Hi Tim > interesting thread as i am working on a control-surface myself atm ... i > would be curious, if someone has some experience with higher-precision > adc? most io boards i know (arduino/makingthings) provide 10-bit adcs, > while i'd be interested in getting a higher resolution ... does anyone > have experience with interfacing a microcontroller (e.g. arduino) with an > external high-resolution adc? For regular 7-bit stuff, I'll be using a 16-input, 8-bit ADC. However, in order to get higher resolutions for the 2 x 7-bit messages, I am dropping analogue input in favour of rotary encoders. The encoders that I will be using (currently on their way from China) output a 2-bit Gray code, meaning that I can read 4 of them simultaneously using a single port. (I'll actually be using 8 in a 4 x 2 matrix, scanning them just like a keypad.) $16 USD for 10 - quite a lot cheaper than pots! If your input has to be analogue, ADCs are available with many different interfaces - synchronous serial (like the TI ones I'll be using), SPI, I2C and byte-wide, which can be accessed like external memory. Cheers M -- Matthew Smith Smiffytech - Technology Consulting & Web Application Development Business: http://www.smiffytech.com/ Personal: http://www.smiffysplace.com/ LinkedIn: http://www.linkedin.com/in/smiffy _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
