Posts with «adafruit» label

You can make your own rotary cellphone

As convenient as modern cellphones are, there's a certain charm to spinning an old-fashioned rotary dial to make a call -- and now, there's a cellphone that caters to that nostalgia. Brookhaven National Lab engineer Justine Haupt has developed a rotary cellphone that's not only functional, but available to make with the help of a $240 do-it-yourself kit. It's effectively a throwback to the days when phones were for calling and nothing else, plus a few present-day creature comforts.

Source: Justine Haupt, Sky's Edge

You can make your own rotary cellphone

As convenient as modern cellphones are, there's a certain charm to spinning an old-fashioned rotary dial to make a call -- and now, there's a cellphone that caters to that nostalgia. Brookhaven National Lab engineer Justine Haupt has developed a rotary cellphone that's not only functional, but available to make with the help of a $240 do-it-yourself kit. It's effectively a throwback to the days when phones were for calling and nothing else, plus a few present-day creature comforts.

Drag And Drop Files On Select Arduino Boards

Historically, getting files on to a microcontroller device was a fraught process. You might have found yourself placing image data manually into arrays in code, or perhaps repeatedly swapping SD cards in and out. For select Arduino boards, that’s no longer a problem – thanks to the new TinyUSB library from Adafruit (Youtube link, embedded below).

The library is available on Github, and is compatible with SAMD21 and SAMD51 boards, as well as Nordic’s NRF52840. It allows the Arduino board to appear as a USB drive, and files can simply be dragged and dropped into place. The library can set up to use SPI flash, SD cards, or even internal chip memory as the storage medium.

Potential applications include images, audio files, fonts, or even configuration files. Future plans include porting the TinyUSB library to the ESP32-S2 as well. Being able to drag a settings file straight on to a board could make getting WiFi boards online much less of a hassle.

We’ve seen other nifty USB libraries before, VUSB is a great option if you need USB on your AVR microcontroller. Video after the break.

Hack a Day 30 May 03:00

Telephone Plays The Songs Of Its People

Music, food, and coding style have one thing in common: we all have our own preferences. On the other hand, there are arguably more people on this planet than there are varieties in any one of those categories, so we rarely fail to find like-minded folks sharing at least some of our taste. Well, in case your idea of a good time is calling a service hotline for some exquisite tunes, [Fuzzy Wobble] and his hold music jukebox, appropriately built into a telephone, is just your guy.

Built around an Arduino with an Adafruit Music Maker shield, [Fuzzy Wobble] uses the telephone’s keypad as input for selecting one of the predefined songs to play, and replaced the phone’s bell with a little speaker to turn it into a jukebox. For a more genuine experience, the audio is of course also routed to the handset, although the true hold music connoisseur might feel disappointed about the wide frequency range and lack of distortion the MP3s used in his example provide. Jokes aside, projects like these are a great reminder that often times, the journey really is the reward, and the end result doesn’t necessarily have to make sense for anyone to enjoy what you’re doing.

As these old-fashioned phones gradually disappear from our lives, and even the whole concept of landline telephony is virtually extinct in some parts of the world already, we can expect to see more and more new purposes for them. Case in point, this scavenger hunt puzzle solving device, or the rotary phone turned virtual assistant.

SENSEation Shows The Importance of Good Physical Design

Sensor network projects often focus primarily on electronic design elements, such as architecture and wireless transmission methods for sensors and gateways. Equally important, however, are physical and practical design elements such as installation, usability, and maintainability. The SENSEation project by [Mario Frei] is a sensor network intended for use indoors in a variety of buildings, and it showcases the deep importance of physical design elements in order to create hardware that is easy to install, easy to maintain, and effective. The project logs have an excellent overview of past versions and an analysis of what worked well, and where they fell short.

One example is the power supply for the sensor nodes. Past designs used wall adapters to provide constant and reliable power, but there are practical considerations around doing so. Not only do power adapters mean each sensor requires some amount of cable management, but one never really knows what one will find when installing a node somewhere in a building; a power outlet may not be nearby, or it may not have any unoccupied sockets. [Mario] found that installations could take up to 45 minutes per node as a result of these issues. The solution was to move to battery power for the sensor nodes. With careful power management, a node can operate for almost a year before needing a recharge, and removing any cable management or power adapter meant that installation time dropped to an average of only seven minutes.

That’s just one example of the practical issues discovered in the deployment of a sensor network in a real-world situation, and the positive impact of some thoughtful design changes in response. The GitHub repository for SENSEation has all the details needed to reproduce the modular design, so check it out.

CircuitPython Snakes its Way onto Adafruit Hardware

We sit down to talk with Scott Shawcroft, an engineer at Adafruit, to discuss their hardware transition to CircuitPython.

Read more on MAKE

The post CircuitPython Snakes its Way onto Adafruit Hardware appeared first on Make: DIY Projects and Ideas for Makers.

CircuitPython Snakes its Way onto Adafruit Hardware

We sit down to talk with Scott Shawcroft, an engineer at Adafruit, to discuss their hardware transition to CircuitPython.

Read more on MAKE

The post CircuitPython Snakes its Way onto Adafruit Hardware appeared first on Make: DIY Projects and Ideas for Makers.

Arduino-Neopixel Traffic Map

This project displays live traffic conditions between two locations on a physical map, using an Adafruit Feather Huzzah that gathers data from the Google Maps API and then sets the color of a string of NeoPixels

Read more on MAKE

The post Arduino-Neopixel Traffic Map appeared first on Make: DIY Projects and Ideas for Makers.

Arduino-Neopixel Traffic Map

This project displays live traffic conditions between two locations on a physical map, using an Adafruit Feather Huzzah that gathers data from the Google Maps API and then sets the color of a string of NeoPixels

Read more on MAKE

The post Arduino-Neopixel Traffic Map appeared first on Make: DIY Projects and Ideas for Makers.

From the New Issue of Make: Our 8 Standout Dev Boards

These eight boards stand out for their advanced specs, built-in offerings, and, in some cases, their innovative interface options.

Read more on MAKE

The post From the New Issue of Make: Our 8 Standout Dev Boards appeared first on Make: DIY Projects and Ideas for Makers.