2016-08-04 - Nº 66
Editorial
Esta é a Newsletter Nº 66 que se apresenta com o mesmo formato que as anteriores. Se gostar da Newsletter partilhe-a!
Todas as Newsletters encontram-se indexadas no link.
Esta Newsletter tem os seguintes tópicos:
Esta semana ficamos a saber que a Moon Express foi autorizada a ser a primeira companhia privada a poder passar para lá da órbita terrestre. Na china estão a fazer testes com um autocarro elevado. Trata-se de um veiculo que circula por cima dos restantes veículos permitindo que estes passem por baixo dele.
Na Newsletter desta semana apresentamos diversos projetos de maker. Na rubrica "Documentação" apresentamos quatros livros sobre Design.
João Alves ([email protected])
O conteúdo da Newsletter encontra-se sob a licença 
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Novidades da Semana ^
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"The U.S. Government has made a historic ruling to allow the first private enterprise, Moon Express, Inc. (MoonEx), permission to travel beyond Earth’s orbit and land on the Moon in 2017. This breakthrough U.S. policy decision provides authorization to Moon Express for a maiden flight of its robotic spacecraft onto the Moon’s surface, beginning a new era of ongoing commercial lunar exploration and discovery, unlocking the immense potential of the Moon’s valuable resources."
China's elevated bus: Futuristic 'straddling bus' hits the road
"t may look like something from the future, but China's long-awaited "straddling bus" ran its inaugural test in Hebei province this week. The 2m-high Transit Elevated Bus (TEB) straddles the cars below, allowing them to pass through. Powered by electricity, the bus is able to carry up to 300 passengers in its 72ft (21m) long and 25ft wide body."
Outras notícias
- Towards an exact (quantum) description of chemistry
- What’s wasting power at home? Ask your app!
- IBM Lab-on-a-Chip Breakthrough Aims to Help Physicians Detect Cancer and Diseases at the Nanoscale
- China exclusive: Chinese netizens bid farewell to Yutu, beloved lunar rover
- TDK's subsidiary EPCOS to acquire Tronics to further grow its sensor business
Ciência e Tecnologia ^
Tough gel stretches to 21 times its length, recoils, and heals itself
"A team of experts in mechanics, materials science, and tissue engineering at Harvard have created an extremely stretchy and tough gel that may pave the way to replacing damaged cartilage in human joints. Called a hydrogel, because its main ingredient is water, the new material is a hybrid of two weak gels that combine to create something much stronger. Not only can this new gel stretch to 21 times its original length, but it is also exceptionally tough, self-healing, and biocompatible—a valuable collection of attributes that opens up new opportunities in medicine and tissue engineering. The material, its properties, and a simple method of synthesis are described in the September 6 issue of Nature."
Perspective-aware Manipulation of Portrait Photos
"Synthetic biology allows researchers to program cells to perform novel functions such as fluorescing in response to a particular chemical or producing drugs in response to disease markers. In a step toward devising much more complex cellular circuits, MIT engineers have now programmed cells to remember and respond to a series of events. These cells can remember, in the correct order, up to three different inputs, but this approach should be scalable to incorporate many more stimuli, the researchers say. Using this system, scientists can track cellular events that occur in a particular order, create environmental sensors that store complex histories, or program cellular trajectories."
MECs: "Building Blocks" for Creating Biological and Chemical Instruments
"The development of new biological and chemical instruments for research and diagnostic applications is often slowed by the cost, specialization, and custom nature of these instruments. New instruments are built from components that are drawn from a host of different disciplines and not designed to integrate together, and once built, an instrument typically performs a limited number of tasks and cannot be easily adapted for new applications. Consequently, the process of inventing new instruments is very inefficient, especially for researchers or clinicians in resource-limited settings. To improve this situation, we propose that a family of standardized multidisciplinary components is needed, a set of “building blocks” that perform a wide array of different tasks and are designed to integrate together. Using these components, scientists, engineers, and clinicians would be able to build custom instruments for their own unique needs quickly and easily. In this work we present the foundation of this set of components, a system we call Multifluidic Evolutionary Components (MECs). “Multifluidic” conveys the wide range of fluid volumes MECs operate upon (from nanoliters to milliliters and beyond); “multi” also reflects the multiple disciplines supported by the system (not only fluidics but also electronics, optics, and mechanics). “Evolutionary” refers to the design principles that enable the library of MEC parts to easily grow and adapt to new applications. Each MEC “building block” performs a fundamental function that is commonly found in biological or chemical instruments, functions like valving, pumping, mixing, controlling, and sensing. Each MEC also has a unique symbol linked to a physical definition, which enables instruments to be designed rapidly and efficiently using schematics. As a proof-of-concept, we use MECs to build a variety of instruments, including a fluidic routing and mixing system capable of manipulating fluid volumes over five orders of magnitude, an acid-base titration instrument suitable for use in schools, and a bioreactor suitable for maintaining and analyzing cell cultures in research and diagnostic applications. These are the first of many instruments that can be built by researchers, clinicians, and students using the MEC system."
