There are very many cool Arduino projects and project sites in Internet (make Google search to see). Here are some interesting links to check out:
Arduino Projects at indestructables
Top 40 Arduino Projects of the Web
Arduino Rising: 10 Amazing Projects People Are Doing With The Tiny Microcontroller
Electronics For The Everyman: 25 Kick Ass Arduino-Powered Projects
10 Simple-But-Fun Projects to Make With Arduino
Internet of Thing with Arduino
11 Arduino projects that require major hacking skills—or a bit of insanity
I will be posting more links to more interesting projects as comments to this post, like I did in my Cool uses for the Raspberry Pi posting. Some of the most interesting that spend some more time at can get their entire own postings this blog in Arduino section.
2,953 Comments
Tomi Engdahl says:
Fingerprint Scanner Both Simplifies And Complicates Opening Garage Door
http://hackaday.com/2014/06/25/fingerprint-scanner-both-simplifies-and-complicates-opening-garage-door/
[nodcah] is one of those people so he came up with a fingerprint scanner that controls a pre-installed garage door opener. All kidding aside, it is a cool project that lets you into your garaage, keeps unknown people out and doesn’t require you to remember to carry a key or remote.
Tomi Engdahl says:
Driving 1000 NeoPixels With 1k Of Arduino RAM
http://hackaday.com/2014/05/19/driving-1000-neopixels-with-1k-of-arduino-ram/
NeoPixels, or WS2812 RGB LEDs, are the display device du jour for impressive and blinding lighting projects. Commonly known for very tight timing requirements, [Josh] discovered this is, in fact, usually unnecessary. The timing requirements for NeoPixels aren’t as bad as they seem, once you get to know them.
Realizing this, [Josh] wrote a simple demo program to drive over 1000 NeoPixels – an 11 meter long strip – using 1K of RAM on an Arduino. The trick comes by simply delaying the bitbanging a set number of cycles. No obtuse assembly required.
Here Come the RGB LED Clones
http://hackaday.com/2014/06/25/here-come-the-rgb-led-clones/
It seems like every third project on Hackaday uses WS2812 RGB LEDs in some way. We all love our blinkenlights, and bright, cheap, serial controlled RGB LEDs are the bees knees.
As with all products these days, competing manufacturers have discovered the huge market for these things, and clones are now available. [Tim] recently took a look at the PD9823, as well as three versions of the WS2812.
As many of us know, the timing characteristics for these LEDs can be a pain to work with.
Tomi Engdahl says:
Pew Pew! An Arduino Based Laser Rangefinder
http://hackaday.com/2014/07/01/pew-pew-an-arduino-based-laser-rangefinder/
Inspired by a Arduino based LIDAR system, [Berryjam] decided that he wanted to successfully use an affordable Open Source Laser RangeFinder (OSLRF-01) from LightWare. The article starts off by going over the basics of how to measure distance with a laser based system.
Tomi Engdahl says:
You Can Play Tetris on Your T-Shirt Now
http://news.softpedia.com/news/You-Can-Play-Tetris-on-Your-T-Shirt-Now-449303.shtml
Tetris had its 30th anniversary back on June 6, and a video game enthusiast has decided to celebrate the timeless game by creating a T-shirt that plays it. Definitely a step up from the sound-activated LED T-shirts that some people are wearing at parties.
“Here is a project I just finished, just in time for the 30th anniversary of Tetris. a T-Shirt you can play. with an Arduino Uno, 4 AA batteries and 128 LEDs. I always wanted a playable T-shirt, well now I made one myself. Based on the pumpktris instructables,”
Tomi Engdahl says:
C64 Emulator For The Arduino Due
http://hackaday.com/2014/07/06/c64-emulator-for-the-arduino-due/
Almost a year ago, [miker00lz] started a thread on the Arduino forums telling everyone about a 6502 emulator and BASIC interpreter he wrote for an Arduino Uno. The chip inside the Uno isn’t a powerhouse by any means, and with only 2KB of RAM it’s far less capable than just about any computer from the 70s. Arduino works on a lot of different chips, though, and after a few months, [Jan] turned an Arduino Due into a Commodore 64 emulator.
