davedarko created this Adafruit Trinket Pro shield for the adorable HP QDSP-6064 bubble display

trinket pro bubble display shield

for building clocks and bring them anywhere you want, even integrated a temperature sensor, if you’re into that kind of stuff

The design files and source code are hosted on GitHub:

davedarko/TrinketProShield_display

Shield for trinket pro to feature a bubble display and lm75

I created this project, inspired by the events in Texas, where a 9th grade kid called Ahmed got arrested for bringing a clock as a hardware project to school.

It is a shield for an adafruit trinket pro, based on an atmega238p with vusb.

An additional temperature sensor in the form of the LM75 can be added to this bubble display shield. The atmega32p is capable of driving up to 40mA per pin, so with the display needing 5mA per element of a digit, it should be fine, since it will be a pulsed signal and there are 8 elements max.

The display is a famous pocket calculator LED bubble display called the HP QDSP-6064.

davedarko has shared the board on OSH Park:

ProTrinket Bubble Display shield

Paul Stoffregen of PJRC created this big 7-segment countdown timer for DorkBot PDX meetings:

Big 7-Segment Countdown Timer

A few months ago I was feeling inspired to create a nice countdown timer.  With the next Dorkbot open mic only days away, I finally had the motivation to actually put it together.

The main challenge was driving the LEDs with a constant current, because they need about 10.5 volts across the several series LEDs.  I wanted to run from 12 volts, so there wasn’t much voltage left over for the normal current limiting resistors.  Instead, I used this opamp circuit.

The project runs from a Teensy 2.0.  The code is very simple, using the SPI and Bounce libraries for the hardware interfacing.

Source: http://www.dorkbotpdx.org/blog/paul/big_7segment_countdown_timer

Source: http://www.dorkbotpdx.org/blog/paul/big_7segment_countdown_timer

Source: http://www.dorkbotpdx.org/blog/paul/big_7segment_countdown_timer

Source: http://www.dorkbotpdx.org/blog/paul/big_7segment_countdown_timer

PaulStoffregen has shared his board design on OSH Park:

Shared Project: big7seg

Big 7-Segment driver. A ‘595 shift register lets you chain any number of these to build a large display.

Perfect for keeping Open Mic talks at hackerspaces on time!

Source: https://github.com/monkbroc/candlestick

Source: https://github.com/monkbroc/candlestick

Source: https://github.com/monkbroc/candlestick

Julien Vanier created this OBD-II CAN adapter for the Particle Photon or Electron boards:

CANdlestick

I wanted to make a compact internet-connected analyzer for my car’s OBD-II diagnostic port.

The WiFi-capable Particle Photon or better yet the cellular Particle Electron are great options for that.

Luckily the pins for a Photon fits right in between the 2 rows of pins of a straight OBD-II connector so it’s possible to make a very compact OBD-II adapter with a Photon.

Julien has shared the board on OSH Park:

CANdlestick R1.1

Source: https://github.com/hzeller/rpi-rgb-led-matrix

Source: https://github.com/hzeller/rpi-rgb-led-matrix

Source: https://github.com/hzeller/rpi-rgb-led-matrix

Henner has shared the his board designs on OSH Park:

Passive-RPi-3xHub75-Adapter

Active-RPi-3xHub75-Adapter

Passive-RPi1-Hub75-Adapter

Nick Sayer has created his own USB to serial converter:

Source: https://hackaday.io/project/9659-ftdi-be-gone

Source: https://hackaday.io/project/9659-ftdi-be-gone

Source: https://hackaday.io/project/9659-ftdi-be-gone

FTDI-be-gone

There are countless devices to add a traditional DB9M serial port via USB. The general problem is that when you just buy a cheap one, you don’t have any idea what’s inside. With the reminder of the recent FTDI shenanigans, it’s become more important to use modem “class” chips that use generic OS drivers rather than proprietary driver devices. Cypress Semi’s CY7C65213 is one such device. Because it uses drivers supplied by the OS, there’s no opportunity for them to attempt to weaponize a proprietary driver.

Nick has also shared the board on OSH Park:

FTDI-be-gone v0.4

Source: https://hackaday.io/project/346-canpi

Source: https://hackaday.io/project/346-canpi

Source: https://hackaday.io/project/346-canpi

RasmusB created a CAN Bus adapter for the Raspberry Pi:

GitHub.io: CANPi

This is an electrically isolated CANBUS adapter for your Raspberry Pi. Even if you screw up the connections somehow, nothing will be damaged. It also fits within the normal Raspberry Pi footprint, meaning that you can use it with most enclosures.

