Archive for the ‘Micro’ Category

This DIY stepper motor clock is weird yet wonderful

Friday, July 22nd, 2016

Just when you thought you’ve seen every possible kind of Arduino-driven clock, another one emerges. This “DIY strange-looking” device takes the form of a wheel with times written on it, which is rotated using an Arduino Micro and a 5V stepper motor. And while it may not be the most accurate timekeeper out there, it’s an excellent way for Makers to explore electronics, programming, and even geometry.

Unlike most clocks that have either two or three hands going around a 12-hour face, 17-year-old Instructables user “Electronics for Everyone” chose a fixed pointer to denote the time in 10-minute intervals instead.

The idea behind the clock is a circle with a circumfrence of 72cm that ticks at 1cm every 10 minutes, which means every 72 ticks will equal 12 hours…

You can find an entire breakdown of the build, along with its measurements and code, on its project page here.

Ride an Arduino-powered longboard with speed-reactive LEDs

Saturday, June 18th, 2016

For a recent column in the Dutch newspaper de Volkskrant, Rolf Hut built a slick longboard with LED strips that respond to speed. If you think that sounds awesome, wait until you see it in action.

As the Maker explains, four magnets and a Hall effect sensor are used to measure the longboard’s speed so the Adafruit NeoPixels can react at the same pace. To achieve this, the magnets are glued to the inside of each wheel, while a Hall sensor counts the number of revolutions and sends that information over to one of two Arduino Micros. The first Arduino translates that into a speed, while the second Micro converts that speed into a signal for the LEDs. Everything is powered by a power bank. (more…)

NS1 Nanosynth the hackable analog synthesizer is back!

Friday, December 18th, 2015

ns1

We’ve been playing with NS1 Nanosynth in the last few weeks, when it first appeared under our radars on the Christmas’ Gift Guides (while going sold out in few days, after Synthopia blessed it with this interesting review).  It’s a hackable and customizable analog synthesizer coupled with an Arduino Micro platform.

Personally, it was one of my first steps into modular synthesizers. Nice sounds, easy approach. Peter Kirn is perfectly picturing this amazing compromise here!

Synths: they’re fun to tweak and play. Modulars: they’re fun to patch. Arduinos: they’re fun to hack. Small things: they’re fun to carry around.

But how to track patches? How to share sounds with friends? I was playing mainly with my son, and managed to print out a paper sketch depicting all the different pinout of the synth. I wasn’t satisfied with that, I needed more! (more…)

A low-cost approach to Intrinsic optical signal

Monday, November 16th, 2015

iosic

Leonardo Lupori and Raffaele Mazziotti are active in the field of neuroscience at Tommaso Pizzorusso’s lab at Neuroscience Institute CNR of Pisa respectively as molecular biologist and experimental psychologist. They created an Arduino-based and MATLAB-controlled tool called IOSIC (Intrinsic Optical Signal Imaging Chamber), powered by an Arduino Micro and focused on intrinsic optical signal (IOS) imaging apparatus to run experiments on the plasticity of the brain.

Intrinsic optical signal (IOS) imaging is a functional imaging technique that has revolutionized our understanding of cortical functional organization and plasticity since it was first implemented, around 30 years ago. IOS is produced by the brain when processing information and is similar to the information recorded with the plethysmograph (the instrument to measure heart rate from a finger) and it is useful to investigate how the brain works. The researchers are especially interested to investigate how the brain is able to adapt to the environment to store information but also acquire new skills and these studies are really useful to understand what happens to the brain when is in good health or during a disease. (more…)

Automating a bubble blaster with Arduino Micro

Friday, September 18th, 2015

bubble
Thomas Renck is a coder and a maker. He went to Disneyland, saw a bunch of little kids having fun with bubble guns and realized that a bubble blaster is a sure way to measurably improve joy and happiness in life.

Back home, it took only two hours to create and add-on to automate the bubble blaster using a 3d printer, Arduino Micro and a servo: (more…)

A DIY Seizure Alarm based on Arduino Micro

Tuesday, August 11th, 2015

seizurealarm

Chad Herbert’s son Daniel was diagnosed with Benign Rolandic Epilepsy in 2014. It’s a type of epilepsy the Epilepsy Foundation says accounts for about 15 percent of all Epilepsies in children and the good news is that most children grow out of it.

The bad news is that Daniel’s most affected by his condition at night or early morning while he sleeps. That’s why Chad invested in a sleep monitor/alarm for his bed that detects when he’s having a full tonic-clonic seizure. (more…)

An open hardware quartz crystal microbalance

Monday, March 23rd, 2015

openQCM

Marco Mauro is a physicist currently employed as Scientific Coordinator at Novaetech, the first Spin-off Company of the National Institute for Astrophysics (INAF) in Italy. He shared with us all the info about a project he’s been working on  and based on Arduino Micro.

OpenQCM is a fully open source scientific microbalance capable of weighing mass deposition down to 1 billionth of gram: (more…)

Make a 3D printed LEGO-compatible Arduino Micro casing

Thursday, January 15th, 2015

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Here we are after winter break with a new tutorial on 3d printing with Arduino Materia 101. The 5-step tutorial allows you to design a Lego-compatible case for the Arduino Micro to be used together with the power function IR-receiver mentioned in this other Tutorial. (more…)

Programmable 3d-printed decorations for your Xmas

Wednesday, December 17th, 2014

3dprint-star

We can’t miss the chance to play with some LEDs now that holidays are coming and mix some electronics with 3d printing on Materia 101.

In the tutorial of this Kristoffer is experimenting on Xmas decorations, Arduino Micro and some code to play around with. (more…)

7 brushless pumps for a fountain controlled by Arduino Micro

Tuesday, December 16th, 2014

fountain
Using Arduino Micro to control a fountain is the project shared by Michael Diesing on Twitter:

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.

(more…)