[Jan]‘s code isn’t limited to the DUE, and can be used with any chip with enough memory.
Tomi Engdahl says:
Hey There Little Plant. Let’s Be Friends!
http://hackaday.com/2014/07/22/hey-there-little-plant-lets-be-friends/
Created by [Dickson], this project monitors soil moisture, air temperature, and air humidity of your indoor plants and will alert you via email and SMS when your plants are thirsty. No longer will your sprouts shrivel up in the sun, but rather, they will be well-hydrated ready to produce their veggie goodness.
The system is battery operated, wireless, Arduino and Raspberry Pi based and comes with an Android app, which in turn allows you to view real-time and historical data
Tomi Engdahl says:
Long Range Wireless Sensors for the Home-Area-Network
http://hackaday.com/2014/07/19/long-range-wireless-sensors-for-the-home-area-network/
[Eric] hopes his work will help bring the truly expansive Home-Area-Network (HAN) into fruition by letting developers build cheap, battery-powered, long-range wireless sensors. His method integrates with the pluggable OSGI architecture and home automation platform openHAB along with using an Arduino as the lower power, sensor node that is capable of utilizing many types of cheap sensors found online.
[Eric]’s tutorial depicts a few examples of the possibilities of these open-source platforms. For instance, he shows what he calls a ‘Mailbox Sentinel’ which is a battery-powered mail monitoring device that uses a Raspberry Pi to play the infamous, and ancient AOL sound bite “you’ve got mail.” It will also send an email once the postman cometh.
The key to making this project work, as [Eric] states, is the MQTT binding that ties together the Ardiuno and openHAB platform.
Tomi Engdahl says:
Solar Powered DIY Plant Watering System
http://hackaday.com/2014/07/16/solar-powered-diy-plant-watering-system/
An Arduino serves as the brain of the system. It’s programmed to check a photo resistor every ten minutes. At 8:30PM, the Arduino will decide how much to water the plants based on the amount of sunlight it detected throughout the day. This allows the system to water the plants just the right amount. The watering is performed by triggering a 5V relay, which switches on a swimming pool pump.
[Pierre] obviously wanted a “green” green house, so he is powering the system using sunlight. A 55 watt solar panel recharges a 12V lead acid battery.
Tomi Engdahl says:
Quick and Dirty RFID Door Locks Clean up Nice
http://hackaday.com/2014/07/18/quick-and-dirty-rfid-door-locks-clean-up-nice/
Tomi Engdahl says:
The RC White House Robot
http://hackaday.com/2014/07/27/the-rc-white-house-robot/
This remote controlled, Arduino-based robot was created by a young student named [Quin] who likes to teach electronics classes at hackerspaces. It is an adaptation of this awesome, fast, fully autonomous mini Roomba that has since driven its way into the Presidential building during the 1st ever White House Maker Faire.
The quick, little device uses a robot chassis kit with an XBee wireless module so that the controller and the robot can be connected together. An NFC Shield was hacked and split in half so that the wires could be soldered in place.
The controller container was made with an open source 3D printer called a Bukobo
Tomi Engdahl says:
A Lego/Arduino Game Controller
http://strangemeadowlarkprojects.blogspot.fi/2014/05/a-legoarduino-game-controller.html
It all started a few weeks ago when I discovered that someone posted instructions for making an Arduino Uno R3 emulate USB HID devices such as keyboards and mice. I’d been itching to use my Arduino for this kind of thing for awhile now, but while newer model Arduinos like the Leonardo have built-in USB support, I have an older Uno R3. I suppose I could have gone out and bought the newer model, but I’m cheap and like to use what I already have.
