Twitter CLI Teaser

I sort of forget what my original project entailed…something about tweeting via the command line, for Arduino purposes. You can pretty much just toss a bunch of words in a hat, and add ‘Arduino’ and ‘Command Line’ to them, and there you have one of my typical projects.

Anyhow, here we find ourselves. I am missing some dependencies with OAuth, but have managed to get twitter working from an interactive python shell:

cli twitter

command line-y

This section is as much for my reference as it is for public knowledge…I snagged the commands that I ran to snag my comments. It first prints swantr0n (my dev account) and then my primary Twitter feed, @swantron

swantron@mini9:~$ python
Python 2.7.1+ (r271:86832, Apr 11 2011, 18:05:24)
[GCC 4.5.2] on linux2
Type “help”, “copyright”, “credits” or “license” for more information.
>>> import twitter
>>> api = twitter.Api()
>>> feedSwantron = api.GetUserTimeline(‘swantron’)
>>> feedSwantr0n = api.GetUserTimeline(‘swantr0n’)
>>> print [ x.text for x in feedSwantr0n]
[‘development account for @swantron | tune into for projects’, ‘hello world’]
>>> print [ x.text for x in feedSwantron]
[‘@vftb …you better believe it’, ‘Twitter Project Teaser : | one step closer to tweeting from the #CLI … might take a run at make it tweet’, ‘Might need to implement some sleeves into my wardrobe… @adafruit just flipped the script with open source cuff links’, ‘unsafe at any speed… updating #ubuntu on the road’, ‘Upgrading Mini 9 to #Ubuntu Natty | posting to kill time… review here ( ) lunch-aft on the morrow’, ‘ #DIY lawn mower repair from a #math major. spoiler: it works’, “#arduino no you didn’t #LCD project, stepped up a bit”, ‘working on a python script to dump info from web to LCD #arduino’, ‘ video of #boc unboxing (for the win)’, ‘#woot bag-o-crap unboxing @ not too shabby’, ‘ still finding some compiz issues in #ubuntu 11.04’, ‘#Arduino project @ | driving LCD screen via command line’, ‘@RobotGrrl… what version are you running? I had no problems with IOIO / Droid 2 (froyo 2.2)’, ‘Easy LCD #Arduino Display | | feels good to have a warm soldering iron and functional hardware’]

I will keep plugging away until I get this thing hammered out. If not, I can print this suff to my LCD for a real-time Twitter display. Could be cool either way.

Twitter Project Teaser

A while back, I tossed a little concept video out to the nets regarding CLI interface with my site’s comments and an LCD screen. I figured that I could do a similar thing with my Twitter account…spurred largely by Adafruit’s Make it Tweet challenge. Well, it turns out that Twitter has a few hurdles to jump, in regards to posting tweets to an account.

My failed usage from the command line was utilising curl

> curl -u swantron:pass -d status=”command line test”

I was getting an error message, that basic authentication was not supported. For the loss.

It turns out that you need a few keys in order to authenticate, which requires registering an app with Twitter… like this

twitter dev account


There we go…keys in hand. Now, I need to figure out how to sew this together using curl or wget. If all else fails, I am pretty sure there is a py library that I can snag. Stay tuned…this one could be fun.

DIY Minority Report

Spoiler1: This is awesome.
Spoiler2: I’ve never seen Minority Report.

I do know that there is some sort of hands free interface, and that is what I have put together.

minority report

+1 dizzy

Long story short, I have extended upon my PING))) project to include some sweet touchless home automation. I have the ultrasonic sensor interfacing with my garage door and a lamp, utilizing a servo and a PowerSwitch Tail, respectively.

Hit the bump for an awesome video of this thing in action, and for my spippet.

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Garage Door Hack

Introducing Open-er-o-matic 3000. OOM3K. My finest project to date. I have my Arduino poking around with a PING))) sensor, a servo, some LEDs, and best of all…my garage door opener. End result: some Star Trek-ass shit.

hit the vid

Ronco alert

Check this footage of the OOM3K in action. Here, I had it configured to open the door when the ultrasonic sensor echoes off of something within 8 cm…

After the bump, of course

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Ultrasonic Distance Sensing

I really should have a running list of these mini-projects I have been cranking out. This one: using a PING))) sensor from Parallax Inc to drive LEDs for a set of values. Sounds boring, but it is sort of cool. Oh cool.

