Summary of Teddy nightlight multicolor using PIC16F84A microcontroller
This article describes a DIY multicolor nightlight project using a teddy bear bubble bath container. The creator repurposes the plastic bear, modifying it to house a PIC16F84A microcontroller circuit and a new LED. By removing original markings and drilling openings, the project creates a custom light source suitable for a baby's room.
Parts used in the Teddy Nightlight Multicolor:
- Teddy bear bubble bath pack
- Nightlight with positive economic pressure
- PIC16F84A microcontroller (or any programmable microcontroller)
- Multicolor LED
- Nail polish remover
Teddy nightlight multicolor
– Out of a pack of bubble bath for children in the shape of teddy bear
– a nightlight with positive economic pressure
– Complete circuit with a PIC16F84A (I was at home, but you can use any programmable microcontroller)
– LED multicolor
Then I drilled the base so that it gets wedged perfectly on the spherical part of the nightlight I drilled (enlarged the hole) also the upper part so as to pass light well.

Then I switched to accommodate nightlight, I removed the original LED and resistor, and I drilled the top of the ball so as to pass the led.
- What is the ideal use for this multicolor nightlight?
It is ideal for a baby's room. - How can I remove markings from the teddy bear package?
You can cancel all markings like make and range indications using nail polish remover. - Which microcontroller was used in this project?
The project used a PIC16F84A, though any programmable microcontroller can be used. - Can I use a different microcontroller instead of the PIC16F84A?
Yes, you can use any programmable microcontroller if you are not at home with the specific one mentioned. - How do I prepare the base of the teddy bear for the nightlight?
You must drill the base so it wedges perfectly on the spherical part of the nightlight. - Why did the author enlarge the hole in the upper part of the nightlight?
The hole was enlarged to allow light to pass well through the top of the ball. - What components were removed from the original nightlight?
The original LED and resistor were removed to accommodate the new circuit. - Where should the new LED be placed?
The new LED should be passed through the drilled top of the ball.