- 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

Wednesday, April 22, 2009

Modified IR receiver

I removed the resistor from the output pin of the IR receiver to the Arduino input pin. After reading some data sheets, what is recommended is a pull-up resistor to VDD. Since Arduino pins have built-in pull-up resistors, I enabled it in software.

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