items can be completely eliminated or substituted with others.
In order to for us to focus on teaching you the encapsulation technique and to easily demonstrate the waterproofing performance, we be creating a simple electronic device soldering a simple wearable component (LilyPad LED) and attaching it to a power source with alligator clips. Once you've gotten down the encapsulation technique, go buck wild with testing different or similar simple or complex electronic devices and their performance in different water-based environments!
Here's what you're going to need:
- Corning Sylgard 184 Kit (PDMS)
. This can be purchased online from a variety of locations including:
Galco Industrial Electronics
or purchased from eBay
(search "Sylgard 184").
Specifications on the Sylgard 184 can be found here
. Other varieties of PDMS are available.
Sylgard 184 is chosen for its transparency, waterproofing and room temperature curing properties.
- Plastic disposable containers as molds
(2 are used, one to mix in and the other as the mold).
For our instructable we used small petri dishes.
- Disposable spoons
(2 spoons used, one for the elastomer base and the other for the curing agent).
The spoons are used to as a measuring (scoop out the sylgard 184) and mixing tool.
- Standard solder
(rosin core 60/40 lead/tin)
- 30W soldering iron
- Desoldering pump
(for any mistakes)
- The third helping hand, 3-arm holder
(used as a third hand to help hold items into place)
- 6" red and black stranded wires
- Red and black insulated alligator clips
- Wire cutter and stripper
(separate or combined)
- Diagonal cutters and needle nose pliers
(used here 2 AA batteries connected in series to power LEDs)
- Battery holder with wires or snap connectors
(used to house the batteries; power supply to LED)
(used here is Lilypad LED). The specific LED's used can be found here
- Water/clear cup or any container
(used to test waterproofing of the LED immersed under water)