Using 2 meters of Digital RGB LED Weatherproof Strip from Adafruit I am making some artwork for our dining room. Also using a picture frame with a 12″ square opening, I cut the LEDs into 8 strips with 8 LEDs on each one and began soldering them together.
Yesterday I deployed a Jeenode and a tmp36 temperature sensor.
I am receiving the data inside on a receiving Jeenode with a real time clock and a 20X4 LCD screen.
I still have to add the rain and wind sensors and also plan on setting up a room node (inside temp and humidity along with a PIR sensor).
I wonder how long the battery will last with the solar panel? Update- 12 days, see below.
I’ve been working on a holiday present for my sister which is a temperature monitor for her greenhouse. Originally I wanted to use Xbee radios as I had tried them before and have Rob Faludi’s book Building Wireless Sensor Networks.
I recently discovered JeeNodes and decided to give them a try instead as I had found Xbee radios not the easiest to work with. What you get for roughly $22 is a small Ardunio based on the Really Bare Bones Board with a radio. Made by JeeLabs with an extensive library that can be found on Github. Read the rest of this entry »
Finally finished my EAT sign. It has 3 modes you can click through using the button on the side. Mode one lights up one led at a time, mode 2 blinks all the led’s and mode 3 fades all the leds up and down.
I used a standalone arduino and 2 TLC 5940 chips plus 23 leds.
Here is my complete parts list.
1. 3 letters from junk store
2. plywood for base of sign
3. 2 Adafruit proto boards.
4. 2 TLC5940 chips
5. 1 photocell to know when it is dark enough.
6. 1 momentary pushbutton
7. 23 10.3CD leds
8. led mounts
9. Some resistors
10. Lots of wire
12. Wooden Dowel Pins
I am starting to make a sign for my kitchen using 2 TLC5940 chips and roughly 15 – 30 leds. The exact number of leds I need is still to be determined. How to wire up the TLC5940 can be found here.
The letters will be slightly raised off the backing panel, allowing light from the leds to show. I will be drilling holes through the backing panel and inserting the leds from behind.
The general idea is to use a photo resistor so the sign automatically comes on when dark enough.
I will also have a push button on the side so you can toggle through different modes. Right now I have 3 modes. Normal mode turns on one LED at at a time until all are lit up. Blink mode blinks all the lights. Fade mode fades the leds up, down and up again, finally leaving them on at full brightness.
Check out the short video for the set up and the 3 modes. In the video I am covering the photo resistor to get the lights to go on and then pushing the button to toggle through the modes.
I’m starting to experiment with FLORA from Adafruit and clothing.
The platform is easy to use so far, but for some reason I have to unplug it from my computer and plug it back in before a sketch will upload.
The idea here is to use a light sensor to turn on an LED in the suit jacket pocket when it is dark outside. Potentially I might put more LEDs under the collar.
Some random thoughts or ideas in this vein. Can you use snaps as an on/off switch? Can zippers conduct electricity and if so, can they be used as switches as well? How about metal buttons? Assuming you can by waterproof LED strips, how about making a bicycle turn signal jacket with buttons / activators in the garment cuff? Or a running jacket that lights up at dusk so drivers and other people can more easily see you? How do you make any of this removable so the garment can be washed?
Another vein would be to include GPS and Adafruit does make a GPS sensor for use with FLORA. We especially like the No Place Like Home Shoes. The GPS is activated by a heel click and indicates the way home through LEDs.
I still had a TLC5940 chip from an older project and wanted to make a simple mood light with some RGB LEDs. This light has 3 colors plus off. Of course you can add more coloring mixing and other changes to the different modes instead of just one color.
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