Recently I put some work into efficiently generating sine wave data intended for testing 24 bit audio hardware. Here's a quick message about this new work, in case anyone's interested....
I just thought I'd post some random photos and projects from the last DorkbotPDX meeting. Lots of fun stuff.
Tom Hudson brought his shaking haunted house. He worked on it with his coworkers at OMSI. It uses a saber saw as the shaking mechanism. Pretty sweet. He's posted an Instructable about it if you're more interested.
Mykle Hansen brought his Teensy Synth project. It made some sweet, crunchy sounds. I think it is based off of this project.
Mathew Lippincott brought his Portal Gun from Rick and Morty. It used an 800 lumen flashlight to project the portal! Very cool!
Scott Dixon brought a new robotics platform that he's playing around with. It's not hooked up to his Bluetooth Barbie steering wheel yet, but maybe soon. I didn't catch what the platform actually is, maybe he'll chime in on the comments.
Here were some folks playing with using balloons to diffuse LEDS. Reminds me of this project.
Fun projects, great to see so many projects on display!
RSVP Required, email to firstname.lastname@example.org. 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....