Tomi Engdahl says:
Arduino USB HID Keyboard
http://mitchtech.net/arduino-usb-hid-keyboard/
Turn your Arduino UNO into a USB HID keyboard, and make buttons that do whatever you want. Make it a useful tool, with new buttons for Cut/Copy/Paste or Volume+/Volume-/Mute, or annoy your friends and colleagues by setting the keyboard to perform random keypress after random delays!
Tomi Engdahl says:
Paperduino: How to Print a Paper Arduino
https://www.youtube.com/watch?v=_xv2w2AFxl8
Tomi Engdahl says:
Paperduino – Arduino printed on paper with conductive ink
http://diy3dprinting.blogspot.fi/2014/01/paperduino-arduino-printed-on-paper.html
Tomi Engdahl says:
800 inches per minute at 0.00025″ Resolution
http://hackaday.com/2014/08/28/800-inches-per-minute-at-0-00025-resolution/#more-130718
The folks over at PONTECH have just released a pretty impressive opensource PIC32 library for controlling a linear slide at speeds of 800 inches per minute!
PONTECH makes the Quick240 (Quick Universal Industrial Control Kard) which is based on the open source chipKIT platform. It was designed for industrial automation systems, where typically a ladder logic PLC might be used.
Did we mention it is also Arduino compatible?
Tomi Engdahl says:
The ChalkJET: An Ink Jet Printer For The Streets
http://hackaday.com/2014/08/29/the-chalkjet-an-ink-jet-printer-for-the-streets/
Need to do some guerrilla street advertising? What you need is the ChalkJET 9000, an ink jet printer on wheels.
Using two Arduino Duemilanoves for the brains, this little cart features eight cans of spray chalk which can be individually actuated. Small solenoids pull down on levers in order to spray the cans.
Tomi Engdahl says:
Pokewithastick, an Arduino programmable web-logger/server
http://hackaday.com/2013/10/08/pokewithastick-an-arduino-programmable-web-loggerserver/
[Stewart] tipped us about his very nice project: pokewithastick. It is an Arduino compatible board (hardware, not footprint) based on the ATMEGA1284P which can be programmed to collect and post data to internet logging sites such as Thingspeak or Xively.
As you can see in the picture above, it has a small 50x37mm footprint (roughly 2″x1.5″). The pokewithastick is composed of an Wiz820 Ethernet module, a micro-SD card slot, 2 serial ports, one battery backed Real Time Clock (RTC), one radio connector (for the usual nRF24L01 2.4GHz radio), one power & user LED and finally a reset button.
Tomi Engdahl says:
Arduino-based LED Wedding Lights
http://hackaday.com/2014/08/31/arduino-based-led-wedding-lights/
[Rob] created these amazing Bluetooth controlled LED lights for his daughter’s wedding adding a colorful ambient glow to the ceremony. Each item held a Neopixel ring and an Arduino microprocessor with a wireless module that could be individually addressed over a ‘mini-network.’ The main master station would receive commands from a Windows Phone.
Tomi Engdahl says:
Gemma-Powered NeoPixel Sound Reactive Drums
http://hackaday.com/2014/08/26/gemma-powered-neopixel-sound-reactive-drums/
This tutorial from Adafruit shows how to create a custom interactive drum set that lights up with sound. It uses a mic amp sensor that is connected to a miniature Arduino Gemma board to detect when the instrument is being hit by the sticks. Neopixels then illuminate into a range of colors creating a beautifully synced up music presentation.
Tomi Engdahl says:
Atmel Shows American Pride at White House Maker Faire
Posted Aug 28, 2014 at 7:27 am
http://www.eeweb.com/blog/eeweb/atmel-at-white-house-maker-faire
“Today’s DIY is tomorrow’s ‘Made in America,’” President Obama proclaimed in his opening remarks at the White House Maker Faire in June of 2014. With the rise of open-source hardware like the Arduino Uno, the limits of innovation, manufacturing, and technology have become boundless. To commemorate the rise in DIY innovation, the White House sponsored its first-ever Maker Faire in Washington DC and invited makers of all ages from around the country to show off their innovations. Projects ranged from robotic giraffes to a mobile 3D printing fab lab—all of them demonstrated for President Barack Obama himself.
