Hackaday Prize Entry: A Charlieplexed Wristwatch

If there’s one thing we like, it’s blinky stuff, and you’re not going to get anything cooler than a display made of tiny SMD LEDs. That’s the idea behind this wristwatch and Hackaday Prize entry. It’s a tiny board, loaded up with an ATmega, a few buttons, and a bunch of LEDs in a big…

via Hackaday Prize Entry: A Charlieplexed Wristwatch — Hackaday

Hackaday Prize Entry: A Charlieplexed Wristwatch

Pre-Summit #BringAHack at OSH Park

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Please join us on Open Hardware Summit eve for a delightful mix of #BringAHack and open house!

When: Thursday, October 6th. 6 PM to Midnight.

Where: 311 B Ave, Lake Oswego, OR 97034

Refreshments will be served. No problem if you won’t be able to bring a “hack”. There will still be plenty of interesting things to experience!

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Uber From Crystal Ballroom (Downtown Portland):

uber-ride

Public Transit From Crystal Ballroom (Downtown Portland):

pdx-bus

 

Pre-Summit #BringAHack at OSH Park

Teensy Mitutoyo Interface

The design files and source code are available on GitHub:

githubCatherineH/teensy-mitutoyo-interface

 

CatherineH shared the board on OSH Park:

Teensy Mitutoyo Interface

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Order from OSH Park

Teensy Mitutoyo Interface

Creating A PCB In Everything: Eagle, Part 2 — Hackaday

In the last (and first) post in this series, we took a look at Eagle. Specifically, we learned how to create a custom part in Eagle. Our goal isn’t just to make our own parts in Eagle, we want to make schematics, boards, and eventually solder a few PCBs. The board we’ll be making, like…

via Creating A PCB In Everything: Eagle, Part 2 — Hackaday

Creating A PCB In Everything: Eagle, Part 2 — Hackaday

Making A PCB in Everything: Eagle, Part 1 — Hackaday

For the first in a series of posts describing how to make a PCB, we’re going with Eagle. Eagle CAD has been around since the days of DOS, and has received numerous updates over the years. Until KiCad started getting good a few years ago, Eagle CAD was the de facto standard PCB design software…

via Making A PCB in Everything: Eagle, Part 1 — Hackaday

Making A PCB in Everything: Eagle, Part 1 — Hackaday

Atmel SAMD21G Sensor Board

Mike Rankin created this tiny sensor board with an ARM Cortex M0+ microcontroller and OLED display:

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0miker0’s Blog: SAMD21G Sensor Board

It’s pretty tiny so a 4 layer board made the whole job easier. The top and bottom are pretty much dedicated for components, layer1 are tracks and power traces, layer2 is a ground plane. Mixing up an internal plane and routing layer was interesting.

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The hardware consists of:

  • SAMD21G18A processor (used in the Adafruit Feather)
  • HDC1080DMBT temperature/humidity sensor
  • ADXL345B accelerometer
  • DS1340U RTC
  • MCP73833 LiPo battery charger
  • MicroSD card connector
  • Navigation Button and pushbutton
  • 0.66″ mono oled display
  • Micro USB connector for charging and uploading new sketches

 

The design files and source code are available on GitHub:

github mike-rankin/SAMD21G18A_Sensor_Board

 

Video of the board in action:

 

miker has shared the board on OSH Park:

SAMD21G18A_Sensor_Board_Rev1

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Order from OSH Park

Atmel SAMD21G Sensor Board