Internet of Laundry — Let the ESP8266 Watch Your Dirty Drawers Get Clean
When you think of world-changing devices, you usually don’t think of the washing machine. However,Read More
We’re all just sitting at the altar of Elon Musk’s crazy genius – CNET
The billionaire entrepreneur’s LA Loop spectacle left me dazzled and confused. …read more Source:: CNet
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When you think of world-changing devices, you usually don’t think of the washing machine. However, making laundry manageable changed not only how we dress but how much time people spent getting their clothes clean. So complaining about how laborious our laundry is today would make someone from the 1800s laugh. Still, we all hate the laundry and [Andrew Dupont], in particular, hates having to check on the machine to see if it is done. So he made Laundry Spy.
How do you sense when the machine — either a washer or a dryer — is done? [Andrew] thought about sensing current but didn’t want to mess with house current. His machines don’t have LED indicators, so using a light sensor wasn’t going to work either. However, an accelerometer can detect vibrations in the machine and most washers and dryers vibrate plenty while they are running.
The four-part build log shows how he took an ESP8266 and made it sense when the washer and dryer were done so it could text his cell phone. He’d already done a similar project with an Adafruit HUZZAH. But he wanted to build in some new ideas and currently likes working with NodeMCU. While he was at it he upgraded the motion sensor to an LIS3DH which was cheaper than the original sensor.
[Andrew] already runs Node – RED on a Raspberry Pi, so incorporating this project with his system was a snap. Of course, you could adapt the approach to lots of other things, as well. The device produces MQTT messages and Node – RED subscribes to them. The Pushover handles the text messaging. Node – RED has a graphical workflow that makes integrating all the pieces very intuitive. Here’s the high-level workflow:
You might wonder why he didn’t just have the ESP8266 talk directly to Pushover. That is possible, of course, but in part 2, [Andrew] enumerates some good reasons for his design. He wants to decouple components in the system for easier future upgrades. And MQTT is simple to publish on the sensor side of things compared to API calls which are handled by the Raspberry Pi for now.
Long-time Slashdot reader Zorro quotes Nextgov:
The Defense Department is funding a project that officials say could revolutionize the way companies, federal agencies and the military itself verify that people are who they say they are and it could be available in most commercial smartphones within two years. The technology, which will be embedded in smartphones’ hardware, will analyze a variety of identifiers that are unique to an individual, such as the hand pressure and wrist tension when the person holds a smartphone and the person’s peculiar gait while walking, said Steve Wallace, technical director at the Defense Information Systems Agency.
Organizations that use the tool can combine those identifiers to give the phone holder a “risk score,” Wallace said. If the risk score is low enough, the organization can presume the person is who she says she is and grant her access to sensitive files on the phone or on a connected computer or grant her access to a secure facility. If the score’s too high, she’ll be locked out… Another identifier that will likely be built into the chips is a GPS tracker that will store encrypted information about a person’s movements, Wallace said. The verification tool would analyze historical information about a person’s locations and major, recent anomalies would raise the person’s risk score.
A technical director at the agency “declined to say which smartphone and chipmakers planned to participate in the project, but said the capability will be available ‘in the vast majority of mobile devices.'”
of this story at Slashdot.
Everyone recognizes Tetris, even when it’s tiny Tetris played sideways on a business card. [Michael Teeuw] designed these PCBs and they sport small OLED screens to display contact info. The Tetris game is actually a hidden easter egg; a long press on one of the buttons starts it up.
It turns out that getting a playable Tetris onto the ATtiny85 microcontroller was a challenge. Drawing lines and shapes is easy with resources like TinyOLED or Adafruit’s SSD1306 library, but to draw those realtime graphics onto the 128×32 OLED using that method requires a buffer size that wouldn’t fit the ATtiny85’s available RAM.
To solve this problem, [Michael] avoids the need for a screen buffer by calculating the data to be written to the OLED on the fly. In addition, the fact that the smallest possible element is a 4×4 pixel square reduces the overall memory needed to track the screen contents. As a result, the usual required chunk of memory to use as a screen buffer is avoided. [Michael] also detailed the PCB design and board assembly phases for those of you interested in the process of putting together the cards using a combination of hot air reflow and hand soldering.
PCB business cards showcase all kinds of cleverness. The Magic 8-Ball Business Card is refreshingly concise, and the project that became the Arduboy had milled cutouts to better fit components, keeping everything super slim.
This week, Arduino announced a lot of new hardware including an exceptionally interesting FPGA development board aimed at anyone wanting to dip their toes into the seas of VHDL and developing with programmable logic. We think it’s the most interesting bit of hardware Arduino has released since their original dev board, and everyone is wondering what the hardware actually is, and what it can do.
This weekend at Maker Faire Bay Area, Arduino was out giving demos for all their wares, and yes, the Arduino MKR Vidor 4000 was on hand, being shown off in a working demo. We have a release date and a price. It’ll be out next month (June 2018) for about $60 USD.
But what about the hardware, and what can it do? From the original press releases, we couldn’t even tell how many LUTs this FPGA had. There were a lot of questions about the Mini PCIe connectors, and we didn’t know how this FPGA would be useful for high-performance computation like decoding video streams. Now we have the answers.
The FPGA on board the Arduino Vidor is an Altera Cyclone 10CL016. This chip has 16k logic elements, and 504 kB memory block. This is on the low end of Altera’s FPGA lineup, but it’s still no slouch. In the demo video below, it’s shown decoding video and identifying QR codes in real time. That’s pretty good for what is effectively a My First FPGA board.
Also on board the Vidor is a SAMD21 Cortex-M0+ microcontroller and a uBlox module housing an ESP-32 WiFi and Bluetooth module. This is a really great set of chips, and if you’re looking to get into FPGA development, this might just be the board for you. We haven’t yet seen the graphic editor that will be used to work with IP for the FPGA (for those who don’t care to write their own VHDL or Verilog), but we’re looking forward to the unveiling of that new software.
The CBC reports:
When the siren-like sounds from an Amber Alert rang out on cellular phones across Ontario on Monday, it sparked a bit of a backlash against Canada’s new mobile emergency alert system. The Ontario Provincial Police had issued the alert for a missing eight-year-old boy in the Thunder Bay region. (The boy has since been found safe)… On social media, people startled by the alerts complained about the number of alerts they received and that they had received separate alerts in English and French… Meanwhile, others who were located far from the incident felt that receiving the alert was pointless. “I’ve received two Amber Alerts today for Thunder Bay, which is 15 hours away from Toronto by car,” tweeted Molly Sauter. “Congrats, you have trained me to ignore Emergency Alerts….”
The CRTC ordered wireless providers to implement the system to distribute warnings of imminent safety threats such as tornadoes, floods, Amber Alerts or terrorist threats. Telecom companies had favoured an opt-out option or the ability to disable the alarm for some types of alerts. But this was rejected by the broadcasting and telecommunications regulator. Individuals concerned about receiving these alerts are left with a couple of options: they can turn off their phone — it will not be forced on by the alert — or mute their phone so they won’t hear it.
Long-time Slashdot reader knorthern knight complains that the first two alerts– one in English, followed by one in French — were then followed by a third (bi-lingual) alert advising recipients to ignore the previous two alerts, since the missing child had been found.
of this story at Slashdot.
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