Archive for the ‘arduino’ Category
May I introduce my second ARDUINO-project with own pcb. With the pcb I am able to drive seven brushless pumps(with integrated electronics). The “problem” with such kind of pumps is that they don’t accept unfiltered pwm-signals as supply voltage. So I created a circuit where the pwm-signals of an ARDUINO-micro are level-shifted to 12V with a darlington array and afterwards filtered with a 1 uF ceramic capacitor and a 730 Ohm resistor (low pass filter). The signals are then led into the adjust-pins of seven “lm317″s. To work properly I needed to connect the adjust-pins also with 2500 Ohm resistors to gnd, but I found out that with two l293d instead of the used TDP62783 (darlington array) these resistors are not needed, but different resistor and capacitor values for adequate filtering!
The pums also have tacho signals which I connected via schottky-diodes to the ARDUINO (inputs with pullup). With the tacho-signals I am able to find out if pumps are stuck, are sucking air or are not connected.
Additionally I added one ACS712-05B current sensor (which measures the entire current of the circuit) that could be used to find out if pumps that don’t have tacho-signals are working properly. At the moment it is not used.
Besides that I integrated a lm386 audio-amp used to amplify the signal of an electret-mic to a level that is suitable for the ATEMGA’s ADC.
As the first project for the pcb I created a fountain consisting of a shortened wine barrel, seven brushless pumps, a pushbutton with led and pebbles (s. video).
There are seven animation-modes which can be selected via the pushbutton (the selected mode is stored in eeprom).
The speed of the pumps is checked permanently during operation.
The average power consumption is ~20W and max. consumption is 30W.
30 Arduino TRE Developer Edition boards (the last ones!) are available online today on our store. Whoever purchases them will be added to our Beta-testing Program, joining the about hundred betatesters already contributing to the development of the hardware and software of the board.
UPDATE, December 15th: the boards sold out over the weekend and are no longer available on our store.
You can learn about the program and the board on this post. These boards have the latest Web IDE pre-installed and ready to go, we are now at a stable IDE release with everything fully functional. We will write a specific post about the new Web IDE next week, so stay tuned!
The first round of the program focused mostly on hardware and software testing, and we have just rewarded the betatesters who contributed the most. We really would like this second round to revolve around contents creation. For all Arduino boards, examples and projects are really crucial to get beginners started with a new environment. This is even more relevant for the Arduino TRE, that thanks to the onboard Linux system, has so much more power and potential than classic Arduinos.
For instance you could use the Arduino TRE as a personal cloud, keeping all your data available to your connected devices without having to rely on third party services; you could create a system to stream music wirelessly to your speakers with a tangible user interface; build a DIGI software that allows ZigBee porting; make an interactive whiteboard for schools, and so on.
We have a reward system in place for completed projects: two coupons of the same value of the Arduino TRE Developer Edition purchased, a dedicated post on our blog, Arduino TRE limited edition T-shirts, 10% off coupons for the Arduino Store. We look forward to hear about your projects!
When is the Arduino TRE going to be finally on the market? The board is ready, but we don’t have a final release date yet because we are still figuring out some manufacturing matters. We’ll keep you posted!
An example of a project running on an Arduino TRE.
3D Photobooth, Xun Yung and Tien Pham, Maker Faire Rome 2014.
A 3D anaglyph photobooth uses two cameras to capture a 3D picture. Each picture is processed using the Arduino TRE board. It separates the red channel from one camera and the cyan channel from the other, and overlays them together. The result is then printed out on a large photostrip.
This holiday season we have a special package for you. Arduino Xmas Pack contains all you need to make the perfect gift for anybody willing to get into the Arduino world and put their hands on official gadgets and the widely appreciated Arduino Starter Kit.
The Starter Kit walks you through the basics of Arduino and electronics in a hands-on way through 15 projects to build, hack and share something great every day.
Xmas Pack includes (see pic above):
- Arduino Starter Kit in Italian or English
- Arduino T-Shirt (you can choose your size)
- Arduino Mug
- 6 Pins
Arduino Xmas Pack is sold only on the Arduino Store at 100€/124 $ and ships for FREE in US and Europe.
If you want to be sure to receive it for Christmas, check the timing to place orders on this page.
Using a 3d printer means playing with some hardware but especially some softwares. In the tutorial of this week, the fourth tutorial of our series , Kris is going to introduce you how to work with Slic3r, a G-Code generator for 3d printers and basically a tool you need to convert a digital 3D model into printing instructions for your 3D printer. Slic3r is an open source software able to cut the model into horizontal slices (layers), generates toolpaths to fill them and calculates the amount of material to be extruded so that you can reach good results. (more…)
Dmitry Morozov shared with us a new interactive installation called Solarman at the Polytech Museum in Moscow. 2014 and It’s a work he created with Julia Borovaya and Edward Rakhmanov using 64 ultra bright LEDs, 12-channel sound system and 8 electrical nerve stimulation electrodes controlled by Arduino Mega : (more…)
One of the pleasures of watching TV depends on the use of a remote control that allows you to change channels from where you are. In the tutorial of this week, Kristoffer made an add-on to a previous lesson teaching us how to control a computer with a remote control like the one of your TV using Arduino Micro, IR-sensor. The add-on is a custom and colourful 3d-printed case created with Freecad and Materia 101.
December is finally here and we can start thinking about indoor or outdoor decorations for the holiday. Christmas lights are an excellent way to light up any event and a user on instructables wanted to be able to control the lights remotely with text messages. (more…)
“Earth Partitions” installation by artist Melik Ohanian was exhibited at the Centre d’Art Contemporain à Sète in France and it’s composed by two synchronized videos with a dancer and a seismogram, the second being “written” by the first.
The dancer with two controllers in the hands was asked to “translate” into corporal expression and movements what he saw in a seismogram of an earthquake . His movements were consequently “translated back” to a seismogram using a device. Both the mime and the seismograph were filmed at the same time and both were then broadcasted simultaneously on two different screens during the exhibition. (more…)
Ikea hacks are well widespread in the maker movement and David Bliss, founder at Nurun, did a great job transforming the Death Star inspired PS 2014 Pendant Lamp into something more dynamic.