These makers, as well as makers across the globe, have embraced the easy-to-use hardware and software of the Arduino platform, based on Atmel 8 bit (AVR) or a 32 bit (ARM based) microcontrollers (MCU). Cited for their ease-of-use, low-power, and high-performance capabilities, the AVR MCUs have enabled designers, inventors, and even school children to learn and innovate at a previously unheard of level. Atmel’s connection with the Arduino boards earned them an invitation to this year’s Maker Faire to see the variety of projects their MCUs have powered. EEWeb spoke with Sander Arts, vice president of marketing at Atmel, about his experience at the White House and how being involved in the maker community will enable the next generation of entrepreneurs.
With the rise of Kickstarter campaigns and other crowd-funded tech projects, Atmel embraced the ever-growing DIY community as the new frontier for tech innovation.
Tomi Engdahl says:
Homemade Activity Monitor
http://hackaday.com/2014/09/01/homemade-activity-monitor/
A group of developers have uploaded a tutorial on Instructables showing the steps needed to develop a homemade DIY fitness tracker. The design is the second iteration of an Arduino-based wearable smart watch project of theirs.
The microcontroller used is an Arduino Pro mini 3.3v. Accelerometer and gyro sensors were integrated to capture the movement of the ‘RetroBand.’ A wireless bluetooth module connects to an Android phone which presents the data through a Play Store app complete with graphs included.
Tomi Engdahl says:
Arduino-Powered Alarm System Has All The Bells And Whistles
http://hackaday.com/2014/09/02/arduino-powered-alarm-system-has-all-the-bells-and-whistles/
Put aside all of the projects that use an Arduino to blink a few LEDs or drive one servo motor. [IngGaro]‘s latest project uses the full range of features available in this versatile microcontroller and has turned an Arduino Mega into a fully-functional home alarm system.
The alarm can read RFID cards for activation and control of the device. It communicates with the front panel via an I2C bus, and it can control the opening and closing of windows or blinds. There is also an integrated GSM antenna for communicating any emergencies over the cell network.
Tomi Engdahl says:
Arduino anti-theft alarm shield
http://hackaday.io/project/2519
Complete anti-theft alarm compatible with any kind of sensors, with RFID recognition, GSM and web server, based on Arduino Mega.
This anti-theft alarm is basically an Arduino Mega Shield with fairly complex software.
The system is composed by a main circuit (the arduino shield) installed in an hidden place and an i2c connected “remote control panel” near the main house door, offering LCD, capacitive buttons and RFID recognition.
The whole system may be managed and configured from the webserver; webpages are published in iphone/android webapp format. When the system is alarmed, it sends mail and SMS to the owner.
It also connects to house domotic system (e.g. close rolling shutters when it’s activated).
The project is fully working; I consider it as “99% finished”
The main circuit (Arduino Mega shield): this shield is connected with all the sensors (at the moment, 6 magnetic sensors and 2 volumetrics), the external siren, the ethernet and the GSM module. It is powered by a small UPS with a 2,2 Ah battery, enough to make it working for some hours if the power fall off. The siren has an independent 2 Ah battery too. The circuit communicates with the remote control panel with i2c. The whole circuit is completely hidden in a in-wall mounted box.
Tomi Engdahl says:
Upgrade Your Garage Door with Arduino and RFID
http://hackaday.com/2014/05/13/upgrade-your-garage-door-with-arduino-and-rfid/
[Jason] really wanted to build an RFID controlled garage door opener and decided to turn to Arduino to get the job done.
The Arduino acts as the brains of the operation while an off-the-shelf NFC/RFID reader module is used to read the RFID tags. To add new keys to the system, [Jason] simply swipes his “master” RFID key. An indicator LED lights up and a piezo speaker beeps, letting you know that the system is ready to read a new key. Once the new key is read, the address is stored on an EEPROM. From that point forward the new key is permitted to activate the system.
