- Support for 4x20 LCD Display and large number display
- Brightness and contrast adjustment with remote
- (OPUS/Wolfson WM8741) DAC volume control: remote and rotary encoder
- (OPUS/Wolfson WM8741) DAC random filter selection 1 to 5 with remote
- (OPUS/Wolfson WM8741) DAC upsampling selection (L, M, H -this is the OSR setting)
- I2C level shifting (5V to 3.3V)
- Optimized power-up sequence

Thursday, December 3, 2009

$49 Oscilloscope

A pretty good scope for audio applications. Maximum analog bandwidth is 1 MHz. However, the maximum signal you can comfortably measure is 1/10 of that or 100 KHz (this is a rule of thumb, but I don't know the theory behind it). According to this thread and this thread, the practical upper limit is about 100KHz and with some tweaks and a proper probe you can measure up to 150KHz-200KHz.

There is a Google group with discussions on this scope. Check out the "pages" section for more info on modding/upgrading the scope. The manual can be found here.

Tips & Tricks:

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