Instructables

Light-Up LED Lollipops

FeaturedContest Winner
Picture of Light-Up LED Lollipops
DSCF4023.JPG
DSCF4003.JPG
DSCF4017.JPG
DSCF4005.JPG
Great fun and yum for every age! Adding a spicy red LED to your lolly is hardly more work than just making regular lollipops. That huge sucker will liven up your halloween party - and keep your guests "licking and sticking" all night long! (because big lollies are super sticky, don't let them drop on the couch)

If you like my projects, I hope you'll check out my new project on Kickstarter

have funs - and yums!

I created this project originally for The Hungry Scientist Handbook
 
Remove these adsRemove these ads by Signing Up

Step 1: What you Need

What You Need

A standard recipe for lollipops:
* sugar
* corn syrup
* cream of tartar
* Plastic mold such as a yogurt container
* Sauce pan
* Candy thermometer (can measure up to 300 F)
* Oil or cooking spray
* Measuring cups

Stuff to make an LED go:
* Bic pen
* 2 wires
* 5mm-size LED, any color. make sure it is a "LEAD FREE" or "ROHS" LED.
* 3V coin cell battery

WARNING: if you are in USA it is still legal to sell electronics with lead. you should check that your LED is "LEAD FREE" or "ROHS" before using it in this project. if you are in EU then do not worry, you guys are smart and made it illegal to put lead in the electronics 10 years ago.

Step 2: Wire your LED

  • Cut your wire about 2" longer than your Bic pen.
  • Strip the ends of the wire with a wire stripper.
  • Connect each leg of your LED to a wire. You can just twist them together, you don't need to solder it like I did here.
  • After the wires are securely twisted together, cover the bare part of one of the wires with tape, so that it can't accidentally touch the other.
  • Take apart the pen leaving just the plastic tube
  • insert the wires through the plastic tube until they come out the other end.
  • Touch the two wires to the opposite sides of the battery, and your LED should light up. If it doesn't, flip the battery around and try it the other way.

neat seems cool

ra.rokks2 years ago
doesn't solder have lead in it? if so, why have you soldered the LED to the wires?

The lead makes it taste better. No I am just kidding do not eat lead!

kazmataz1 year ago
Carleyy and I are making these now, and came across an issue. For our molds, we used plastic Solo cups - but when we poured in the candy, even after it had cooled to 200, it melted the plastic. Is there a particular type of plastic that's safer to use, and has a higher heat-tolerance?
dan (author)  kazmataz1 year ago
don't use foam. notice in step 5 i put the cup into ice water so it wouldn't melt. use Polypropylene (recycle code 5), that has a melting point around 250F and is not harmful if it does melt.
james42 years ago
Why do I have a strange feeling that this isn't a good idea?
wirestyle2 years ago
where exactly does the 3v battery go? the bottom of the pen shaft? is there any way to get everything to fit inside of it? someone mentioned using 3 smaller batteries, would that work?
dan (author)  wirestyle2 years ago
i just taped it to the bottom of the pen shaft.
wirestyle2 years ago
you can buy lead free solder. it uses tin instead of lead
hugoop2 years ago
Nice instructable, nice nose.
I could be wrong, but don't the LED wires contain lead? I just ask because I'm currently working on a little electronics kit and it has a warning to wash hands due to lead contents of the wires.
Yeah, I work with Electronics for a living, and I would never suggest putting an electrical component into something you eat... and also I would not suggest getting Solder anywhere near food.

This Instructable is cool... but doesn't look too healthy
dan (author)  RobertRobbie2 years ago
a lot of electronic parts are lead free because the sane parts of the world made lead electronics illegal 10 years ago. but its true that in the US, you may not know what you got. so don't lick all the way down to the LED!


