3D Printed USB Connector

chmod775 on Hackaday.io designed this simple 3D Printed USB Connector compatible with PCBs from OSH Park:

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3D Printed USB Connector

I’ve made this 3D USB Connector because I want to remove the chunky and complex standard metal USB Connector from my new upcoming project.
The design it’s made to be simple and with the height reference from the OSHP ark PCB’s.

 Screenshot from 2017-04-12 21-44-59
3D Printed USB Connector

Biomed Shield for Arduino 101

From Orlando Hoilett of Calvary Engineering on Hackaday.io:

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Biomed Shield for Arduino 101

A sweet Arduino shield with a ton of cool sensors for physiological parameters such as heart rate and breathing rate

The features include:

  • Heart Rate Monitoring with the MAX30101
  • Pulse Oximeter with the MAX30101
  • Electrocardiogram, Electromyogram, and Electrooculogram with our Super Simple EXG Circuit
  • Bioimpedance with the AD5934
  • Body Temperature with the MLX90614
  • Ambient Light with a CdS Photocell
  • Ambient Temperature with a Thermistor

The design files and source code are available on GitHub:

github-smallCalvEngIO/BiomedShield

Biomed Shield for Arduino 101

Crazy Circuits launches on Kickstarter

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Crazy Circuits: Unique STEM Projects Delivered Monthly

Create fun STEM and STEAM electronics projects with parts delivered to your door.

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Crazy Circuits is a non-soldering electronic learning platform that allows people to create circuits from almost any material they can imagine. Crazy Circuits are designed to pop onto LEGO™ bricks, enabling your LEGO™ creations to shine, move, and make noise. Use Crazy Circuits to construct paper crafts with conductive tape, use conductive thread for sewing, and create art with conductive inks and paints. You can even program sketches with Arduino compatible Crazy Circuits boards. No matter what you want to build, Crazy Circuits brings it all together.

Crazy Circuits launches on Kickstarter

Build a Synthesizer with Darcy Neal in Chicago

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Darcy Neal will lead a workshop in Chicago on building your own synthesizer:

https://www.meetup.com/Solder-Stitch-And-Code/events/238959615/

We’ll learn about some of the building blocks of creating a synthesizer using the 4046 VCO and the classic 40106 CMOS ICs. The 4046 is a well documented and powerful IC that can be turned into a modular synth voice with just a few added components. Participants will learn to solder together their own prototyping PCB, build a circuit on a breadboard from a schematic, experiment with sensors, and learn the basics about how to produce custom circuit boards using design software like Kicad and Fritzing. No experience is necessary, but basic electronic knowledge or a strong interest in synths will be helpful.

Build a Synthesizer with Darcy Neal in Chicago

Hand-drawn PCB Artwork

Blake Ramsdell has posted a new batch of hand-drawn PCB artwork on Hackaday.io:

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PCB Painting Large Pieces

David I. Herman made some impressive new PCB painting pieces, demonstrating subtleties in shading and Art Nouveau inspiration, precision produced by OSH Park

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We are trying to figure out what direction to take this blend of technology and art — should we offer pieces for sale, or offer a service for making your own pieces from your own artwork, for instance. We’re certainly going to continue to explore it from a technology and art creative point of view. If you feel inclined, please take a moment to leave a comment, we are interested in your feedback!

 

Hand-drawn PCB Artwork

Rotary Encoder Breakout with Pull-up Resistors

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This breakout board designed in KiCad makes it easy to put a rotary encoder and pull-up resistors on a breadboard.  (Thanks to Enrico for the idea to add pull-up resistors).  The footprints on the back are meant for 1206 SMD resistors.  I choose 1K Ohm resistors, marked 102, when I assembled this board.

Additional photos are available in the GitHub repo’s images directory and in a Google Photos gallery.

Here is the OSH Park shared project for the board:

Rotary Encoder Breakout with Pull-ups

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Order from OSH Park

The KiCad design files are available on GitHub:

github-smallpdp7/rotary-encoder-breakout

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I used this KiCad symbol and footprint by Mike Cousins for a Sparkfun rotary encoder:

github-smallmcous/kicad-lib

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I’ve verified that these rotary encoders fit:

I wrote this Arduino sketch to run on the Teensy 3.2.  The brightness of one LED is controlled by the rotary encoder knob.  The other LED is turns on when the rotary encoder knob is pressed down:

arduino-smallrotary-encoder-test.ino

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Here’s a video of the breakout board being used with a Bourns PEC12R-4220F-S0024 and Teensy 3.2:

Rotary Encoder Breakout with Pull-up Resistors

Trixel Interactive LED Kit

Arkadi designed this interactive LED kit:

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Trixel LED

Create your own interactive Light elements by soldering basic shapes, such as triangle, square, pentagon and hexagon to create an interactive LED sculpture.

Here’s a video of the Trixel LED boards in action:

The design files are available on GitHub:

arkadiraf/Trixel-LED

 

Arkadi_Raf has shared the boards on OSH Park:

Pentagon LED

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Order from OSH Park

Square LED

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Order from OSH Park

Triangle LED

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Order from OSH Park

Trixel Interactive LED Kit

SoundBeacon

Patrick Van Oosterwijck created an audio BLE beacon that can be activated by the vision impaired to find exact locations of doorways, bus stops, crosswalks, and more:

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SoundBeacon

The idea is that a blind person uses a navigation app, and can query to see “what is around”. In the list of beacons that are around, they can tap the one they want to know the location of and it will start to produce an audible signal for a short time.

The BLE module is configured as an iBeacon and allows connections. It has a battery service and an “Immediate Alert” (AKA “Find me”) service.

Patrick used the following to build the prototype:

  • A 550 mAh 3.2 V LiFePO4 cell
  • A #LiFePO4wered/Solar1 prototype to charge the battery
  • A 5.5V, 0.6W monocrystalline solar cell
  • A Silicon Labs (formerly BlueGiga) BLE113 module
  • A beeper that works very badly (better solution needed)
  • And a IP65 enclosure

xorbit has shared the booster for loud piezo beeper on OSH Park:

PiezoBoost

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Order from OSH Park

SoundBeacon

Pidgeon 1 Sub-GHz Radio

Pidgeon 1 on Crowd Supply is a sub-GHz radio with 500 mW transmission power, RS485 networking interface and a STM32F0 microcontroller:
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Crowd Supply: Pidgeon 1

No more restrictions from high level software! Access the lowest level of digital radio transmission with this programmable sub-GHz wireless module.

Hardware Specifications:

  • Radio – CC1120 + CC1190
  • Controller – STM32F051K6
  • FTDI USB interface – FT234XD-R
  • RS485 interface – LTC2850IDD
  • Buck converter – RT8010GQW
  • SMA connector for antenna
Pidgeon 1 Sub-GHz Radio