The board was designed with KiCAD and the design files are on GitHub:

RasmusB/CANPi

RasmusB has made the board a Shared Project on OSH Park:

CANPi v1.1

2 layer board of 1.58×1.08 inches (40.16×27.46 mm).

Alexander Shabarshin of NEDOCON has created the impressive NEDONAND homebrew computer:

NEDONAND is 8-bit homebrew computer entirely built out of many 74F00 chips (2-input NAND gates)

source: https://hackaday.io/project/9795-nedonand-homebrew-computer

source: https://hackaday.io/project/9795-nedonand-homebrew-computer

source: https://hackaday.io/project/9795-nedonand-homebrew-computer

Alexander describes the details on Hackaday.io:

I started NEDONAND in order to achieve a few goals:

•  use only 74F00 chips (2-5 ns delay per gate) to get maximum possible performance (at least 1 million instructions per second)
• 8-bit data, but 4-bit ALU (similar to Z80) with carry/borrow and overflow flags (with approach similar to 6502 where borrow is inverted carry)
• no microcode in ANY form, just 2-stage pipeline and RISC instruction set (similar to PIC – 4 ticks per cycle, 1 cycle per instruction)
• open source (public domain hardware and copylefted software) and hobbyist friendly design (only through-hole components)
• all parts will be well-documented and could be used as standalone addons in other projects
• everything simulated in Logisim first (circuits are provided as a single nedonand.circ file)
• plan to build PC-connected “testbed” to test different parts of the project separately
• If you want to purchase NEDONAND boards (I share only tested ones): OSHPark/Shaos
• Hardware files for Eagle v5.12 and gEDA (pcb): Eagle files, gEDA files (it may have some untested things).

In this video, Alexander shows part of the NEONAND program counter:

Shared Projects on OSH Park by Alexander:

NEDONAND-1

Dan Watson of the The Sync Channel Blog has been designing exciting FeatherWings (e.g. daughterboards) for the Adafruit Feather line of microcontroller development boards.  Dan wrote a nice introduction to Feather:

Helping Your Feathers Flock Together

MultiNav FeatherWing for Adafruit Feather

“The MultiNav FeatherWing is an add-on board for Adafruit Feather. It incorporates a U-Blox NEO-6M GPS module as well as an InvenSense MPU-9250 9 Degrees of Freedom (9DOF) sensor.”

 

He also added the board as as OSH Park Shared Project:

MultiNav FeatherWing

by SyncChannelBlog.

2 layer board of 2.00×0.90 inches (50.80×22.89 mm).
Shared on January 26th, 2016 04:50.

Dan also designed a FeatherWing for low-power, long-range wireless communication:

LoRa FeatherWing Development Breakout

Dan shared the board on OSH Park:

LoRa FeatherWing Development Breakout

by SyncChannelBlog.

2 layer board of 2.00×0.90 inches (50.80×22.89 mm).
Shared on February 25th, 2016 13:06.

Hari Wiguna has created a hand soldered 4x4x4 RGB LED cube that is about the size of a quarter!

The World’s Tiniest RGB LED Cube

Hari posted on Google Plus:

It is insanely tiny! [..] I could not believe they could drill a hole that small and plate it through.

Design files and code are on GitHub: 122-Worlds_Tiniest_LED_Cube

For more details, checkout the project page on Hackaday.io:

Hand soldered 4x4x4 RGB LED cube. Uses 2.7mm x 3.4mm SMD RGB LEDs.
– The cube itself is less than 1″x1″x1″ on a slightly larger custom designed PCB.
– 64 SMD (Surface Mounted Device) common anode RGB LEDs.
– All driven by an Arduino Nano (WITHOUT any shift registers)

Jedi Light Switch V1.2

Design files and source code are available:

GitHub: JediLightSwitch

Home automation light switch which responds to the Jedi wave or touch. It aims to bring the humble wall switch into the modern WiFi lighting era.

More details on the project:

Hackster.io: Jedi Light Switch 

Replace your boring old wall light switch with this Photon based switch to control Lifx lighting with touch or the wave of a Jedi.

Source: https://www.hackster.io/TinamousSteve/jedi-light-switch-67702d

Source: https://www.hackster.io/TinamousSteve/jedi-light-switch-67702d

Source: https://www.hackster.io/TinamousSteve/jedi-light-switch-67702d