It was Earth day a few days ago, and I think it’s a good time to plant, so I’ve decided to build mini indoor herb garden for me to have herb tea and my brother, who is a chef, in my home. There are many ways to plant herbs, but I want to reuse plastic containers, such as a yogurt container. It’s very easy and inexpensive, but it looks great.
Here is instructables.
Mini Indoor Herb Garden – More DIY How To Projects
For my computation studio class i built a minimal synthesizer using arduino . I tried to incorporate ideas such as microtonality (tones/pitches bewteen pitches for example the pitches in between b and c) and binary as a way to add slight shifts to the pitches generated. I have 6 switches and each switch has a value they range from 160,80,40,20, and 10. Depending on which switches are on you will add its value to the pitch you hear. So if you are generating a pitch of 600hz and you have switch one on it will add 160 to that, and you will hear 760 hz. When you turn this switch off you will hear 600 again. If you have all switches on the sum of all the switches will be added to the pitch you hear. This project needs some electronics building and coding to get it to work and i will share both here.
heres a bit about binary courtesy of wikipedia:
The binary numeral system, or base-2 number system, represents numeric values using two symbols, 0 and 1. More specifically, the usual base-2 system. Owing to its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used internally by all modern computers.
i learned how to count like this a while ago, it’s what made me think about using switches to add to the pitches made by the arduino. Using this you can count really high using only your two hands.
what you need for the electronics:
7 x spst (single pole single throw switches, you could use double pole double throw if thats what you have, you will only need 2 poles to get the switches to work correctly)
1 X 2.1 mm dc adapter plug ( i got some from radio shack)
1 X battery snap
1 X 9 volt battery
1 X arduino board ( i used a Duemilanove , there are many other types of arduinos out there)
2 X 100k potentiometers ( i used audio taper, linear taper should be fine too)
Wire ( as much as you can find, i have a wild wiring style maybe you will use less, You should try to get red and black wire and maybe some colors )
an enclosure if you want to make things more permanent.
with electronics everything can be broken down into smaller circuits. Your tv for example is really a collections of different circuits which are linked together, each section or circuit does its job and works together with the other circuits to get something done. This project is no different there are smaller circuits that when put together make up the whole. And so i will break this project down into its parts.
here is a photo to help visualize.
First is the schematic for how the switches and potentiometers should be wired. Each switch has a connection to +5 and to ground, they also have a wire that will connect to the arduino. on one terminal of the switch solder a wire, I used red for +5. On the other terminal solder one of the 15k resistors, then solder a wire to the resistor this wire will connect to ground. Also solder the third wire to the same terminal you soldered the resistor to. When you turn the switch on the arduino will see the switch as being HIGH or on.
here is a simplified version of the switch wiring. To connect all 6 switches you would need to make this three time and connect all +5(red wires) together, and all ground(black wires) together.
here is photo of a potentiometer and how it can be wired to ground and +5:
here the blue wire connects to +5, and the yellow wire connects to ground while the wire connected to the center lug on the potentiometer connects to an analog pin on your arduino. You would need to repeat this with another potentiometer. You can connect the +5 and ground wires of the second potentiometer to the same +5 and ground points as the first.
This is the schematic for the power portion of the project, here i am using a 9volt battery connected to a 2.1 mm dc plug to power the arduino without it being connected to a computer all the time. The led is used to indicate that there is power, you have to attach a resistor to the longer leg ( +) this leg is connected to the + side of the battery( the red wire).The shorter leg can go to the - side of the battery. When you flip the switch the led should light and you will have power going to your arduino.
here is a photo, it does not have an led . With or without an led it works the same.
here is a link to the tutorial at the arduino site on how to make this adapter:
This is a schematic of the audio out portion, connect a 22o ohm resistor to one side (use a smaller resistor for higher volume, or use a larger resistor for less volume) of the speaker, I used a piece of wire then soldered the resistor to the wire to allow for some flexibility. The resistor is what you will plug into arduino. To the other side of the speaker solder a wire, this wire will go to ground.
here are some photos of the circuit plugged into the arduino:
For the most refreshing summer drink all you need is:
1 oz vodka
1 oz lime juice
3 oz Ginger Beer
combine in a glass and enjoy!
Finally! A Hackduino tutorial on perfboard!
For just $8, make your own completely custom arduino circuit. Half the size, and less than 1/3 of the price, this is something everyone who is serious about prototyping and installing with Arduino needs to know how to do!
Never dismantle another project just to reuse an Arduino again! CAN I USE ANY MORE EXCLAMATION POINTS?!?! YES!!!!
Representing audio through vibration with Arduino – More DIY How To Projects
This is my beginning experience to represent audio through vibration with Arduino. I tried to make wearable wristband with lilypad arduino, pager motors, conductive thread and circle PC board. I expected it to be able to work but it failed. It was my first experience to make wearable technology. I would like to retry it in the future.
This craft project demonstrates how a parent can teach their child to braid while integrating some basic math questions.
The instructable requires some hands-on work from the adult (especially when dealing with the hot glue gun), but it’s pretty straight forward and a great learning tool for kids. Have Fun!
Craft Blog (http://craftblog.com.au)
The Crafty Crow (http://belladia.typepad.com/crafty_crow/)
and Craftzine Blog (http://blog.craftzine.com/) [UPDATE: http://blog.craftzine.com/archive/2010/05/yarn_octopus_teaches_kids_to_b.html]
This tutorial shows how to make a bag (with a personality) using fabric pieces from old clothes and other fabrics. The project is very easy to make but takes time and requires a lot sewing with a sewing machine. It makes people smile when I walk with it on the street, which I consider as an achievement in NYC and that makes me smile also
We’ll talk about web analytics and self-promotion online today in class, and I’ll meet with anybody who wants a one-on-one about their project.
Here’s the scoop on your final projects!
Due online by Sunday, May 9 at 10pm
-You can make an Instructable, a long blog post here, a PDF, an annotated Flickr set, or a post/other presentation on your own site, whichever you prefer.
-Video is optional, but photos and steps in text are mandatory, as is releasing any source code, pattern templates, or other resources needed for readers to make your project.
-Regardless of your method of publishing, you must create a summary blog post here, presenting your project (by 10pm on Sunday)
-After publishing your tutorial online, share a link to it with a few sites/blogs you think might be interested in posting about your project.
On our last class, May 12, we’ll have snacks and have casual presentations about our projects and how they were received online! Email me with any questions.
Kitchen Pegboard w/ E-Reader Holder
My final project will be a multi-use pegboard for the kitchen that has an e-reader attachement. I really want to do this because I think there’s some great cooking apps out there for Kindle, iPad, etc, and having a safe, dry place to keep the recipe displayed is important. I’d also like to explore the possibility of making an industrial strength capacitive utensil that can turn pages on iPad/iPhone easily and without goopiness.
Wire (for making e-reader holder)
pegs/baskets/etc for other utensils
wood for making the space between the pegboard and the wall.
Realness – for keeping it real.
An e-reader (mine’s a nook, trust)
I wanna do this project because i think lots of people have use for this (and i also secretly hope it will get swept up in the iPad/Pod/Phone extravaganza.