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Preliminary design for Calunium v2 Arduino clone using the ATmega1284P microcontroller.
For more information see blog.stevemarple.co.uk/.
Arduino that generates a Midi CC that is a sin wave with controllable duty cycle, amplitude and offset.
Connecting an Apple II keyboard to a computer with USB is surprisingly easy with a Teensy board. The Apple II uses an ASCII keyboard, which means that rather than returning scan codes, it returns a 7-bit ASCII value. This also means you can't read the state of modifier keys like shift or control independently. The Apple II keyboard in particular doesn't even support lower-case letters (though I've made a bit of a hack for this). They even re-use a couple alpha keys for other characters, so shift-P makes @ and shift-N makes ^. Other late 70s/early 80s home computers like the TRS-80 had a really simple layout like the Apple II's (though the TRS-80 had all four arrow keys but no Control key). I may have to try out adapting some other weird old home computers as USB keyboards -- the C-64 seems like it would be a good shape/size for that. (from afiler.com)
Arduino (Teensyduino) code is available at github.com/afiler/keyduino.
A simple circuit to switch multiple strands of EL wire on/off independently using an Arduino microcontroller. I used ST Microelectronics Z0103MA triacs.
Closely based on Cyphunk's circuit
Imagine Dragons - Believer - Arduino Cover! We have used Arduino to control the push pull solenoids.
Full Video ▶ youtu.be/CnglySlS_HU
Code, Circuit and details ▶ teenenggr.com/2019/12/25/imagine-dragons-believer-arduino/
Believer drum cover is played using midi file, Arduino SD card shield is used to read midi files from SD card.
I like this simple 5V power regulator (GoodLuckBuy “Arduino 5V/1A Power Module LM340 Voltage Chip” SKU: 75987). It has screw terminals for the 5 volt output and a 2.1mm Arduino style input jack. The power switch and a green power LED also make this thing easy to use. The Fluke 87 V measured 5.072V output which is good.
However the battery pack (Deal Extreme “6 x AA Batteries Holder with DC2.1 Power Jack for Arduino“ SKU: 126413) at the back is terrible. After inserting the batteries I have to push the long edges and roll the batteries around to ensure I get a circuit and power out of it. The far right and far left batteries are held too tight and can be inserted without making contact with one end. If I bump it or breath on it the wrong way the circuit is broken and power is lost. The whole thing is unreliable, barely usable and very crappy. I recommend avoiding this product.
Crude tone generator - not really a theremin though.
www.psychicorigami.com/2010/06/13/arduino-tone-generatort...
My Arduino DSO (DIgital Storage Oscilloscope).
Has trigger and time base adjustments.
More project details here: www.dayofthenewdan.com/projects/arduino-dso
A Sparkfun accelerometer rigged up to an Arduino which samples it and sends the data to the host computer. Fairly straightforward.
A 3.3V 8MHz Arduino Pro connected to an XBee Series 2.5 and a battery. The other Xbee is on the Sparkfun Explorer USB and connected to a Python program that responds to the Arduino's calls.
The long exposure shot lights up the LEDs :o
My take on the arduino based PC ambient lighting project posted here: siliconrepublic.blogspot.com/2011/02/arduino-based-pc-amb...
I used the same embedded arduino code and wiring setup to get it working, but main difference is that I used Python code instead of Processing for the desktop client, and I used an arduino proto shield to make a compact package that I could hide on my desk. I'm still tweaking the code so that it can work with fullscreen applications like games and average all 3 monitors instead of the center, but as it is now it works really well.
WIP python code: dl.dropbox.com/u/9993009/AmbiLight.py
In this open lab you have the chance build a motor controlled drumstick. Participants will learn how to assemble the parts and program an arduino microcontroller.
credit: CC0
Arduino Heartbeat sensor, sends OSC messages over ethernet at every beat.
I've been working on this on-and-off over a few months:
cmpercussion.blogspot.com/2009/07/heartbeat-sensor.html
And now I'm using it in a performance in Canberra!
Using the Arduino to control a 7-segment LED via a 3:8 multiplexer. Rapidly switching between lit segments allows for the display of individual characters. See an annotated version of a similar circuit. NB: the DIP switch shown here is not actually hooked up. The Arduino's taken its place as inputs to the decoder.
You can see video of this setup spelling out the world 'hello' and one of it being used with different software to animate a single segment around the display, as well.
LCD is upside down on the table. Circuit board is mated to it along the top, spacer support the bottom. Freetronics LeoStick (Arduino Compatible). Freetronics RTC. Cables run to buttons, LDR and power.
The LCD backlight is dimmed based on the ambient light.
$9 ARDUINO and a Piezo buzzer plays shave and a haircut. The code for this is from the ARDUINO software download.
Our third Arduino 101 class at Tam Makers went really well. I taught this evening course with co-instructor Donald Day on Thursdays, from June 16 to 30, 2016, at the woodshop in Tam High School in Mill Valley.
We worked with an enthusiastic group of seven students, including adults with diverse backgrounds, as well as a couple high school students. Our partner Geo Monley worked both as a mentor and as a student during the hands-on sessions.
We started the class at 6pm, by giving students an overview of how circuits work. We then learned how to use a multimeter, how to solder electronics, and how to control rainbow-colored NeoPixel lights.
Students seemed to really enjoy this class and told us they learned a lot from it. Several expressed an interest in taking intermediate and advanced classes in the future. This is one of our first maker courses at Tam Makers, and we’re really happy that it is going so well; we look forward to teaching more classes in the fall.
View more photos of this Arduino course:
www.flickr.com/photos/fabola/albums/72157659914570948
Learn more about this Arduino 101 class:
www.tammakers.org/arduino-101/
Read our Arduino 101 Guide:
bit.ly/arduino-101-guide-june-2016
Check out our course slides:
bit.ly/arduino-101-slides-june-2016
Learn more about Tam Makers:
A Sparkfun accelerometer rigged up to an Arduino which samples it and sends the data to the host computer. Fairly straightforward.
Uses SRF05 to send ultrasonic pulses and calculate the distance. Lights up the LED the closer an object is :) demonstrated in this case by Judes hand
More info is at: luckylarry.co.uk/2009/07/arduino-sonic-range-finder-with-...
I made this housing for an Arduino Pro that will control my waveguide relay in my 47 GHz radio. This housing is made from 6061 billet aluminum. The cover is held on with a dozen 0-80 screws. Shown here is the filtered DC feedthrough.
Here's the finished, working ToyBot.
Mouse over the picture to see notes describing the various parts.
ToyBot is made from a cheap RC toy car. I took out the radio electronics and put in an Arduino microcontroller and an Adafruit Motor Shield motor controller and some sensors.
ToyBot drives around the floor looking for light (or for shade, if it's too hot). When it finds a good spot it stops and goes to sleep. It wakes up when the light or temperature changes, and resumes driving.
Stripboard layout to build a basic Arduino compatible circuit. (Shown from the top top side of the board). More info and build instructions here.