555 Piano

Alexander Ryzhkov created a small 555 timer-based piano:

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555 piano

Main goal of this project has been creating pretty designed 555 based piano in small form-factor. Many 555 piano are using 9V battery for supply. I use CMOS timer and for timer need only 3V supply.
The design files are available on GitHub:

githubChirnoTech/555Piano

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Here is a video of the board in action:
openidev has shared the board on OSH Park:

piano.toplayer.zip

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555 Piano

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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Square LED

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Triangle LED

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Trixel Interactive LED Kit

ESP8266 Pogo Jig Programming Board

We like the novel orientation of pogo pins that Wing Tang Wong used in this board design:

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ESP8266 Pogo Jig Programming Board

Upcycles D1 Mini Wemos board to create a USB connected ESP8266 Pogo pin jig

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This is a board designed to take a WeMos D1 Mini board(with the ESP module removed) and use it as a USB interface with built-in reset/flash functionality for bare ESP8266 modules similar to the ESP-12 units.

The design files are available on GitHub:

github ESP8266 Programming D1 Mini Pogo Jig V1

ESP8266 Pogo Jig Programming Board

LED Matrix Generator for EAGLE

Ted Yapo is designing a display for his  LED Oscilloscope Mk. II and decided to automate the process:

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16×32 Display Design

I painstakingly drew the schematic for 512 LEDs in this display, then endured the drudgery of laying out the board. The whole process took about 45 seconds. Yes, I wrote a few Eagle User Language Programs (ULPs) (elapsed time after the scripts were written and debugged). The previous time I wrote one was last century to lay out a circular LED clock face. I figured it was about time I regained those skills.

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The EAGLE ULPs are on GitHub:

led-matrix-generator

 Eagle scripts for LED matrix display generation

LED Matrix Generator for EAGLE