Picture time:

doing work at work, again

doing work at work, again

Follow the bump for a vid / snippet
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Ping Sensor Project Preview

Parallax Ping))) sensor in the house. Literally.

ping ping ping ping ping ping ping ping


This dapper-looking little guy can accurately measure distance from a few to a few hundred cm. It is very simple by design…basically just a sonar setup. My sketch sends out a signal and listens for the signal’s signature upon return…calculates time elapsed and interpolates distance using the approximate speed of sound. Slick like Rick.

I hugged the sensor on my binary-project-having breadboard, as this is going to be incorporated in some way. My fr1st thought is to turn those LEDs into range holders, and output according to range. Could be awesome. Stay tuned.

Driving Multiple LEDs with an Arduino

I have had a bunch of white LEDs in my Amazon shopping cart for quite some time. I was tossing around the idea of doing a 5×5 cube a while ago, but ran out of steam on that project. I blame the PowerSwitch Tail…I had relays on the brain, big time. Still drafting out my big project on that front; stay tuned for some sweet garage door action. I rarely find my self with two projects in flight, that may actually turn into something, but I just might have stumbled back into the LED arena.

Long story short, I had my Arduino, Mini 9, some white LEDs, and exactly seven jumper wires in my backpack. I stepped upstairs at work for lunch, and decided to horse around with them…see what it takes to run multiple LEDs. Seems basic, and it is. Fortunately…

Here is he setup…

six shooter

not much to it

I put together a little sketch. I managed to grab the time-stamp notion from this sketch that is included with the IDE, and run with the rest of it. There will be snippet, but snippet will follow A SWEET VIDEO FTW

Video / snippet / wrap-up after the bump
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Arduino Servo Fan Control

Before you try to dr this, I have included a video to combat the tl crowd. You’re quite welcome. See below.

Now I’ll explain. I may even toss in a snippet…who knows.

Basically, I found myself with a few free hours, an Arduino, a bunch of random components in my lab (read: garage) at my disposal, and no real plan of attack. Result? Arduino/servo motor controlled fan.

Jump off component…silver spray painted Altoids can. Nice…chop that sucker up so I can smash a servo motor in there.


+1 minty

Well done. See…

works well

dang, son

Lady Ada uses these for some random projects. If you can stomach a whole bunch of crappy mints, you have a nice little Arduino-sized metal casing. Of course, it poses a grounding threat, which I experienced working with my motor shield a while back. That said…keep a few around. I have put this one to use before.

Next step…testing the servo


wires for the win

For this, I broke out my motor shield. It doesn’t have any features that would benefit this project…the servo areas are basically just power, ground, and control. Control pumps into the 16B 10 port, like a jumper…that works for my debug.

Next, implement a fan.

big fan

I'm a big fan.

I snagged this fan from an old tower, I think. I really don’t know. It seemed to react well to a 9V battery, so I tried it with a 5V source…same deal. Awesome. I used a zip tie to fasten this to that, that being the Altoids enclosure.

This thing needs a base…man-clamp to the rescue:



I picked this up, to use it as a soldering base. That ‘x-tra’ hands piece of shit that I have previously posted in pictures didn’t cut it. This is the manly version. And, it works great for this project, I believe…you can decide based upon the vid. Here is what it looks like, with some more detail.


clamp in action

Let’s add some code…oh no…sounds like we’ve reached the BALLIN ASS SNIPPET ZONE


Servo myservo; // servo opbect

int pos = 0; // initialize

void setup()
myservo.attach(10); // digi pin 10

void loop()
for(pos = 0; pos < 180; pos += 1) // from 1 to 180 { myservo.write(pos); // moves servo delay(20); // waits 20 ms } for(pos = 180; pos>=1; pos-=1) // sweeps span between 180 and 1
myservo.write(pos); // moves servo
delay(20); // waits 20 ms

If that looks familiar, it is because it pretty much the sweep example from the Arduino IDE. No changes necessary…I like when that happens.

Here is the final product:


I'm a big fan of this little fan. Sorry.

Not bad, for a quick slam-together exercise. It isn’t really robotic, since it has no sensors. I could bump this up a notch with some IR LEDs, or my PIR sensor, but that is for another time.

Blah blah blah, stay tuned, blah blah. Until then.