For this project, you'll need a small pumpkin and some carving tools. This pumpkin was sold at my local store as a pie pumpkin, but it's perfect for carving. Plus, it was less than $2. I also used a $1 pumpkin carving saw and a spoon for all of the actual carving, but just use whatever you'd like
First, carve out the top of the pumpkin like normal, and remove the innards. Then, carve a face or other design into the pumpkin. If you're not very good at carving faces, I suggest having your spouse lightly draw a face on the pumpkin with a pencil. That's what my wife did!
Once you're done, you'll have a tiny jack-o'-lantern that looks great by itself. But don't eat it, because we're going to kick it up a notch!
For those of you who are interested, this is the circuit I designed. It is very simple. Basically, I am providing 3V by using the two AA batteries. The LED is rated at 2.4V and 20mA, so in order to provide the proper current, this is the calculation I did:
V/I = R
(3.0 - 2.4) / (0.020) = R
30 = R
The closest resistor I had was a 33 ohms, so that's what I used.
Now your LED module is complete. Your module doesn't have to be this big though. It won't look bad in your pumpkin, but it will be noticeable. I chose to use these parts because they minimize the need for soldering and they make it easy to switch out LEDs and perform testing. Plus, I had them in my tool box. But, if you're good at wiring and soldering, don't use the battery holder. Also, try using AAAs to further minimize the size.
Awesome, the mini LED jack-o'-lantern is complete! You'll find that the switch comes in handy. Here are a few photos of it in various lighting. It really looks great in darker areas, especially for its size. Compared to a candle, the steady, ominous red is pretty cool. But if you don't like the color and brightness, and you know what you're doing, simply adjust the number and type of LEDs to your liking.
This tiny, electronic, jack-o-lantern that will outlast any candle. And since you don't have to worry about fires, this is perfect for the home or the office. Thanks for reading, learning, and watching. Have a fun and safe Halloween!