its a kind of multi purpose extension board, check it out.
https://blog.hackster.io/pi-zero-docking-hub-adds-a-plethora-of-connection-options-8fd73e3599a9
Showing posts with label raspberry pi. Show all posts
Showing posts with label raspberry pi. Show all posts
this looks like an interesting addition to the raspi Zero
I teach engineering at a private German technical college, and do some private consulting work. I also spend a lot of time working robots and other such projects, traveling painting, writing, thinking and learning languages.
My current project, a circuit that can remotely reboot a Rasp Pi.
right now I am working on a reboot circuit for my collecton of Pis.
Here is the basic circuit.
The Pi PCB board ( both the Zero and the larger rasp Pi 2 and 3 versions) feature a connection point where you can add a 2 pin header and create a remote reboot switch. on the rasp pi 2 and three you can see it here:
im building a little board with 8 transistor switches so i can reboot up to 8 Pi's remotely, from a master controller ( here a Raspi Zero)
ill post pics of the board and circuit shortly, and the results of the project.
update 1: i the reset button seems to work with the Zero, but for some reason the LED isnt lighting. still working on it...
Next im going to set up a rasp pi 2b with a header on the run/ground connection and then test the reset with that.
it looks like the prototype will have 5 channels. hopefully 4 of them will work....
Here is the basic circuit.
The Pi PCB board ( both the Zero and the larger rasp Pi 2 and 3 versions) feature a connection point where you can add a 2 pin header and create a remote reboot switch. on the rasp pi 2 and three you can see it here:
im building a little board with 8 transistor switches so i can reboot up to 8 Pi's remotely, from a master controller ( here a Raspi Zero)
ill post pics of the board and circuit shortly, and the results of the project.
update 1: i the reset button seems to work with the Zero, but for some reason the LED isnt lighting. still working on it...
Next im going to set up a rasp pi 2b with a header on the run/ground connection and then test the reset with that.
it looks like the prototype will have 5 channels. hopefully 4 of them will work....
I teach engineering at a private German technical college, and do some private consulting work. I also spend a lot of time working robots and other such projects, traveling painting, writing, thinking and learning languages.
good shop for raspi and arduino projects
a lot of what i use in my projects comes from this store at the link, Sertronics.
i am always looking for suppliers of interesting stuff i can use for projects and experiments, both mechanical and electronic. if anyone knows any good suppliers feel free to share.
i am always looking for suppliers of interesting stuff i can use for projects and experiments, both mechanical and electronic. if anyone knows any good suppliers feel free to share.
I teach engineering at a private German technical college, and do some private consulting work. I also spend a lot of time working robots and other such projects, traveling painting, writing, thinking and learning languages.
Grendel One: background (my hobby/research project)
this is copied and pasted from a post at my element 14 page, enjoy.
I started this project about 2 years ago, after visiting a Maker Faire in Hannover Germany. I saw the NAO robot there, and after doing some research and thinking, realized I could try building a home brew version using a Raspberry Pi. At the time I was working as a full time language teacher here in Germany and wanted a computer test bed to work on language acquisition by computers. After some research and thinking I decided on attempting to build a general purpose robot with a cluster of raspberry pi computers to process all the various tasks. The first version I attempted was based on the MPICH and MPJ interfaces which were not useful for my ideas. it consisted of a head with two axes of movement, and some basic experiments with the camera system and a skeleton operating program. I was also working a research project for the university of Leicester at the time and decided to rework the robot, first by adding a body frame, and second by building my own message passing interface and running asynchronous programs on multiple pis that could adapt to what ever task was required. I used a 1950s Meccano set to build the head and the body; I got it on ebay.uk for about 140 Euros. Meccano is the original English version of the erector set that was popular in America back in the 50s and 60s. Meccano sets are ideally suited as a basis for a beginner home brew robotics project. There are lots of after market dealers that sell all the parts you need for building anything you need, and for about 150 Euros you can buy a big starter set that should def allow you to build something useful and play around with the parts. Since all the parts are drilled, it makes it easy to devise mounting systems for circuit boards, and other devices, and you can build a rigid, relatively light weight structure of your own design for a reasonable price.
