notes.splitbrain.org

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====== Sleepy ======

  * http://www.stuffaboutcode.com/2014/06/raspberry-pi-adxl345-accelerometer.html
  * Connect ground to SD0 (see stackoverflow)
  * Raspi <-> GPIO connector, make sure ribbon cable connected right (silver up at Raspi, blue up at adapter)
  * permissions ''sudo usermod -G i2c pi''

===== Accelerometer =====


  * Klinke http://www.produktinfo.conrad.com/datenblaetter/700000-724999/718612-da-01-en-KLINKENBUCHSE_3_5_MM_4_POLIG.pdf

^ RasPI ^ Buchse ^ Sensor ^
| 3V (rot) | Pol 4 (oberer Kontakt) | (braun) VCC |
| GND (schwarz) | Pol 3 (hinten oben) | (Litze) GND |
| SCL (orange) | Pol 2 (hinten links) | (grün) SCL |
| SDA (brown) | Pol 1 (hinten rechts) | (weiß) SDA |

===== Temperature =====

https://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/hardware

| Orange | 3V |
| Yellow | GPIO #4 |
| Green  | GND |


  sudo modprobe w1-gpio
  sudo modprobe w1-therm
  cat /sys/bus/w1/devices/28-000005d40596/w1_slave

===== Speaker =====

GPIO 18

right input and output

mono files


  gpio mode 1 out
  gpio write 1 1
  play test.wav -c 1 repeat 3
  gpio write 1 0

===== Buttons =====

  * Button right: GPIO #17
  * Button left: GPIO #27