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| LED Ring Working Prototype | |
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Date: 2/3/2013 Tags: mc1 axefx led-ring | Here is my LED ring from the previous post working in real
hardware: |
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| RGB LED ring PCB | |
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Date: 24/1/2013 Tags: axefx mc1 led | I've been working towards my own RGB LED ring PCB:
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| Intel HD4000 has no DVI output | |
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Date: 14/1/2013 Tags: HD4000 dvi | Symptoms: Windows 7 boots up, shows the splash and then the
monitor goes to sleep. Problem: The DVI display is not detected, however there is output available on the HDMI port. Solution: Unplug and re-plug the DVI port. (omg indeed) |
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| Python's .py Windows Association | |
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Date: 11/10/2012 Tags: python | Posting for future reference: Windows is not passing command line arguments to Python programs executed from the shell. This solved my problem with passing arguments to python scripts without invoking the python binary first. |
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| Converting audio samples to dB and back | |
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Date: 26/4/2012 Tags: audio | I've been writing a tool to normalize lots of audio files at once, as well as convert between various loss-less formats (particularly FLAC and WAV). In doing that I needed a way of converting between the raw audio sample maximum and dB. So I present to you my C functions for doing so:
double LinearToDb(int32 linear, int bitDepth)
{
uint32 MaxLinear = (1 << (bitDepth - 1)) - 1;
uint32 ab = linear >= 0 ? linear : -linear;
return log10((double)ab / MaxLinear) * 20.0;
}
int32 DbToLinear(double dB, int bitDepth)
{
uint32 MaxLinear = (1 << (bitDepth - 1)) - 1;
double d = pow(10, dB / 20);
return d * MaxLinear;
}
Another code snippit for Google to index.
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| XCode: error from debugger: the program being debugged is not being run. | |
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Date: 14/4/2012 Tags: mac xcode | If you are getting this in your XCode run log:
Running... No executable file specified. Use the "file" or "exec-file" command. No executable file specified. Use the "file" or "exec-file" command. The program being debugged is not being run. The program being debugged is not being run.After copying a project and renaming everything... then you missed the "executable name" on the target. Click your Target, and "Get Info", then click the Properties tab, and rename the Executable to the same name as the Product Name in the Build settings. |
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