I started by building a head, with two axes of movement, allowing the cameras to swivel up and down and left and right. I didn’t really use any formal plans, just some back of the napkin sketches: I knew I needed framework to hang the cameras and microphones on that swiveled. Eventually I hope to expand to having arms and a system of movement for basic mobility, but some kind of device to carry cameras, distance sensors, microphones and speakers is essential in any such project. It took about 3 days to come up with a suitable design that could carry one or two raspberry pis, two servos and the cameras. Later I decided to add an Arduino to control the servos and simply send short commands from one of the pi’s to the Arduino. I started developing the software, the old version of which you can find at my github site, based on a test cluster of 3 raspberry pis.
In the next part ill talk about how developing the software for the first version led to the new version.
here is a link to a white paper i wrote on the project:
https://www.element14.com/community/servlet/JiveServlet/downloadBody/87820-102-1-369087/uploadFile.txt.zip
I started this project about 2 years ago, after visiting a Maker Faire in Hannover Germany. I saw the NAO robot there, and after doing some research and thinking, realized I could try building a home brew version using a Raspberry Pi. At the time I was working as a full time language teacher here in Germany and wanted a computer test bed to work on language acquisition by computers. After some research and thinking I decided on attempting to build a general purpose robot with a cluster of raspberry pi computers to process all the various tasks. The first version I attempted was based on the MPICH and MPJ interfaces which were not useful for my ideas. it consisted of a head with two axes of movement, and some basic experiments with the camera system and a skeleton operating program. I was also working a research project for the university of Leicester at the time and decided to rework the robot, first by adding a body frame, and second by building my own message passing interface and running asynchronous programs on multiple pis that could adapt to what ever task was required. I used a 1950s Meccano set to build the head and the body; I got it on ebay.uk for about 140 Euros. Meccano is the original English version of the erector set that was popular in America back in the 50s and 60s. Meccano sets are ideally suited as a basis for a beginner home brew robotics project. There are lots of after market dealers that sell all the parts you need for building anything you need, and for about 150 Euros you can buy a big starter set that should def allow you to build something useful and play around with the parts. Since all the parts are drilled, it makes it easy to devise mounting systems for circuit boards, and other devices, and you can build a rigid, relatively light weight structure of your own design for a reasonable price.
I started by building a head, with two axes of movement, allowing the cameras to swivel up and down and left and right. I didn’t really use any formal plans, just some back of the napkin sketches: I knew I needed framework to hang the cameras and microphones on that swiveled. Eventually I hope to expand to having arms and a system of movement for basic mobility, but some kind of device to carry cameras, distance sensors, microphones and speakers is essential in any such project. It took about 3 days to come up with a suitable design that could carry one or two raspberry pis, two servos and the cameras. Later I decided to add an Arduino to control the servos and simply send short commands from one of the pi’s to the Arduino. I started developing the software, the old version of which you can find at my github site, based on a test cluster of 3 raspberry pis.
In the next part ill talk about how developing the software for the first version led to the new version.
here is a link to a white paper i wrote on the project:
https://www.element14.com/community/servlet/JiveServlet/downloadBody/87820-102-1-369087/uploadFile.txt.zip
I teach engineering at a private German technical college, and do some private consulting work. I also spend a lot of time working robots and other such projects, traveling painting, writing, thinking and learning languages.
how to use GPIO pins on a raspberry pi in java.
how to access the GPIO pins on a raspberry pi computer in the java development environment.
http://pi4j.com/install.html
http://pi4j.com/install.html
I teach engineering at a private German technical college, and do some private consulting work. I also spend a lot of time working robots and other such projects, traveling painting, writing, thinking and learning languages.
Sensor Kit X40 einführung
Nutz-voll Sensoren
http://sensorkit.joy-it.net/index.php?title=Hauptseite
http://sensorkit.joy-it.net/index.php?title=Hauptseite
I teach engineering at a private German technical college, and do some private consulting work. I also spend a lot of time working robots and other such projects, traveling painting, writing, thinking and learning languages.
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