Rainbow Pastel Garden Lamp

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About: Disclaimer: The author is not responsible for loss of life, limb or property. The author is not responsible for your actions. The author is not responsible for anything. In fact, the author is completely i...

Intro: Rainbow Pastel Garden Lamp

I've had Malibu Lights outside for years. Its nice having a big low voltage power supply to play with.

Lately I've been "upgrading" the lights. Led bulbs seemed the obvious progression but then I had a pumpkin LED go too far...

https://www.instructables.com/id/50W-RGB-LED-Infla...

Even my umbrella got some Led's

https://www.instructables.com/id/Ultimate-LED-Mark...

So when my wife's Zen Garden Waterfall's pump died I couldn't throw it away. Something about its shape said "light me up", so I did.

Step 1: WS2812's and a Odd Find for the Center Form.

I wanted to use a string of addressable RGB led's. Adafruit has a nice library and a demo Arduino sketch that is mesmerizing....

While looking for a Piece of PVC for the core I spotted a container full of Crystal Light (ugh) iced tea cups. i save the empty's for mixing epoxy but now I had a use for the container itself....

I loosely wrapped the Led's around it and tried the demo. Looked pretty good. now I had to clean the container with some nail polish and stick the Led's on permanently. I drilled a hole at the end of he strip for the wires.

Step 2: How to Mount the Microcontroller

I wanted to use a bridge rectifier and a simple 7805 to drop the Malibu sets transformers output down to run the Led's and Micro.

The easiest choice was to 3d print a base. I even made a captive nut holder for a standard lamp hardware.

Step 3: Assembly and Testing

I drilled a hole in the bottom for the lamp hardware but it seemed flimsy so I 3d printed a shell to reinforce the end.

I ended up using an AT Tiny 85. It draws anywhere from 150ma to 500ma as it sequences through its colors.

Step 4: Programming the Chip

This is the hard way but it works.

I use a USBASP and some jumper wires.

Arduino as ISP would work too....

Step 5: I See More of These in My Future...

I liked the idea so much I stocked up on parts and made up a bunch of PCB's for these. Next to get upgraded is that lantern sitting out on the front porch....

Step 6: Hooking It Up

I decided to put it out by the side of the garage..

Now for the easy part. there is a pagoda light in the corner of that flower bed. Just had to tap it into the existing power wires with a couple of wire nuts.....

Time to trade in that little solar lantern on the other side too.

I decided to leave the bottom open so it doesn't fill up with water.

I may have to drill weep holes in the cap and put it on to keep little critters out....

Step 7: Night Time!

It's fairly bright. I may even get rid of that walkway light to the right of it....

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