Skymeat dan2 years ago
The amount of lead in here is minuscule. I wouldn't sweat it. I handle mercury arsenic and lead in my everyday life and regularly take heavy metal tests to confirm my exposure. Needless to say with a bit of precaution you aren't in danger. And with this there are only a couple possible leads you could potentially suck and get any exposure. I'd worry much more about berries picked anywhere near a road that existed when leaded gas was still around.
It is true that most electronic parts should be lead free... but in most cases they aren't completely, anyway the main thing I'm thinking about it chemicals they use to make the leds and also the fact that you are soldering lead directly onto the led anyway.
parts are almost always lead-free. Solder on the other hand... But in this project it's not a problem - you don't lick anything other than plastic bulb of the led.
dan (author)  dan2 years ago
I added a warning about this to the project
kerikins2 years ago
Oh my goodness!!! I crack up at how many people try to 'sabotage' the submitting author of the great ideas on this site. It reminds me of the people whose 'JOB' on Craigslist is to scan ads and 'FLAG' every ad that doesn't cross it's t's and dot it's i's......people...these ideas may have been found elsewhere and the submitter is thankfully for us putting it somewhere for- WE/US the people who have NOT seen it before. This is not SCIENCE class or some members only/ squaddies club This is not about inventing the 'first' this that or the other thing or a Tesla/ Edison competition ...This is for the creative and curious minds who may never have been privy to all of these delicious and exciting projects made user friendly ideas!!!! Loosen up and enjoy the ride......Sukipookers P.S This is a brilliant idea, Thanks so much for putting it up on iinstructables......
tbibb kerikins2 years ago
WORD!!
drusilla2 years ago
This project is really cool, and using the right materials, I imagine it is probably harmless given one doesn't put the electronic parts in ones' mouth.

However, it seems like a bad idea to give these to children, especially really young children, given they tend to have a low body mass, are still developing, can be more susceptible to certain chemicals that may be present, and are more likely to do something like chew on the led if not carefully supervised. The stuff in the LED is definitely not healthy. And even lead-free solder isn't safe to eat--certainly the stuff I've bought in the past is covered in numerous warning stickers.
Lonetengu2 years ago
I would have used a more cloudy lollipop recipe for more light diffusion but other then that awesome job.
csprinkle2 years ago
This really is clever, but lead, or no lead, I'd be concerned that it's a choking hazard...

madwheels372 years ago
Everyone on here is degrading it. What the heck, nice way to be encouraging. Nay-sayers. Who cares where he got it from, and if you're worried about getting lead poisoning from it I'll tell you a secret how not to get it. Don't effing make it or eat it ddeerrrrrr. Awesome project. I'm sure the amount of lead in here won't make me expire.
GREAT comment! I most enjoy the comments that keep negativity to a minimum. At least let's ask questions (ie: this seems to be a repeat of one I saw on another site / book / etc.), rather than assuming the worst.
Also, there is lead free solder, for those who are concerned about the lead in solder. I use it to make jewelry, and it is approved in US for children's jewelry (as they have a tendency to chew on stuff even when older than toddlers.).
Just found this site, and am loving the creativity!!
rcisneros2 years ago
Couldn't you use (3) 1.5v button cells? They make them much smaller then you could put them in the handle with a push button switch at the bottom. You could then use a multicolored LED.

Cool project. I so want to make them, but my kid isn't even 2 yet. Maybe I'll make them for myself.
iScience2 years ago
This is from 'The Hungry Science Handbook'!!! You stole pictures from it? Because it looks exactlly like it
dan (author)  iScience2 years ago
I created this project originally for the Hungry Science Handbook. If you read the chapter on this project I think you will find my name there.


rcisneros dan2 years ago
LOL! That is awesome. Best slam ever.
Love the project.
iScience dan2 years ago
Oh Really? Im so sorry for mis-understanding! Cool project though
batonas2 years ago
looks great
ChrysN2 years ago
Clever!
Kiteman2 years ago
How about a version with a switch?
dan (author)  Kiteman2 years ago
to turn it off just remove the coin cell. you want it very simple since you are just going to eat it! i guess you could re-use the handle and LED in a new lollipop later.
mischka2 years ago
Looks cool. I guess my 3yo nephew would love it.
Pro

Get More Out of Instructables

Already have an Account?

close

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!