Tomi Engdahl says:
THP Entry: A 433MHz Packet Cloner
http://hackaday.com/2014/08/14/thp-entry-a-433mhz-packet-cloner/
The first generation of The Internet Of Things™ and Home Automation devices are out in the wild, and if there’s one question we can ask it’s, “why hasn’t anyone built a simple cracking device for them”. Never fear, because [texane] has your back with his cheap 433MHz OOK frame cloner.
A surprising number of the IoT and Home Automation devices on the market today use 433MHz radios, and for simplicity’s sake, most of them use OOK encoding. [Texane]‘s entry for THP is a simple device with two buttons: one to record OOK frames, and a second to play them back.
Yes, this project can be replicated with fancy software defined radios, but [Texane]‘s OOKlone costs an order of magnitude less than the (actually very awesome) HackRF SDR. He says he can build it for less than $20
Tomi Engdahl says:
ooklone
a cheap RF 433.92MHz OOK frame cloner
http://hackaday.io/project/2403
The OOKLONE device allows you to capture RF signals (or frames) from equipments operating on the 433.92MHz frequency, and replay them at a later time. This way, you can clone the original equipment functionality. Such equipments include device remote controllers. Please see the following videos for examples including wireless wall outlets and car door locks
Tomi Engdahl says:
DIY Oscilloscope using Arduino and Graphic LCD
https://www.youtube.com/watch?v=tOTx_lSTZNA
an Oscilloscope using Arduino Mega 2560 and 128×64 GLCD. It works pretty good for verification of signal the range of input frequency is upto 10-12MHz and Sampling rate is 200KSPS
Tomi Engdahl says:
Create a Fast Arduino Oscilloscope
https://www.youtube.com/watch?v=5ky_N5-Fu6M
In this video I will show you how to create a fast Arduino Oscilloscope using the Arduino Uno (with the Girino Oscilloscope code), an UnoProLogic and a simple C# application running on the PC. This project can be built for less than $60.00. All the code is open source and freely available
Tomi Engdahl says:
ARDUINO + PLC = CONTROLLINO
https://www.youtube.com/watch?v=-N0HXn3TzAo
CONTROLLINO: The first ARDUINO – PLC
http://www.controllino.cc/
Tomi Engdahl says:
Master Clock Keeps Time for All Other Clocks
http://hackaday.com/2014/09/04/master-clock-keeps-time-for-all-other-clocks/
[Brett] just finished construction and long-term testing of this extremely accurate timepiece. It keeps such great time by periodically syncing with the atomic clock in Mainflingen, Germany.
The core of the project is an ATMega328 which uses the new DCF77 library for decoding the signal broadcast by an atomic clock.
In the event of a complete signal loss from the atomic clock, the micro driving the clock also has a backup crystal that can keep the clock running to an accuracy of within 1 second per day. The clock can drive slave clocks as well, using pulses with various timings depending on what [Brett] needs them to do.
DCF77 Master Clock Mk2
http://home.btconnect.com/brettoliver1/Master_Clock_MK2/Master_Clock_MK2.htm
Arduino 328 Microprocessor is used to decode Time & date from the DCF77 “Atomic” Clock in Mainflingen near Frankfurt Germany
The DCF77 signal is decoded using the fantastic new DCF77 library written by Udo Klein meaning the clock stays in sync even with a massive amount of noise on the received DCF77 signal
Tomi Engdahl says:
Environmental Sound Detectors
http://hackaday.com/2014/09/06/environmental-sound-detectors/
We all know that sound. That sound of a noisy yapping dog, or the sound of a disruptive garbage truck loudly picking up the trash while making a ruckus along the way. It can be extremely distracting and frustrating to deal with. And more often than not, we have little control over the noise pollution in the area. Unless of course, you build a monitoring solution to raise awareness of the situation, like this one that [Edmund] made.
An Arduino Pro Mini was the backbone of the project. Being open-source in nature meant that it could be customized easily with a wide array of sensors. [Edmund] chose to use an Electric Imp adding WiFi capability to the device.
