Dorkbotpdx - dorkbotpdx.org - DorkbotPDX
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Quality Audio on Teensy3 with Arduino 26 Aug 2013 | 12:09 pm
Over the last couple weeks I've been working on supporting quality audio (44.1 kHz, 16 bit) on Teensy3 using very simple Arduino style programming. This weekend I added buttons and knobs to control p...
Serge, Subotnick, and Pure Data - programming sound for dance. 21 Aug 2013 | 12:40 am
This weekend I'm performing sound for a dance piece Light Noise that I've been working on for over a year. For the past year+ I've been refining a set of patches in Pure Data (PD) that I use to create...
Audio clip player 12 Aug 2013 | 03:36 am
Yesterday I made a little audio clip player for a Monty Python Flying Circus theme party. It plays the 3 second dramatic sound for the unexpected Spanish Inquisition entrance. Click "Read more" for ...
Newbe - needs assistance in ordering 1 Aug 2013 | 04:12 pm
I am looking for assistance (I will pay for your help) to design a Power distribution board for QuadCopters. This is a two sided board with heavy copper due to the large load of up to 6 motors. The ...
Measuring microamps & milliamps at 3 MHz bandwidth 27 Jul 2013 | 03:52 pm
Recently I needed to actually "see" a current waveform in the 100 uA to 5 mA range with at least a couple MHz bandwidth. This extremely expensive probe would have been perfect, but instead I built so...
DorkbotPDX 0x0C 27 Jul 2013 | 03:00 am
When: Monday August 26th, 2013 - 8pm Where: Instrument (map) Who: All ages -- open to the public Cost: Free! Zach Archer The Hypnolamp Using LEDs and an Arduino, Zach converted a simple lamp int...
Ideal diode circuit fixing 16 Jul 2013 | 01:01 pm
At the bi-weekly meeting tonight, as promised, I brought my non-working circuit, and as promised, Paul helped me get it working. It is a circuit that allows current to flow through a p-channel mosfet...
DMX Lighting Sequence Player 1 Jul 2013 | 05:46 pm
Portland CORE effigy at Burning Man will be using DMX controlled lighting this year. At least that's the plan, but a low-cost and low-power way to automatically play the lighting sequence (without a ...
USB Virtual Serial Benchmarks 3 Jun 2013 | 08:37 am
Recently I've put a lot of work into improving USB virtual serial receive speed. Here's a detailed article with complete source code for the benchmarks.
AD75019 Crosspoint Analog Switch 28 May 2013 | 02:51 am
On my post about the regression test set, jeppius asked if I had sample Arduino code for these AD75019 chips. Click "Read more" for the Arduino code and details.... First, a bit of background. The ...
