![]() ![]() (I've since acquired and assembled a DPScope, they're excellent.) As such, the design process was very much empirical, and I had fun swapping parts to see what worked best without the worry of frying a few pennies' worth of electronics.Īlso, missing from these schematics is an Arduino. I didn't have an oscilloscope when I built the tuner, so I did a lot of fiddling with component values using just a multimeter and a few speakers to listen for noise. Google Driveįor the Google Docs link, you can use the File/Save option to save the archive to your disk.įirst off, I am far from being proficient with hardware design my experience is quite limited, and I'm much more comfortable with digital than analog. Original code used in the device, tested builds against Arduino 0.22.This has been built against Arduino 1.6.10 but not tested on a physical device. You can get the code from the following links: There is a bypass switch, a backlight switch for the LCD and a contrast ratio pot the whole thing runs on either DC power or a 9V battery. Tuning can be adjusted by moving A up or down a few hertz from 440. It accepts analog input from a standard 1/4" TRS jack, performs monophonic pitch detection on it, and either displays tuning information or outputs MIDI signals based on the detected pitch. :P Also, since I no longer have the device in my possession, having given it away at the gift exchange, I'm unable to take new pictures of it, and I'm stuck with cruddy webcam pics.Īs seen in the video, the device has a few functions. I'll try to provide a bit more detail than usual in this writeup, but keep in mind this project is almost two years old so the details are getting hazy. ![]() ![]() Over time the video has elicited many technical questions from viewers, questions which I couldn't answer in full detail until now for reasons unnamed. ![]()
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