Tomi Engdahl says:
Hacking a Disco Laser
http://hackaday.com/2013/09/18/hacking-a-disco-laser/
Mark] was looking for a cheap disco laser projector for parties, and he found one. Unfortunately for him, the advertised features were a bit lacking.
Taking the unit apart revealed a very convenient design for hacking.
he’s posted the source code and circuit diagram on github.
Tomi Engdahl says:
Arduino Powered Digital Kaleidoscope
http://hackaday.com/2014/09/06/arduino-powered-digital-kaleidoscope/
Tomi Engdahl says:
Mood Lighting with LEDs and an Arduino
http://hackaday.com/2014/09/09/mood-lighting-with-leds-and-an-arduino/
The heart of the project is an Arduino Pro Mini, which is especially suited for this project because of its size. [Jose] put the small form-factor microcontroller in the base of a homemade wax enclosure and wired it to a Neopixel WS2812b LED strip. The strip can produce any color, and has some programmed patterns including flicker, fade, rainbow, and fire.
The artificial candle is controlled with an infrared remote control, and all of the code for the project is available on the project site if you want to build your own.
Tomi Engdahl says:
Dude, Where’s My Car?
http://hackaday.com/2014/09/10/dude-wheres-my-car/
Someone just stole your car. They took it right underneath your nose, and you have no idea where it is. Luckily, you have a GPS tracker installed and can pinpoint the exact location of the vehicle that thief drove away with.
Helping to solve the vanishing vehicle problem is the bright, young team at Cooking Hacks who created a step-by-step tutorial showing how to create a homemade GPS tracker. Their design is Arduino based and has a GPS+GPRS shield with an antenna attached to continuously pick up the location of the vehicle. Making a call to the Arduino inside triggers an SMS message to be sent back with the specific GPS data of where the tracker is stationed at. Information is then set to a server and inserted into a database, which can be accessed by opening up a specialized Android app.
Tomi Engdahl says:
Where is my car? Realtime GPS+GPRS Tracking of Vehicles using Arduino
http://www.cooking-hacks.com/projects/arduino-realtime-gps-gprs-vehicle-tracking
Tomi Engdahl says:
Building Pulse & Bloom – an interactive biofeedback installation at Burning Man 2014
http://www.ofbrooklyn.com/2014/09/6/building-pulse-bloom-biofeedback-burning-man-2014/
The circuit board controls all of the lighting, sensors, timing, and debugging sequences. A reliable circuit board couldn’t just be an Arduino and a breadboard.
Tomi Engdahl says:
Safe and simple AC PWM Dimmer for arduino / Raspberry pi
http://www.instructables.com/id/safe-and-simple-AC-PWM-Dimmer-for-arduino-Raspberr/
This circuit shows that dimmers intended for use at mains voltage do not always have to contain a triac.
Here, a MOSFET (BUZ41A, 500 V/4.5A) in a diode bridge is used to control the voltage across an incandescent bulb with pulse-width modulation (PWM). The power supply voltage for driving the gate is supplied by the voltage across the MOSFET.
Tomi Engdahl says:
USB to DB25 Adapter Uses GRBL For Parallel Port CNC Communication
http://hackaday.com/2014/09/16/usb-to-db25-adapter-uses-grbl-for-parallel-port-cnc-communication/
A cheap off-the-shelf USB to DB25 adapter may look like a good idea at first glance but they won’t work for a CNC application. [Bray's] adapter is Arduino-based and runs GRBL. The GRBL code is responsible for taking the g-code commands sent from the computer, storing them in a buffer until they are ready to be converted to step and direction signals and sent to the CNC controller by way of the parallel port DB25 connector. This is a great solution for people needing to control a CNC Machine but do not have a parallel port available.
[Bray] is using a Raspberry Pi running GRBLweb to control his adapter board.
GRBL
http://bengler.no/grbl
Grbl is software for controlling the motion of machines that make things. If the maker movement was an industry, Grbl would be the industry standard.