Documentação ^
A documentação é parte essencial do processo de aprendizagem e a Internet além de artigos interessantes de explorar também tem alguma documentação em formato PDF interessante de ler. Todos os links aqui apresentados são para conteúdo disponibilizado livremente pelo editor do livro.
Livros
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"The Shape of Design is an odd little design book. Instead of talking about typography, grids, or logos, it focuses on storytelling, co-dependency, and craft. It tries to supplement the abundance of technical talk and how-to elsewhere by elevating why great work is done. Shape is a book about objectives, and it zooms out to answer a couple big questions: How does it feel to make things for other people? And how can we do so in a meaningful, engaged way?"
EVERYTHING THERE IS TO KNOW ABOUT LOGO DESIGN
"Learn the basics of what a logo is, the rules of creating a logo and other things to consider like color and typography. Find out what type of things you should try and avoid and take a look and some awesomely bad design. A great logo is the first step to a great brand so don't ignore it!"
Pixel Perfect Precision (PPP) Handbook
"The Pixel Perfect Precision (PPP) Handbook from leading digital design agency ustwo has come a long way since it was first released four years ago. What started as 108-page simple guide to best practise with pixels and Photoshop, has grown into PPP3 - a whopping 214-page designer bible."
Graphic Design For Non-Profit Organizations
"The document presented here is focused on structural design and general best practices as it applies to Non-Profit Organizations. However, the scope of the teachings here apply to good design across any industry or platform."
Modelos 3D ^
Com a disponibilidade de ferramentas que permitem dar azo a nossa imaginação na criação de peças 3D e espaços como o thingiverse para as publicar, esta rubrica apresenta alguns modelos selecionados que poderão ser úteis.
Customizable Hammond Style Box
These enclosures have the same inner and outer dimensions as their Hammond counter parts. The holes in the lid are not going through the whole lid, instead only 3mm into it.
This boxes are intended to be used with magnets as closing mechanics instead of the screws. The Body part takes four 3mm Diameter and 10mm height screws. The top takes four 4mm Diameter 3mm height magnets.
Those same magnets may be used with the original Hammond boxes since they fit the holes, but they need to be glued into place. With the 3D printed part they should simply press fit. With the original boxes you should also consider a 6mm Diameter 1mm height magnet to cover the magnet in the lid
Testing sizes: First print test.stl and make sure the wall sizes and holes for the magnet fit your printer settings. If they do, good you can use all the available boxes.
Each box has the following stls:
Both: Body and lid Body: only the body Lid: only the lid If they do not, open the customizer and adjust the values as needed. The offsets are offsets from the original size.
The attached stl's are rendered from the customizers default settings.
Available Boxes: 1550:
1550A 1550B 1550P 1550Q 1590:
1590A 1590B 1590G
Simple spice/salt/tea/powder scoop
Got a couple pounds of smoked sea salt and wanted to divvy it up among friends. Had some small ziplock bags that I wanted to fill and needed a scoop. So I modeled and printed my own. Fits the 50mm (2")-wide bags I had.
scoop_w_grip has gripper ridges for your thumb (silver scoop).
Polyhedron CC~ish Subdivision Demo OPENSCAD
This is a remix of the hex bit holder by TBRIshtar : http://www.thingiverse.com/thing:241501 - thanks TBRIshtar!
