Blinkies *noun* [blin-kees] A word made up by Les to make LEDs sound even more fun.
I love LEDs (Light Emitting Diodes), they are the gateway to starting your adventures with electronics.
If you can...
- Control an LED
- Then you can control a motor
- Then you can build a robot
- Then...World domination?
Seriously, your path to world domination starts with an LED.
Recently I have been experimenting with creating LED blinkies made from common adhesives formed into moulds.
The goal of this adventure is to create a safe, cheap and efficient way to make lots of blinkies so that schools can make cool custom LED figures / decorations.
Which LED (get it?) me to experimenting with other adhesives, specifically those that are commonly used in schools, and can be left to dry in large batches.
One of the most common adhesives in school is PVA (Polyvinyl Acetate) glue. It's really cheap and can be easily bought / found in large quantities.
So I dug out my Lego minifig mould and tested it out.
Experimenting with pva glue to make LED blinkies pic.twitter.com/lbcQwiVj5N— biglesp (@biglesp) March 15, 2017
So I squirted the mould with PVA glue, put in an LED and waited...and waited...and waited!
F.A.I.L First Attempt In Learning
So PVA glue has a few issues
- It forms a skin
- It shrinks
- It warps
- It never dries in large quantities
- It's still not dry after 24hrs
So this was a FAIL, which is great news as I can pass on that information to you.
@biglesp I was a furniture maker and PVA is not a gap filling glue. I'm doubting you'll repeat this experiment.— Pablo Joyce (@pablisch) March 15, 2017
Pablo is quite correct! :)
@biglesp I reckon it will take an age to solidify, if at all, but if you build it up in layers & use a hair dryer to assist shld work.— Tecky Becky ☠ (@TeckyBecky) March 15, 2017
Becky is also quite correct and her idea to use layers with a hair dryer is great
I need to use other adhesives to see if there is a way to make lots of blinkies quickly, cheaply and safely.
Next test silicon sealant, as used to seal your kitchen sink / shower.