Using an Arduino Nano and two rotary stages, this Maker hacked together a panoramic thermal imaging camera.
After ordering and finally receiving a thermopile (infrared thermometer) in the mail, the author of this project set to work to construct his own scanning thermometer. This type of setup acts like an IR camera, but instead of taking one instantaneous picture, it stores thermal data points that are then resolved into a coherent image.
Though the panoramic results can be fantastic, since the thermometer has to be rotated to each point individually via stepper motors on the rotary stages, a single image capture can take over an hour.
Back in the day, building a DIY radio was fun! We only had to get our hands at a germanium diode, make some coils, and with a resistor and long wire as an antenna maybe we could get some sound out of those old white earplugs. That was back then. Now we have things like the Si4703 FM tuner chip that can tune in FM radio in the 76–108 MHz range, comes with integrated AGC and AFC, controlled by I2C, as well as a bunch of other acronyms which seem to make the whole DIY radio-building process outdated. The challenges of the past resulted in the proven solutions of the present in which we build upon.
This little project by [Patrick Müller] is a modern radio DIY tutorial. With an Arduino Nano as the brains and controller for an Si4703 breakout board, he builds a completely functional and portable FM radio. A small OLED display lets the user see audio volume, frequency, selected station and still has space left to show the current available battery voltage. It has volume control, radio station seek, and four buttons that allows quick access to memorized stations. The source code shows how it is possible to control the Si4703 FM tuner chip to suit your needs.
As for ICs, not everything is new, [Patrick] still used the good old LM386 amp to drive the speaker, which is almost 35 years old by now. As we can listen in the demo video, it can still output some seriously loud music sounds!
Sadly, due to the FM receiver band constraints, you can’t listen to Jupiter on this one.
Electronic interfaces have advanced from plugging things in, to keyboards, touchscreens, VR environments, and perhaps soon temporary tattoos. Led by Martin Weigel, researchers at Saarland University in Saarbrücken, Germany have come up with a way to turn your skin blemishes and wrinkles into touch-sensitive controls for devices like smartphones and computers.
“SkinMarks” can be transferred onto the skin using water and last a couple of days before rubbing off. As seen in the video below, these e-tattoos can take the form of buttons, sliders and visual displays, and even sense when a joint is bent. For example, knuckles on a hand made into a fist could act as buttons and then become a slider when the fingers are straightened.
Another type of SkinMark is electroluminescent, meaning that an image printed on your skin could light up to signal a phone call or other important notifications.
These tattoos are connected to a wrist-mounted Arduino Nano and an Adafruit MPR121 capacitive touch shield via wires and copper tape; though if the system can be shrunk down even further, this could open up many different possibilities!
Modding vehicles to do something different and unique has been a pastime of “motorheads” almost since cars began to replace horses. Many modifications involve speed, but some like these fancy turn signals by Shravan Lal, simply supplement the looks of his ride.
An Arduino Nano was used as the brains of this hack in order to control strips of WS2812B LEDs acting as blinkers (similar to those on the new Audi A6) in the video below. In addition to signaling a right or left turn, Lal’s build also has a neat startup animation, and can act as a set of hazard lights if needed.
As Maker Alex Gyver points out in his video, Chinese bike computers are quite cheap, but “why not?” It’s a great question, and one that motivates many of the hacks seen here, including his mountain bike speedometer.
Although he could have simply used a numerical display to show how fast his bike was going, he instead employed a small servo to point to the speed like an analog gauge. The custom speedometer is based on an Arduino Nano, and wheel revolutions are measured by a magnetic and Hall effect sensor.
Given an input and some sort of indicator, is there any device that can’t be hacked into a timepiece? With the help of an Arduino Nano and an ESP8266 module, Guilio Pons has created a unique clock out of a 1950s-era multimeter.
Pons’ project not only displays time with an indicator originally meant to reveal electrical values, but is also able to output sounds as needed using a speaker recovered from an old toy. He integrated three LEDs as well as a PIR sensor, so the unit can light up at night.
PWM control from the Arduino takes care of moving the gauge, while the ESP8266 allows the time to be synchronized via the Internet and the alarm adjusted over WiFi.
If you need to quickly launch certain apps on your MacBook Pro, Carl Gordon has your solution using an Arduino Nano.
Although the TV ads for your notebook computer would perhaps have you believe that everyone who uses it is a DJ, artist, or rock climber, chances are you just use it for a handful of programs and folders over and over. If this sounds like you, you can at least speed up access to them using Gordon’s “Laptop Control Box.”
As seen below, the box acts as a grid of shortcuts to your favorite applications, with a button to select sets of programs and an embedded RGB LED module to show you which set is active without having to look at the screen. Control on the computer side is accomplished with Processing, and though it might look like its window needs to be active in the video, it can work in the background as well.
This version currently gives me to access 24 different functions which are divided into six categories of four functions for ease of use, these categories include: tools, media, browser, utilities, social and lifestyle. Categories can be navigated through using the small button on the side and each category is visualized with a unique color by an RGB LED within the device, illuminating the plastic buttons from underneath.
Using an Arduino Uno, Nano, and two Bluetooth modules, engineering student “Roboro” can now remotely control his sumo robot.
Like many hackers, Roboro had an old gaming controller that he wasn’t using, in this case an Xbox steering wheel and pedals. Naturally, he converted it into a controller for his sumo robot, which can now be driven manually. This involved wiring the wheel controls into an Uno; the smaller Nano was used onboard the bot.
Rewiring a controller is nothing new, but what is also quite interesting from a hack point of view is that the Arduinos communicate over Bluetooth. When initiated, the controller connects itself to the robot, which can then be driven around (as long as it doesn’t get stuck in the hardwood).
Have you ever wanted to build your own Arduino from scratch? [Pratik Makwana] shares the entire process of designing, building and flashing an Arduino Nano clone. This is not an entry-level project and requires some knowledge of soldering to succeed with such small components, but it is highly rewarding to make. Although it’s a cheap build, it’s probably cheaper to just buy a Nano. That’s not the point.
The goal here and the interesting part of the project is that you can follow the entire process of making the board. You can use the knowledge to design your own board, your own variant or even a completely different project.
[Pratik Makwana] starts by showing how to design the circuit schematic diagram in an EDA tool (Eagle) and the corresponding PCB layout design. He then uses the toner transfer method and a laminator to imprint the circuit into the copper board for later etching and drilling. The challenging soldering process is not detailed, if you need some help soldering SMD sized components we covered some different processes before, from a toaster oven to a drag soldering process with Kapton tape.
Last but not least, the bootloader firmware. This was done using an Arduino UNO working as master and the newly created the Arduino Nano clone as target. After that you’re set to go. To run an actual sketch, just use your standard USB to UART converter to burn it and proceed as usual.
Voilá, from zero to Nano:
If you still want to build an Arduino but the difficulty level is a bit high for you, maybe a good idea is to start with the Shrimp.
Planet Arduino is, or at the moment is wishing to become, an aggregation of public weblogs from around the world written by people who develop, play, think on Arduino platform and his son. The opinions expressed in those weblogs and hence this aggregation are those of the original authors. Entries on this page are owned by their authors. We do not edit, endorse or vouch for the contents of individual posts. For more information about Arduino please visit www.arduino.cc
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