Make your own PCB with Eagle, OSH Park, and Adafruit

Bryan Siepert has published a new Adafruit guide on creating custom circuit boards with EAGLE:

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Make your own PCB with Eagle, OSH Park, and Adafruit!

This guide will introduce you to the basic process I use to build PCBs based on Adafruit and other open source designs. We will extract parts of the board files as what Eagle calls “Design Blocks” and then we will use them along with a fundamental workflow in Eagle to create a featherwing-like board for the Trinket M0. This board will allow you to securely attach the Adafruit INA219 current sensor breakout to a Trinket without having to use jumper wires to connect them together. We’re starting with this modest goal to keep things simple as we learn some fundamental concepts, while hopefully also ending up with a useful circuit.

This guide will cover using a Trinket M0 and INA219 breakout, however these same methods can be used to make a PCB to replace the breadboard or protoboard. These techniques can be used to extract useful pieces from open source boards to use in your own completely new circuit boards.

Make your own PCB with Eagle, OSH Park, and Adafruit

#badgelife add-on adapter for Adafruit LED matrix

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Adapter board to attach Adafruit 8×8 LED Matrix board as #badgelife add-on (using the DC26 SAO 2×2 pin header)

KiCad design files:

OSH Park shared project:

#badgelife add-on adapter for Adafruit 8×8 LED matrix

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MicroPython support:

 

Resources:

#badgelife add-on adapter for Adafruit LED matrix

GlowSaber

Carlos Vadillo and Bx Dawes created the GlowSaber project to help kids in Alameda learn about physics, engineering and programming:

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Building the GlowSaber main board

All the logic, sound and light effects of the GlowSaber are performed by a small microprocessor board. In this tutorial I will explain, step by step how to put together the main board of a GlowSaber.

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Building the GlowSaber handle

One premise that I had while designing the GlowSaber was that I should be able to build all of it with tools that I already have. That limited the materials I could choose to those that I could cut, drill and glue with just the basic tools:

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GlowSaber RGB LED assembly

The GlowSaber uses a Vollong 3 watts RGB LED. It is very bright and more than enough to light the length of the blade. When designing the GlowSaber I found that I needed a way to connect the LED to the main PCB and I designed a LED break out

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How to use a potentiometer to change the behavior

The GlowSaber has a switch assembly, that controls the on/off functions. It also has a LED to show that the GlowSaber is ready to start, and finally has a small 1 kΊ potentiometer. The following is a schematic of the switch assembly:

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cvadillo has shared the board on OSH Park:

GlowSaber

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GlowSaber

Arduino Pro Trinket Bubble Display

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davedarko wrote in his LED displays on Arduinos – a collection project log on hackaday.io:

Arduino Pro Trinket – bubble display

With 4 of HP QDSP-6064 bubble displays in a drawer I felt ready to do something with them and the “Clocks for Social Good” – call on hackaday.com finally got me going

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The design files are available on GitHub:

davedarko has shared the board on OSH Park:

ProTrinket Bubble Display shield

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Arduino Pro Trinket Bubble Display

Capacitive touch with Teensy

The Teensy 3 and Teensy LC have several pins that can be used as capacitive touch inputs.  I designed this board in KiCad to experiment with cap touch buttons:

Teensy LC cap touch demo

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I used the CAPSENSE_CIRCLE component and footprint from the Wickerlib KiCad library to create the cap touch buttons:capsense-combo

Bill of Materials:

GitHub

 

Capacitive touch with Teensy