This remix mimics the original as close as possible but has the following features:
Almost fully parametric Any number of rows and columns, still keeping the edge rows open on the sides. This is nice if the hex shank has the bit size stamped on it. Footer height can be adjusted Wall height can be adjusted Allows easy scaling in the X and Y directions if your printer causes the hex holes to be too tight, like mine does. I use the OpenSCAD fillets lib https://github.com/jfhbrook/openscad-fillets by jhfbrook for filleting the edges - Thanks jhfbrook!
The Holder() module takes all dimensional parameters as arguments, so can easily be used from other SCAD files.
The original size of the holder by TBRIshtar are the defaults, but simply override any dimensions you want in subsequent variables of the same name, or change the originals.
Another quick way to generate STLs for any size is from the command line:
$ openscad -o output.stl -Dcolumns=7 -Dfoot=3 -D scl=1 bitHolder.scad Note when using the command line you must supply the scl variable if you do not want any scaling. This is because the file overrides the default scale from 1.0 to a scaling I use on my printer. The same goes for height and foot.
On Github: https://github.com/fitzterra/3DP/tree/master/Things/Tools/Hex_Shank_Drill_Bit_Holder
Clockwerk - A 3D Printed, Three-Axis Tourbillon
'Clockwerk' is a wall hanging kinetic sculpture of a 3-axis tourbillon escapement, and is the world's first 3D printed multiaxis tourbillon. The mechanism is heavily inspired by Vianney Halter's wonderful "Deep Space Tourbillon" watch, but adapted for the scale and materials of 3D printing. See the final mechanism in action here.
3-axis tourbillons are beautiful to see in motion, but are some of the most expensive and rare watch components in the world. Watches containing them command prices in the hundreds of thousands USD, and have production volumes in the single digits. What better way to bring this mechanism to the masses than 3D printing?
Now you can have watchmaking's rarest escapement hanging on your wall!
Clockwerk is made of 99 parts: 34 printed parts, 8 ball bearings, 3 metal shafts, 2 barbell plates, 1 meter of fishing line, and 51 screws.
The model shown here is printed such that each axis is an alternating color for ease of understanding the axis of rotation. The central blue part rotates within the white cage, which rotates within the blue U which rotates within the white bowl.
Note that this is a bit tough to print and assemble, and is not a beginner project.
1.1 Revision Notes:
Updated Part Orientations Added Bowl-Top_2 component. I incorrectly thought it was identical to the previous "Bowl" component, but it's actually slightly different. If you previously printed 2X of the bowl, you'll need to replace one of those with one of these (sorry).
Projetos Maker ^
Diversos Projetos interessantes.
DIY Smart House 1 - Personal Voice Assistant
"Our last few projects posted on instructables have been viewed over 100K times and been liked by thousands of people. You can find them at ReRouter - Make an Extensible IoT Router and Smart router with WiFi Connection Visualization. In fact, they are all about smart controls. The popularity of these kind of projects has inspired us to move forward and contribute more on it. We decided to make a serial of smart IoT devices that can be used to build a smart house for ANYONE. Now we are starting from this one - the DIY Personal Voice Assistant based on Raspberry Pi."
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"Mumai is an open-source muscle-machine interface that connects your body to any kind of electronic or mechanic device through the myoelectric (EMG) signals generated by your muscles. The uses of this interface are limited only by your imagination. It can be used to control assistive robotic devices such as prostheses or exoskeletons. Alongside some of the freely available machine learning libraries (Scikit-learn, TensorFlow, Dlib...) it can be used to implement a gesture recognition controller to interact with electronic devices such as computers or smartphones. In the sports field, it can be used to optimize the level of exercising. At a university level, it can be used in biosignal processing courses, working as a biomedical instrumentation device. How this device will be used depends on you."
Simple and Fun Proximity Alarm
"An ultrasonic rangefinder and Arduino microcontroller will check for nearby objects and if need be, alert you with a piezo-buzzer and RGB LED. Learn about these components using electronics lab simulations and eventually design, code, simulate, and build the proximity alarm itself! This is great if you are looking for a quick project to learn about digital electronics."
