Sega Genesis Chiptune Synthesizer


Jarek Lupinski created this board that uses the actual Sega Genesis sound chips to play chiptune files:

Sega Genesis Native Hardware Chiptune Synthesizer

The VGM file format stores instructions for sound chips, and VGM files for many popular games can be found online. An Atmega1284p microcontroller will read these VGM files from an SD card and translate them into signals to send to the onboard YM2612 and SN76489 chips. These chips were used by the original Sega Genesis hardware to make the sound effects and music in Genesis games.

Sega Genesis Chiptune Synthesizer

RPUadpt Arduino shield


Shield for Remote MCU Node on RPU Bus

RPUadpt is a shield for multi-drop serial communication of MCU boards (Irrigate7, PPUno, PuseDAQ). Serial lines are differential pairs. It has Full Duplex RS422 (RX/TX) and out of band Half Duplex RS485 bus manager that may (TBD) help with serial bootloaders (optiboot and xboot) in a multi-drop system.

epccs has shared the EAGLE board on OSH Park:

14226^3: RPUadpt

Order from OSH Park

RPUadpt Arduino shield

Hackerbot Labs autonomous boat


Pierce Nichols and the Hackerbot Labs team are building an autonomous boat capable of doing sonar surveys of dive sites:


An autonomous boat of unusual size

Screenshot from 2016-08-26 18-48-39.pngPierce recently wrote about the latest news from the project:

Hackerboat Progress

Hackerbot Labs autonomous boat

Teensy E-Paper shield


Jarek Lupinski created a Teensy 3.x shield for e-paper displays:

Teensy E-Paper Adapter Board

E-Paper is not a simple display to drive. With manual temperature compensation, onboard power regulation requiring external capacitors, and setting up a step-up circuit, there are many factors to consider when working with this display, with the large benefit of not requiring any power to maintain its image once written.

Screenshot from 2016-08-26 20-30-31.png

I have created the simplest possible circuit necessary to drive the Pervasive Displays E2215CS062 , available from your favorite distributor. Certain parts from the reference design were substituted with US-available equivalents with assistance from the Pervasive Displays engineering team.


Teensy E-Paper shield

Books You Should Read: The Soul of A New Machine

We wholeheartedly agree with Hackaday!

If there was one book that describes what it means to be in the trenches of a cutting edge design, that book is The Soul Of a New Machine. Tracy Kidder’s Pulitzer prize-winning book has been an inspiration to thousands over the years. Soul is the story of the creation of the Data General Eclipse…

via Books You Should Read: The Soul of A New Machine — Hackaday

Books You Should Read: The Soul of A New Machine

DIY Vector Network Analyzer

What to do when a piece of test equipment is too expensive?  Henrik Forstén decided to design and build his own:

Cheap homemade 30 MHz – 6 GHz vector network analyzer

Vector network analyzer (VNA) are used to measure scattering parameters of high frequency circuits

Since I can’t afford even a used VNA I decided to make one myself with a budget of 200€, tenth of what they cost used and about 1/100 of what they cost new

The design files and source code are available on GitHub:



DIY Vector Network Analyzer

PDX Maker Week open house

We’re very excited for the PDX Maker Week on September 10th to 17th in Portland!


Please join us at our OSH Park headquarters for an open house on:

Friday, September 16th


OSH Park

311 B Ave, Suite B

Lake Oswego, OR 97034



From Downtown Portland:


From Portland International Airport (PDX):


Public Transit:

From Downtown Portland:


From Portland International Airport (PDX):

Screenshot from 2016-08-18 20-26-51

PDX Maker Week open house