Large LCD Reverse Engineering

Years ago, around the time DorkbotPDX's meetup moved from Vendetta to NW Lucky Lab, Ben Bleything brought LCDs from decommissioned point-of-sale terminals to the meetup.  I did some reverse engineering to get them working!

At the time, I wrote 3 blog articles aboug the reverse engineering effort.  Only one of them survived from the early days of this website.  Recently, I found the original text those old 3 articles, and also a small pile of the LCDs... which I'll be giving away at upcoming meetings!

Click "Read more" for those 3 original articles with the fine details of reverse engineering (and source code) for these old LCDs....

Three New Instructables

I've recently posted the following instructables:

1) Modifying the output Voltage of an Adjustable AC-to-DC Converter

http://www.instructables.com/id/Modifying-the-output-Voltage-of-an-Adjus...

2) Hall Throttle Control of an RC Motor ECS

http://www.instructables.com/id/EBike-Throttle-Control-of-an-RC-Motor-ECS

3) Telephone Ringer Visual Alert (LED)

http://www.instructables.com/id/Telephone-Ringer-Visual-Alert-LED

Capacitive Sensing Workshop

  • What: Learn about capacitive touch sensing, the same technology your phone's touch screen uses. In this workshop we will draw a sensor using a pencil and hook it up to a Teensy to light up LEDs and generate MIDI events.
  • Instructor: Philip Odom
  • When: Sunday June 29th, 1-5pm
  • Where: Flux (412 NW Couch, #222) Goldsmith Building. Look for doorbell on wall for entry.
  • Cost: $25
  • Bring: Laptop with Teensyduino installed, soldering iron, wire cutters, usb mini cable, pencil
  • Limited seating, RSVP: bzzt@knowhere.net

TinyPrime

I'd been meaning to do this for a while, and when I got a bag of colorful little breadboards, it was TIME.

ByteBeats Clean w/ Teensy-3.1

Here's a clean version of the ByteBeats circuit we built last Sunday.  I used a Teensy-3.1 instead of a Teensy-2.0, but everything else is more-or-less the same.  (I added some capacitors on the power lines, a volume control and a speaker instead of the headphones, but it's all minor changes that anybody at a Dorbot meeting could help you with.  Or email me, I'll go through it with you.)

The ByteBeats workshop went pretty well: everybody left with a working circuit, although there were some hiccups along the way.

I hope you all enjoyed the project.  Keep in mind: the same circuit can be used for a bunch of different audio hackery by changing the software.  For example, I wrote a program to produce sine waves at regular musical-scale intervals.  It's a short step from there to playing MIDI, I imagine.

Maker Faire 2014

Maker Faire went really well.  I had a booth about the new audio library, and we also built a OctoWS2811 LED display for Freescale's booth.

Click "Read more" for more photos...

Byte Beats Workshop

 

 

Learn how to create the amazing sounds which have been dubbed ByteBeats without a computer!

 
What: Students will learn how to interface a microcontroller with a DAC (Digital Analog Converter) and an audio amp to produce sound.
Instructor: David Madden
When: Sunday May 25th, 1-5pm
Where: Flux (412 NW Couch, #222) Goldsmith Building. Look for doorbell on wall for entry.
Cost: $30 dollars for the kit.  Kit includes:  Teensy, Breadboard, DAC, op-amp, hookup wires, and audio jack.
Bring:  Laptop, Headphones, Wire Strippers, and USB mini cable
Limited seating:  RSVP bzzt@knowhere.net 
 

Roasting coffee the old fashioned way...

...with a popcorn popper and a microcontroller!   More to come...

Processing Fundamentals

DorkbotPDX invites you to "Processing Fundamentals".

A free workshop at Flux

DorkbotPDX is happy to offer a 4-hour intro to Processing -- a graphics programming environment. Students will learn the basics of Processing.
No prior programming experience required!

 

  • When: Sunday, April 27. 2-6pm
  • Where: Flux Hackerspace (412 NW Couch #222, Portland, OR)
  • Cost: FREE!!!
  • Bring: A laptop with Processing 2.0 installed (if you can)
  • RSVP: bzzt@knowhere.net

Source code: Processing_Fundamentals

Built with Processing and Processing.js

Anyone recommend a beginner 3d printer?

Hey everyone! I'm the lead organizer for the Portland Indie Game Squad. Our funding project recently surpassed most of its goals – which are all resources being made available to the community – and I'm coming up with some higher-tier options. A 3d printer is definitely on my list for the board game/miniature game developers in the group, and I've been asking around for what people might recommend as a "beginner" setup, somewhere between $400 and $600.

Syndicate content