DIY | Adjustable Timer using 555 & potentiometer
"DIY | Adjustable Timer using 555 & potentiometer"
RPM Measurement Using Hall Sensor and Arduino
"In continuation with my previous instructable, RC Car that you can find on this link RC Car using infrared. I've decided to upgrade the car with RPM measurement using Hall sensor and a neodymium magnet. In the following steps I'll describe the parts needed for the setup and will provide the code. I did not encounter a good Instructable about RPM measurement with Hall sensor on this site so I hope it will provide valuable information for the potential readers."
How to build a ESP8266 Web Server
"This tutorial is going to teach you some basics on using ESP8266 to build a simple server which can control the LED and display the sensor data when detect the flame occurs."
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"This project started out as a way to waste a Saturday afternoon. I had a Raspberry Pi and an extra monitor and had just taken down an analog clock from my livingroom wall. I was contemplating getting a radio sync'ed analog clock to replace it, so I didn't have to worry about it being accurate."
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"A 3-D printable open source platform for fluorescence microscopy, optogenetics and accurate temperature control. Designed for flexibiliy and low-cost, the FlyPi is an optical microscope designed for behavioural work with fruit flies, zebrafish or C. elegans. The system is based on a Raspberry Pi with camera, an Arduino microcontroller and a range of off-the-shelf electronic parts. A modular design provides for flexible control of a range of peripherals including options for optogenetic and thermogenetic stimulation and fluorescence microscopy. All mechanical parts are 3-D printed which includes a range of manual or motorised micropositioning options."
An open source 3D Scanner made with Raspberry Pi
"By making use Raspberry Pi, we created an easy to build 3D scanner to be used for the acquisition of three-dimensional models via a video camera and a laser. 3D printing keeps on establishing itself, mostly thanks to the availability of more user-friendly 3D printers and price drops. Those who use a 3D printer do it both for printing a original models of their work (such as for example, the scale model of a building or the replica of mechanic particulars), and to print items modelled from others for which STL files are often available. In order to reproduce an item if the STL is not available you will have to create it, and there are two ways to do it: either using a 3D modelling tool or by acquiring a 3D drawing for the item, by means of a specific three-dimensional scanner. 3D Scanners are used in various fields, going from industry (for the copy of an object, starting from a model, a mould or an item to be replicated) to medicine (it is used, for example, by dental technicians so to scan the mouths cast and pilot CNC machines or 3D printers with which to build dental crowns and tooth caps, but also for the modelling of orthopedic implants). The scanner is also needed to acquire an objects model and to remotely send it, where a 3D printer may replicate it; this is needed, for example, if it is necessary to send a sample from the other side of the world, but you cannot wait for the times needed by the couriers."
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"Technically speaking Plan-B (named so because it wasn't plan-A) is my fourth self balancing wonder bike project, It is however the 3rd unicycle to be completed (The lepton is still in the construction phase). Plan-B is designed to be a commuter Unicycle, weight has been saved by making the unicycle smaller, the lead acid batteries have been replaced by a LifePo4 battery which at 1/4 the weight of the old cells makes a huge difference in terms of portability. Most importantly the new design unfolds, a carrying handle has been added to the rear of the unicycle making it easy to take onto a train, or just put into the boot of the car."
Word Clock Using Arduino and RTC
"I decided to make a special gift for my girlfriend for her birthday. As we're both into electronics, it was quite a good idea to make something "electronicsy". Besides, we both have gifted each other this kind of self made gifts before, and it just feels awesome. So, I was just surfing YouTube and I came across a video. After watching that, I was pretty sure that I am going to make this. That's how it all started."
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"Building your own mobile robot is becoming easier and easier, thanks to excellent ready-to-use robotic platforms. A good example of such platform is the Adafruit Mini Robot Chassis kit, which comes with a nice robot chassis, two servo motors with wheels and a support-wheel. This makes it the perfect base for all your mobile robot projects. On the other hand, you now can buy powerful & cheap microcontrollers like the ESP8266 WiFi chip, which is not only easy to use but also comes with onboard WiFi connectivity. This is just the perfect chip to control robots remotely from your computer or mobile device."
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"This is an android dimmer which also works by hand, The power is only there when it's android operated with a HC-05. it works with an Pro mini atmega168 or 328 The program drives a servo which drives 3Dprinted gears on a simple triac dimmer, so you can control any lightbulp by hand or phone or tablet."