Most MakerBots and open source 3D printers have Grbl in their hearts. It has been adapted for use in hundreds of projects including laser cutters, automatic hand writers, hole drillers, graffiti painters and oddball drawing machines. Due to its performance, simplicity and frugal hardware requirements Grbl has grown into a little open source phenomenon.
What Grbl has to do in 2kb:
Parse G-Code, a cryptic computer language hailing from the 50s used to describe the idealised actions of milling machines.
Build a model of those actions and translate them into a physically possible sequence of motions for the given machine.
Execute these motions by sending a unwavering stream of concerted high frequency pulses to the stepper motors that are actually moving the tool.
Tomi Engdahl says:
THP Quarterfinalist: WALLTECH Smartwatch
http://hackaday.com/2014/09/17/thp-quarterfinalist-walltech-smartwatch/
While there is lots of hype about a big company launching a new wearable product, we’re more interested in [Walltech]‘s open source OLED Smartwatch.
The device is based on the IMUduino BTLE development board. This tiny Arduino clone packs an inertial measurement unit (IMU), a Nordic nRF8001 Bluetooth radio, and an ATMEGA32u4 microcontroller.
Tomi Engdahl says:
OpenEnergyMonitor
http://openenergymonitor.org/emon/
OpenEnergyMonitor is a project to develop open-source energy monitoring tools to help us relate to our use of energy, our energy systems and the challenge of sustainable energy.
The OpenEnergyMonitor system is an end-to-end open-source energy monitoring system that is Arduino IDE compatible
The emonTx Shield is an open source hardware Arduino shield footprint compatible electricity and temperature monitoring shield that can be connected to any standard Arduino UNO, Leonardo, NanodeRF (for web connectivity and posting to emoncms.org) or even the new Arduino Yun.
Electricity monitoring library
https://github.com/openenergymonitor/EmonLib
Tomi Engdahl says:
A Proof of Concept Project for the ESP8266
http://hackaday.com/2014/09/17/a-proof-of-concept-project-for-the-esp8266/
It’s hardly been a month since we first heard of the impossibly cheap WiFi adapter for micros, the ESP8266.
Since the ESP8266 found its way into the storefronts of the usual distributors, a lot of effort has gone into translating the datasheets both on hackaday.io and the nurdspace wiki. The module does respond to simple AT commands, and with the right bit of code it’s possible to pull a few bits of data off of the Internet.
The code requests data from openweathermap.org and displays the current temperature, pressure, and humidity on a small TFT display.
ESP8266 weather display
http://zeflo.com/2014/esp8266-weather-display/
The wiring is quite simple. The wifi-module needs just two wires for power and two for the serial interface.
Tomi Engdahl says:
Lamp Comes to Life with Ultrasonic Sensors
http://hackaday.com/2014/09/24/lamp-comes-to-life-with-ultrasonic-sensors/
Fans of the bouncing lamp from the Pixar corporate logo will enjoy [Daniel]‘s latest project. It’s a motion controlled desk lamp that uses ultrasonic sensors to control its physical position.
The core of the project is an Arduino and the three ultrasonic sensors.
Motion Controlled Ultrasonic Lamp
http://www.tinkernut.com/2014/09/20/motion-controlled-ultrasonic-lamp/
Tomi Engdahl says:
Automated Watering System Uses Neat DIY Water Valve
http://hackaday.com/2014/09/27/automated-watering-system-uses-neat-diy-water-valve/#more-133472
Tomi Engdahl says:
Arduino Translates Signals Between Steering Wheel Buttons and Aftermarket Head Unit
http://hackaday.com/2014/09/28/arduino-translates-signals-between-steering-wheel-buttons-and-aftermarket-head-unit/
There is no question that steering wheel mounted controls are super convenient. Reaching all the way over to the dashboard to change a radio station is so 1990’s. An ever-increasing percentage of new cars are coming equipped with steering wheel controls for the stereo, however, you’ll lose the button control if you change out the stock head unit to something a little higher in quality.
