OpenFixture Takes the Pain Out of Pogo Pins

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Hackaday reports:

OpenFixture Takes the Pain Out of Pogo Pins

[Elliot] wrote in with his OpenFixture model for OpenSCAD. It’s awesome because it takes a small problem, that nonetheless could consume an entire day, and solves it neatly. And that problem is making jigs to test assembled electrical products: a PCB test fixture.

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In the PCB design software, you simply note down the locations of the test points and feed these into the OpenSCAD model.  [Elliot] shows you exactly how to do it using KiCAD. There are a few more parameters of the model that you can tweak to match your particulars, but you should have a DXF outline for a test jig in short order. Cut that out, assemble, and test.

 

OpenFixture Takes the Pain Out of Pogo Pins

OnChip Open Source RISC-V microcontroller at ORCONF 2016

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ORCONF 2016 was held earlier this month in Bologna, Italy:

ORCONF is an open source digital design and embedded systems conference, covering areas of electronics from the transistor level up to Linux user space and beyond. Expect presentations and discussion on free and open source IP projects, implementations on FPGA and in silicon, verification, EDA tools, licensing and embedded software, to name a few.

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Begun as the annual OpenRISC developers and users conference, it has become a broad open source digital design-oriented event and is supported by FOSSi – the Free and Open Source Silicon Foundation.

Elkim Roa spoke about OnChip, an Open Source silicon microcontroller, designed by his research group at UIS (Universidad Industrial de Santander):

Fully-tested 32-bit RISC-V microcontroller in 130nm

The slides are available as PDF on GitHub:

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OnChipUIS has several repos on GitHub related to the project including:

mriscvA 32-bit Microcontroller featuring a RISC-V core

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OnChip Open Source RISC-V microcontroller at ORCONF 2016

The Spark Gap talks Open Hardware Summit

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We’re big fans of podcasts about electronics and embedded systems like The Amp Hourembedded.fm and The Spark Gap podcast.   (Please let us know in the comments of other shows we should check out)

In the latest Spark Gap episode, Karl and Corey talk about their trip to Portland for the 2016 Open Hardware Summit:

The Spark Gap Podcast – Episode 49

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Our favorite past episodes include the two-episode discussion of PCB design:

We also enjoyed when Karl and Corey were joined by James Lewis of Kemet Electronics to talk about capacitors.

The Spark Gap talks Open Hardware Summit

Color OLED board with ESP8266 WiFi

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Mike Rankin created this adorably small WiFi-connected color OLED board:

ESP8266 Color OLED

I’ve been keeping an eye on the SSD1331 library to see if it would eventually work with the ESP8266 wifi modules. I noticed the support for it appeared one day with the Adafruit library so I tried it out on my Adafruit Hazzah and success!

miker has shared the board on OSH Park:

ESP8266-12E_0.95_Color_Oled_Rev1

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Order from OSH Park

Color OLED board with ESP8266 WiFi

PiAQ: Open Source Indoor Air Quality Sensor

UPDATE 2016-10-24: Dave Conroy of CRT Labs will present the PiAQ tonight at Chicago hackerspace Pumping Station: One

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National Association of Realtors’ CRT Labs in Chicago has developed a Raspberry Pi HAT to make information about the air people are breathing more accessible:

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The PiAQ

Open Source Indoor Air Quality Sensor for Raspberry Pi

Measurement Points:

  • Temperature (SHT31)
  • Relative Humidity (SHT31)
  • VOC (Volatile Organic Compounds) (IAQ Core)
  • Derived CO2 (IAQ Core)
  • Barometric Pressure (MPL3115A2)
  • Light Intensity (TSL2561)
  • CO Concentration (MiCS-4154)
  • NO2 Concentration (MiCS-4154)
  • Sound Intensity (ADMP401)

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Connectivity:

  • FSK (RFM69HW 433/915MHz)
  • WiFi (Particle Photon)
  • Cellular (Particle Electron) (Coming soon)
  • LoRa (Coming Soon)

Authors and Contributors

Schematics and Eagle CAD Files are on GitHub:

github NationalAssociationOfRealtors/PiAQ

CRTLabs has shared the board on OSH Park:

PiAQ HAT

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Order from OSH Park

PiAQ: Open Source Indoor Air Quality Sensor

Optical Convert Channels

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One of our favorite hardware hackers, Joe Grand, has shared slides and hardware designs from his recent B-Sides PDX talk:

Optical Covert Channels

Data exfiltration from a device is usually achieved over the network, via hardware implant, or by manipulating the characteristics of an internal electronic component. Optical covert channels transmit data using visible light in a method undetectable to the human eye.

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Joe demonstrates using an optical receiver to capture data transmitted through a LED:

joegrand has shared the receiver boards on OSH Park:

OpticSpy Digital (Rev. A)

digital version using Everlight PLR135/T9 Fiber Optic Receiver

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Order from OSH Park

OpticSpy Analog (Rev. A)

analog version based on Maxim Integrated’s AN1117 application note:

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Order from OSH Park

Optical Convert Channels

ATtiny Keychain Arcade

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Ilya Titov created this adorable, tiny keychain arcade kit:

ATtiny Arcade keychain game kit

ATtiny Arcade is a little game made using Atmel Attiny85 microcontroller and an OLED screen. The kit is a great hobby project that requires assembly with a soldering iron.

Kit contains:

  • Atmel Attiny85 microchip
  • DIP8 socket for the Attiny85
  • 2x pushbuttons
  • 2x pullup resistors
  • SSD1306 OLED screen 128×64 pixels
  • CR2032 battery holder
  • Piezo buzzer
  • Purple PCB manufactured by OSH Park
  • FDM ABS 3D printed case

Available games:

  • Breakout
  • Oroboros
  • UFO Escape
ATtiny Keychain Arcade