Arduino Motorcar Control Using 6-Axis Sensor
"MPU6050 is a 6-Axis (Gyro + Accelerometer) motion tracking device. This motion tracking device is designed for low power, low cost applications. For precision tracking of both fast and slow motions, the parts feature a user-programmable gyro full-scale range of 250, 500, 1000, and 2000 /sec (dps ), and a user-programmable accelerometer full-scale range of 2g, 4g, 8g, and 16g. In this project, we are going to use an Ameba Arduino baord connected with this motion tracking device to control a motorcar which is also under controlled by another Ameba Arduino board."
How to build a Raspberry Pi Robot (part 1)
"Last year, I built a robot based on Raspberry Pi and gave a demo on the Pi Day in Computer History Museum. I thought that it might be helpful to someone if I share how I built it."
RFID Based Attendance System Using Raspberry Pi
"On this RFID based Attendance device undertaking, i can explain you ways are we able to count number of attendance routinely by way of the usage of RFID playing cards. RFID devices (Radio Frequency identification and Detection) are normally utilized in schools, workplace, offices and stations for various functions to automatically count or detection of authorized people. Here we will remember the attendance of an authorized character with the aid of using RFID. This project is divided into distinct sections: reader section, manage section, driver section and display section."
Arduino weather box: The best Arduino weather station tutorial
"How cool would it be if you had your own Arduino weather station right in your backyard? Sounds fun? Geeky? Having your own weather station means that you dont need any more of that inaccurate results from the weather channel anymore. You could even log the data and play around with it. Set mood lighting according to the weather? Why not? This tutorial will get you kick-started with your own DIY Weather Box to chart out local weather. What are you waiting for? Lets get started!"
Java ME 8 + Raspberry Pi + Accelerometer + PWM + Motor Driver = JBalancePI Robot (Part 1)
"Learn how to build a two-wheel self-balancing Java robot using Raspberry Pi. In my last four-part series of articles, I explained how to connect electronic sensors or devices to the Raspberry Pi 2 Model B using various interfaces: Part 1 showed how to use general-purpose input/output (GPIO) interfaces, Part 2 used inter-integrated circuit bus (I2C) interfaces, Part 3 used universal asynchronous receiver transmitter circuit (UART) interfaces, and Part 4 used serial peripheral interface (SPI) interfaces."
Arduino home automation, Automatic door opene
"I had an idea to make a simple, and easy to use door opener with a geared motor a couple of years ago. At that time I did not have the knowledge to make a door opener. This winter break I felt optimistic and, gave it a shot. I am making this instructable, as simple ways to make this online, and all I found were complicated attempts at chicken coop openers. Since this is my first instructable, I might miss out some information, so you can leave your questions in the comments, and I will respond as promptly as I can. The point of this instructable is mainly to inspire you to do something similar, or to help you build yours."
How to Add an IR Remote to a Speaker System
"In this project I will show you how I created an additional circuit for my speaker system in order to control it wirelessly with a homemade IR remote. Let's get started!"
Opto-Isolated Laser Controller Build
"My goal was to utilize a free hardware output line to signal to a device that I build to modulate the laser in a special way. This way there would be no modification to any existing equipment, and no software to install. Further, since this hardware isnt mine, I dont like the idea of permanently modifying it (or even risking breaking it by designing something which could damage it by connecting to it). The specific goal is to allow the existing software to cause the laser to fire 20 ms pulses at 15 Hz for a few dozen cycles of 5s on, 5s off. Its also important to have some flexibility to reprogram this firing protocol in the future if a change is desired."
ZIF Jig for AVR ATtiny chip programming
"I bought a couple of AVR programmers from e-bay, knowing that I would need to build a jig to connect my ATtiny85 or ATtiny13A. I wanted the jig to use a ZIF (Zero Insertion Force Socket) for my chip, and connect to programmers that use either a 6 pin or a 10 pin cable. The key to assembly is a Schmart Board. It holds the ZIF socket, header pins for either format cable, a reset button, and two LEDs. Schmartboards are actually quite easy to solder."
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"This is a tiny Arduino rover that would make a great first project for beginners. It's super simple and very versatile, making it easy for people that are just starting out to program on their own. I was able to build this thing and program it in under an hour and a half, and I'm sure some of you will be able to build it faster than that. The idea is to build a simple rover based on what you have lying around, instead of having to buy materials online."
