Below is a link to the raspberrypi.org site that has an article about Rick Adam who has created a timelapse dolly for way less than a professional rig would cost. The setup uses a raspberry pi to drive the motor and take the picture. Impressive project!
Archive for December, 2012
My 5V computer case fan arrived and I was very interested to see if I could power it from the Raspberry Pi. So I turned everything off, and plugged it into the GPIO cable. I had put the case back together with this cable because that makes it easy to access the GPIO. I went to fan manufacture and found that the Red wire was 5V input, the Black wire was ground, and the Blue wire was for the frequency readings. So I used some of the recent F/F jumper cables and plugged GPIO pin 1 into the Red for power and GPIO pin 3 into the black for power. Powered the Raspberry Pi on and right away the fan started up! Success! Now to go on and figure out a way to leave it plugged in and via software be able to control when the fan powers up. And possibly try to get the Blue wire working as well.
This site http://elinux.org/RPi_Low-level_peripherals has a diagram of the GPIO pins.
First picture is the Raspberry Pi powered off… Hard to see, but the fan blades are stopped.
Next two shots are powered and show the lights on the Raspberry Pi and the fan is a blur.
I stumbled across this site today http://hypnocube.com/ and was wondering about a Raspberry Pi controlled version…. They have a kit to buy that is currently $150 for the 4x4x4 cube. Sounds as if custom programming is limited to minimal so that is a bummer. There is a video here of someone who has done this with a Raspberry Pi. His notes about it are here. And there are some videos of people running it off an Arduino. Here is the youtube link to a demonstration of some of the things an 8x8x8 cube (blue) can display. This video and others from the same channel showing what the cube can do are amazing! A tutorial can be found here on a 4x4x4 cube using an arduino.
Great tutorial here on Instructables on how to build a portable Internet radio box. This project includes some soldering, but has good instructions. I am going to look into installing pianobar as that looks like it could be really useful and right at home on the Rasberry Pi.
My gertboard arrived today! So I setup the soldering stuff and went to work on the practice board from Elenco that I bought from Amazon. And I found out real quick that the soldering iron that I have is not high enough quality. The tip did not get evenly hot which made it hard to solder. So I decided to buy a different soldering iron. I bought this one from Adafruit as they have Raspberry Pi and lots of other awesome electronics and DIY kits/parts. So I am assuming that since they say that this soldering iron is a good entry-level tool that it should be worth it. So now the only problem is waiting for that to ship…
I was looking up some instructional videos about the gertboard and came across these three from Element14.
And as mentioned in this video at approximately 6:10 he says that there was only 10 jumper wires that came with the kit, and there are 12 LEDs. So there is not enough jumper cables to connect all 12 LEDs at the same time. So in addition to the soldering iron I bought a pack of these F/F jumper wires and also a pack of M/M jumper wires. This gives me the option of creating my own M/F jumper wires by combining one of each. And these come in packs of 40 so I should have plenty!
Here is a picture of what all arrived in the package from Newark. Gertboard on the left. Small components in bags in the center. And some of the bigger chips in anti-static bags on the right.
Next two images are of the GPIO cable coming out of the case that I posted about previously.
The next two images are of the bare Gertboard. First one is the top of the board, and the second is the bottom of the board.
This video on Vimeo is absolutely amazing! It is a combination of day and night shots that were taken in Yosemite National Park. This next video is also a collection of shots from Arizona and Utah. Both of these videos are absolutely worth the time to watch them. The second video is by a guy named Dustin Farrell and he has some great tutorials on shooting and post processing.
Yosemite – https://vimeo.com/35396305
Arizona and Utah – https://vimeo.com/29950141
I do not understand Newark… But this time I am not complaining! They shipped my Gertboard yesterday and it is on its way to me! I have decided that if I ever buy anything from Newark the best plan is to buy it, then forget about and do not check the ship date on their website. Just wait for an email with the confirmation or better yet wait till it shows up on my doorstep. My previous post here explains some of the problems I had when I originally submitted this order. In Newark’s defense I basically have only bought items that were in extremely high demand, but some customer contact would have been nice. Looking forward to that package arriving!
There is an awesome site here at Raspi.tv where there is lots of good information regarding raspberry pi information. The page here on that site shows how to control a fan and a light from a raspberry pi. This is a project I was wanting to work on after I got a gertboard and learned more about controlling things in the physical world. Also along those lines is how he is controlling a fan from the gertboard here.
As far as the gertboard I ordered… I finally contacted Newark because the ship date has changed about 5 times (sometimes farther away, and other times to a past date) and they said that they should ship in about 2 weeks. Maybe. However, on their site the ship date is now showing Feb 2013… The good news is that I am actually getting a un-built kit. Newark is no longer selling these, but may start to offer a pre-built gertboard. It looks like a site from the UK may still offer the un-built kit, but they don’t ship to the US.