[Ronnied] took the DIY road and made his own adapter.
Holden Viva Steering Wheel Controls
http://hackaday.io/project/3078
The Steering Wheel Controls are represented as a resistance on a single wire, in respect to ground.
Using one of the Arduino’s 10 Bit ADC inputs, this signal is sampled and matched to one of five possible buttons. A simple voltage divider circuit was used to correctly distinguish each.
The button is then translated to a digital output that serves to directly control the JVC Head Unit.
Tomi Engdahl says:
Ardubracelet Lets you Play Tetris on your Wrist!
http://hackaday.com/2014/09/28/ardubracelet-lets-you-play-tetris-on-your-wrist/
Making your own Tetris game is almost a rite of passage for hackers — [Kevin] has stepped up the game a little by making this awesome-flexible-triple-displayed-Tetris-watch dubbed the Ardubracelet.
It features three super bright OLED screens on a flexible circuit board
At the heart of the flexible circuit board is an Atmega328p
http://www.arduboy.com/ardubracelet/
Tomi Engdahl says:
Arduino Drink Dispenser Turns Quarters into Liquid Courage
http://hackaday.com/2014/10/05/arduino-drink-dispenser-turns-quarters-into-liquid-courage/
Ever feel the need to have your very own alcohol vending machine at home? Well if you do, [Ben] and [Dan] have just the Arduino based machine for you!
The thing we like about this vending machine — we’re not sure if it actually qualifies as a barbot — is that it doesn’t have any fancy pumps. In fact, it just uses two inexpensive solenoid valves and gravity to dispense the drink, much like a typical bar bottle dispenser.
Vodka Vending Machine – Arduino Project
http://www.youtube.com/watch?v=I1SW5q2V-9E
Tomi Engdahl says:
Web Browser Pushes Arduino’s Limits
http://hackaday.com/2014/10/05/web-browser-pushes-arduinos-limits/
[Gilchrist] has finished work on a project that fits squarely in the second category: a web browser that runs exclusively on an Arduino Uno with an ethernet shield.
The Arduino can serve plain-text web pages to an attached LCD and can follow hyperlinks. User input is handled by a small joystick, but the impressive part of the build is on the software side. The Arduino only has 2KB of RAM to handle web pages, and the required libraries take up 20KB of memory, leaving only about 12 KB for the HTML parser/renderer and the LCD renderer.
PIP Arduino Web Browser
Surf the web using an Arduino and an ethernet shield. Because you can.
http://hackaday.io/project/3116-pip-arduino-web-browser
Tomi Engdahl says:
Acoustic Impulse Marker Tracks Sounds With a Pencil
http://hackaday.com/2014/10/07/acoustic-impulse-marker-tracks-sounds-with-a-pencil/
Two students at Cornell University have put together a rather curious sound tracking device called an Acoustic Impulse Marker.
The system uses a three-microphone array to accurately position sharp noises within 5 degrees of accuracy. The microcontroller detects the “acoustic delay” between the microphones which allows it to identify the location of the sound’s source vector.
location is sent to a 180 degree servo
Acoustic Impulse Marker
http://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/f2013/agw39_mag338/agw39_mag338/agw39_mag338/agw39_mag338.html
ur system has a full 360 degree range, and is extremely effective at marking the source of sharp sounds to within 5 degrees of accuracy. We were able to accomplish this using a 3-microphone array and an ATmega1284p microcontroller which detects the acoustic delays between the microphones and calculates the sound’s source vector.
Tomi Engdahl says:
Home Automation with a Custom Wireless Sensor Network
http://hackaday.com/2014/10/11/home-automation-with-a-custom-wireless-sensor-network/
[Paul] designed a custom home automation system with four teammates for an undergraduate thesis project.
The system is broken into two main components; the server and the peripherals. The team designed their peripherals from early prototypes of an upcoming ArduIMU v4 measurement unit.