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"First off a big thanks to Miria Grunick who originally developed this and Simon Law who modified the code to work on the arduino rather than a teensy. Miria's site is at http://blog.grunick.com/blinky-box/ Simon's site is at http://www.simonlaw.com.au/electronics/blinky-box/ Two of my boys are twins who are now just over one year old and getting into the age of exploring everything and loving lights which go on and off, my lamps can attest to that. After i saw Miria's project i searched for an Ardunio version and stumbled on Simon's version which has been modified for the Arduino. I set about acquiring the parts and planning how i would build my own version. The arduino code can be downloaded at code. I take no credit for the code as it's all Miria's and Simon's work. I'd love a laser cutter and think it would give my projects that professional edge and polished look. I'm starting to make more electronic toys for my little boys so a laser cutter would allow me to make even more creative designs."
Star Track - Arduino Powered Star Pointer and Tracker
"Star track is an Arduino based, GoTo-mount inspired star tracking system. It can point and track any object in the sky(Celestial coordinates of the object as input) with 2 Arduinos, a gyro,RTC module,two low-cost stepper motors and a 3D printed structure. I'm not just going to give you the instructions to build this project. In the first step, I'm going to introduce you to the basics of Positional Astronomy. Next, I'll explain the idea behind this project. I'll give you the Tinkercad links for the 3d printed parts. So you can edit them to your preferences. Also, I'll include a troubleshooting guide based on the problems I encountered during this build. This way you don't have to follow the instructions and build the same thing. Maybe you can find a better algorithm to track the stars. Or you can develop the structure and use bigger motors to drive a telescope? Your imagination (and resources of course :')) is the limit. Let me know about your build!"
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"Have you wanted lately to make an intruder alarm or other things that require a remote measuring system? In this Instructable I will show you how to make an easily customizable Ultrasonic Measuring Device, using the HC-Sr04 and Arduino. Once completed, you will be able to get accurate distances of objects, which can be used for a range of different projects, including a few listed at the end of this Instructable. So let's get started!"
Recycled Coke Can Popcorn Maker
"Sometimes you're stuck in the middle of the deep forest during your camping, with some unpopped corn kernels, and nothing to pop them with. Luckily, with a coke can and a multi functional Army knife, you can be on your way to Popcorn Town.Popcorn is a favourite snack food for all during the camping. In this Instructable, I will shows how you can turn a coke can into a popcorn maker.I am trying to make the Popcorn maker by using only a multi functional Army knife.Because in most of the camping you may not find any other tools on your hand. I am using a Leatherman that I was won in an earlier Instructables Contest."
Raspberry Pi3 + XBee + XBMQ + MQTT + Node-Red IoT
"This instructable is comprised with the notes I took during the implementation of the project. What I have working at home now is a system managed by a Raspberry Pi that is controlling the well Water Pump and receives the signal from a cheap Water Level Sensor on the Water deposit. Just so you know, the Water Deposit and the Water Pump are quite far away from each other, I could not use cheap wi-fi receivers as the signal is lost. So, my old XBee's that were gathering dust came in very handy for the project. Also, the Water Pump takes a long, long time to fill the deposit, so we had some incidents where people activated the pump and forgetting about it."
Controlling an Arduino Turret With IR Remote
"In a previous instructable, we covered making an Auto-Turret with a Pixy. That was great for tracking objects of a certain color and firing on them. What if you want to control it manually? There are several options, such as directly controlling it using a Joystick, or using the motion controls in a Wii Nunchuk, but what if you want to control it from across the room? Using a TV Remote and an IR Receiver, we can remotely operate a turret! Let's get started!"
WiFi BrewPi Fermentation Temperature Controller With ESP8266
"As I started to get further into brewing I realized I needed a way to better control fermentation temperatures and quickly stumbled across the BrewPi project. It's a fairly ingenious combination of a Raspberry Pi and a microcontroller which allows for very precise control of fermentation temperatures - and web-based logging to boot. Unfortunately for me, my fermentation chamber is across the room from where I have my Raspberry Pi, so I needed a way to control things wirelessly. The most common solution was to use an ESP8266-based board as a wireless "bridge" between an Arduino and the Raspberry Pi, but as I started thinking - the ESP8266 is actually the more capable microcontroller in that setup. Why not eliminate the Arduino in favor of the ESP8266 entirely?"
