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paper_bits:pb704_raspi-bit [2017/11/23 14:48] admin [change the PWM audio pins] |
paper_bits:pb704_raspi-bit [2017/11/25 17:25] admin [Negative Voltage Source] |
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| <a href="https://cdn-learn.adafruit.com/assets/assets/000/028/850/original/raspberry_pi_audio.png?1449170282"> | <a href="https://cdn-learn.adafruit.com/assets/assets/000/028/850/original/raspberry_pi_audio.png?1449170282"> | ||
| <img src="https://cdn-learn.adafruit.com/assets/assets/000/028/850/original/raspberry_pi_audio.png?1449170282"></a> | <img src="https://cdn-learn.adafruit.com/assets/assets/000/028/850/original/raspberry_pi_audio.png?1449170282"></a> | ||
| + | </html> | ||
| + | |||
| + | <html> | ||
| + | <a href="http://www.softwaresamurai.org/wp-content/uploads/2017/10/rpiZ-GPIO.png"> | ||
| + | <img src="http://www.softwaresamurai.org/wp-content/uploads/2017/10/rpiZ-GPIO.png"></a> | ||
| + | </html> | ||
| + | |||
| + | <html> | ||
| + | <a href="https://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/s2003/gsh7/ECE476/DAC0808.gif"> | ||
| + | <img src="https://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/s2003/gsh7/ECE476/DAC0808.gif"></a> | ||
| + | </html> | ||
| + | |||
| + | <html> | ||
| + | <a http://www.circuitstoday.com/wp-content/uploads/2011/06/MC-1408-Digital-to-Analog-Converter.jpg"> | ||
| + | <img src="http://www.circuitstoday.com/wp-content/uploads/2011/06/MC-1408-Digital-to-Analog-Converter.jpg"></a> | ||
| </html> | </html> | ||
| Line 17: | Line 32: | ||
| Or like on [[https://othermod.com/raspberry-pi-zero-audio-circuit/]]\\ | Or like on [[https://othermod.com/raspberry-pi-zero-audio-circuit/]]\\ | ||
| Open: | Open: | ||
| - | $ sudo nano config.txt | + | $ sudo nano /boot/config.txt |
| Add: | Add: | ||
| dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4 | dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4 | ||
| ---- | ---- | ||
| + | ==== DAC ==== | ||
| + | DAC0808: [[http://www.ti.com/lit/ds/symlink/dac0808.pdf]]\\ | ||
| + | MC1408: [[http://pdf.datasheetcatalog.com/datasheet/philips/MC1408-8_3.pdf]]\\ | ||
| + | Example: [[https://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/s2003/gsh7/ECE476/archive.htm]]\\ | ||
| + | ---- | ||
| + | ==== Negative Voltage Source ==== | ||
| + | [[https://www.allaboutcircuits.com/projects/build-your-own-negative-voltage-generator/]]\\ | ||
| + | [[http://www.stephenhobley.com/blog/2011/03/28/creating-a-negative-voltage-from-a-positive-one/]]\\ | ||
| + | |||
| + | ---- | ||
| + | ==== Pure Data ==== | ||
| + | **PD WiringPi**\\ | ||
| + | [[https://sourceforge.net/projects/pdwiringpigpio/]]\\ | ||
| + | **pdwiringPi**\\ | ||
| + | [[https://github.com/garthz/pdwiringPi]]\\ | ||
| + | |||
| + | ---- | ||
| ==== Links ==== | ==== Links ==== | ||
| [[https://learn.adafruit.com/introducing-the-raspberry-pi-zero/audio-outputs]]\\ | [[https://learn.adafruit.com/introducing-the-raspberry-pi-zero/audio-outputs]]\\ | ||