The Spark Gap talks Open Hardware Summit


We’re big fans of podcasts about electronics and embedded systems like The Amp 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


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

Screenshot from 2016-10-20 13-34-36.png

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:


Screenshot from 2016-10-20 17-27-33.png

Order from OSH Park

Color OLED board with ESP8266 WiFi

PiAQ: Open Source Indoor Air Quality Sensor


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:


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)



  • 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:


Order from OSH Park

PiAQ: Open Source Indoor Air Quality Sensor

Optical Convert Channels


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

Order from OSH Park

OpticSpy Analog (Rev. A)

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

Order from OSH Park

Optical Convert Channels

ATtiny Keychain Arcade


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

Look What Showed Up For Bring-A-Hack

Hackaday was in Portland last weekend for the Open Hardware Summit. I did a brief recap earlier this week but this post has been on my mind the entire time. The night before the summit, OSH Park (the Purveyors of Perfect Purple PCBs which we all know and love) hosted a Bring-A-Hack at their headquarters. [Laen]…

via Look What Showed Up For Bring-A-Hack At OSH Park — Hackaday


Look What Showed Up For Bring-A-Hack

Open Source Hardware month events


October is Open Source Hardware month!  Join with one of these upcoming events:

Documentation Day San Francisco

Date: 10/18/2016   6:30pm
Details: David from IFTTT is away this month. Let’s meetup at the TechShop at the 2nd Floor Conference Room. More details:
Venue: Tech Shop
Location: 926 Howard street, San Francisco, CA

Parts & Crafts and Public Lab Documentation Nights

Date: October 5, 12, 19, & 26, 6-8pm
Details: Parts & Crafts — a makerspace for kids and adults — will be working to document all their existing open hardware projects — including the One Lightsaber Per Child project — & invite the public to help, learn more, and use their space to document their own open hardware. Public Lab will be hosting “upgrade your DIY spectrometer” documentation events on the 12th and 19th.
Venue: Parts & Crafts/Somerville Tool Library
Location: 577 Somerville Ave, Somerville, MA 02143

Event: Documentation Day Boulder 

Date: 10/22/2016, 1-4pm
Details: Toni Klopfenstein and Alicia Gibb are hosting a Documentation Day at SparkFun Electronics. Get some photography tips and bring the project you want to open source the most!
Venue: SparkFun Electronics
Location: 6333 Dry Creek Parkway, Niwot CO, 80544

Documentation Day NYC 

Date: 10/25/2016  5:30-9:00
Details: Michael Weinberg and Joel Murphy will be hosting a Documentation Day in New York. Details:
Venue: Fat Cat Fab Lab
Location: 224 W. 4th St., 2nd floor

Documentation Day Brazil at the Hardware Liberation Hackathon 

Date: 10/29-31/2016
Venue: PUC-SP, Campus Conceição
Location:São Paulo, SP, Brazil

Documentation Day Berlin

Date: 10/29-30/2016
Details: Addie Wagenknecht will be hosting a Documentation Day in Berlin. Details to follow.
Venue: TBD
Location: TBD

Open Source Hardware month events