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"Digital Logic circuits with PSOC are very powerful tool. Hardware logic runs in parallel to the processor they work grreat for fast response"
2 Digit Digital Up Counter Using PIC16F1825
"The Two Digit UP Counter project built using PIC16F1825 Microcontroller from Microchip, CAT4016 serial to display driver IC from ON-Semiconductor and two 7 Segment common anode 0.5 Inch display. Project works using two switches S3 and S2, third switch has no use. When switch S3 is pressed it increments the count on display by one and S2 provides the reset function, This little handy project consumes low current and can be work with 4.5 V battery, intensity of the display can be change by replacing value of R1, read Cat4016 data sheet for more information about current setting. Display range 00 to 99. This project can be used in various applications like product counter, score board, object counter, vehicle counter."
High Precision Cardboard CNC Drawing Machine
"After achieving decent accuracy with the 2-Axis Cardboard CNC machine, it gave me the confidence to make the 3-Axis CNC machine with the cardboard. Here are some of my design considerations when designing this machine."
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"I say that this article is now NOT ONLY about an I2c LCD display facility just added to the ESP8266 boards but theres a PARALLEL version as well, making use of GPIO 4,5,12,13,15 and 16. Comments below about format apply equally to the I2c and parallel versions for the latter, simply use device 255. Note when you do that you lose GPIO13 as an indicator automatically until next power-up. Success with I2c once I realised there was something up at the Arduino end which I could work around, my ESP8266 I2c endeavours have been coming on in leaps and bounds!"
Arduino Timer With On/Off Set Point
"Hi, with this project you will be able to control the on and off of your devices between the time you want. They may be the lights at the night, water the garden, turn on a machine, etc. We will use the arduino, the LCD and the RTC 1307 to show and control the time. You can set the "ON" hour and the "OFF" hour, by 4 push buttons that let you increase or decrease the "SET POINT". Also, you will learn to make a clock with the arduino. I included fritzing schematics and a video, so you can make this project."
Fitting Electronics Into Altoids
"A lot of effort on this site seems to go towards fitting stuff into Altoids tins, so I thought I'd give it a try."
Garduino: Geek Gardening with Arduino
"I wanted to start gardening, but I knew I wouldnt keep up the regular schedule of watering the plants and making sure they got enough light. So I recruited a microprocessor and a suite of sensors to help with these tasks. An Arduino microcontroller runs my indoor garden, watering the plants only when theyre thirsty, turning on supplemental lights based on how much natural sunlight is received, and alerting me if the temperature drops below a plant-healthy level. For sensors, the Garduino uses an inexpensive photocell (light), thermistor (temperature), and a pair of galvanized nails (moisture)."
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"Ardio is a MIDI synthesizer. It listens on all MIDI channels for regular MIDI data. It is a 16 channel Arduino based audio device. Software and schematics are designed by [email protected]. The PCB design is by Sebastius. One arduino takes care of the MIDI processing, the other two get commands ("play a note on pin x, this frequency") via i2c."
DIY Pan and Tilt Network Security Cam with Raspberry Pi
"Learn how to make a remotely viewable pan and tilt security camera with a Raspberry Pi. This project can be completed in a morning with only the simplest of parts. Heres the end result:"
Decode 433 MHz signals w/ Raspberry Pi & 433 MHz Receiver
"This post will show you how to read 433 MHz codes using a Raspberry Pi. This tutorial was made to complement the Voice Controlling project which needed 433 MHz Unit Code Values to control the wireless switches. If you want to know how to read 433 MHz codes using an Arduino, go to this post! I learned how to do this by reading this post. So credit goes to Paul Pinault for making this project a reality."
Program an Arduino Wireless over Bluetooth
"An Arduino Uno is a really cool piece of hardware to get started with electronics, but one downside to the Arduino is it needs to be plugged into computer using a serial to USB cable each time you want to upload the code. In some projects it would be really handy to program the Arduino wireless, so in this instructable I'm going to show you how to program an Arudino wireless over Bluetooth, so you don't have to carry an extra USB cable again or unplug the Arduino from the project just to upload the new code. You can also view the video below on how to build this project."
That's all Folks!