RSVP Required, email to email@example.com. Limited to 15 people.
This hands-on microcontroller audio workshop will show you how to use a Teensy 3.2 and codec chip to generate and playback CD quality sound, and process and analyze audio in real time.
Instructor: Paul Stoffregen
The Build Your Own Teensy MIDI Encoder Workshop will show you how to use a Teensy 3.1 to create a MIDI encoder that sends MIDI OUT messages over the Teensy's micro-B USB plug.
During the workshop, you will build a serial-to-parallel, parallel-to-serial switch matrix using a Teensy 3.1, a breadboard, IN4148 diodes, and reed switches (if you wish to validate the switch matrix). Darin will demonstrate how to write the switch matrix scan code and how to encode the simulated keypress signals into MIDI OUT messages using the Arduino/Teensy Keypad and MIDI libraries. Extending the code to accommodate MIDI IN, velocity sensitivity and other MIDI messages, as well as using shift registers (74HC595 and 74HC165), will be discussed.
Recommended hardware and software for the workshop:
- Teensy 3.1 or 3.2 with header pins
- Micro-B USB cable
- Breadboard with jumpers
- 1N4148 diodes
- Reed switches and magnets (optional)
- Laptop loaded with:
Unfortauntely this workshop has been post-pwned due to mechanical issues, please come to Ctrl-H for a free Open Lab Sunday September 27th instead!
- Laptop with Teensyduino installed
- Phillips head screwdriver (electric is probably best)
- 2 wrenches, either 7/8", 11 mm, or adjustable
- A pair of socks, old shorts/pants, fake blood, etc for decoration.
- $35 for the kit. Comes with:
- Optional: Switches / sensors to trigger the kit
Often I throw together a quick demo for the bi-weekly DorkbotPDX meetup, usually involving one or more pots to adjust parameters. Finally, I've come up with a pretty good way to put pots on solderless breadboards.
Click "Read more" for details and the shared PCB....
DORKBOTPDX June 2015 Workshop: Solar Power Charger Workshop
Experiment with solar panels and the other bits needed to charge Lithium Ion batteries via USB.
Using a $1 TOSLINK connector, or just a red LED, you can get optical S/PDIF digital audio output.
Optical output is useful for projects where Teensy connects to grounded equipment. There are lots of ways to simply play sounds, but the Teensy Audio Library gives you Arduino-sketch controlled synthesis, mixing, effects & filters, analysis and much more. Sketch controlled sound is most useful when you connect more hardware to Teensy & use other Arduino libraries for inputs. But often that other hardware comes with ground connections that cause audio-corrupting ground loop problems with analog audio, like the DAC pin or the audio shield. Optical S/PDIF give you perfect digital audio output for those projects!
Click "Read more" for much more detail about the S/PDIF development....
Spent a good portion of the weekend fiddling with insanely bright 10 watt RGB LEDs.
Trying to make very low-cost DMX protocol control, of course for a Burning Man project that's planning to use 150 of them!