* Setup
#+BEGIN_SRC sh
virtualenv --no-site-packages --distribute .env
source .env/bin/activate
pip install -r requirements.txt
#+END_SRC

* Connect to serial port
#+BEGIN_SRC sh
picocom /dev/ttyUSB0 -b115200
#+END_SRC

* Copying file
#+BEGIN_SRC sh
ampy --port /dev/ttyUSB0 put hcsr04.py
#+END_SRC

* How to connect things
** Distance measuring
*** HCSR04 Pins
| Pin on component | Pin on card |
|------------------+-------------|
| Trig             | D2          |
| Echo             | D3          |
| Vcc              | 5V          |
| GND              | GND         |

*** Set up distance measuring
#+begin_src python
import time

while True:
    print(getDistance())
    time.sleep(1)
#+end_src

** Movement sensor
*** Sensor pins
| Pin on component | Pin on card |
|------------------+-------------|
| 5V               | 5V          |
| GND              | GND         |
| OUT              | D4          |

*** Set up movement sensor
#+begin_src python
import time

while True:
    print(getMovement())
    time.sleep(0.5)
#+end_src

** Relay
*** Pins
| Pin on component | Pin on card |
|------------------+-------------|
| Vcc              | 5V          |
| Gnd              | GND         |
| In1              | D5          |
| In2              | D6          |

*** Set up relays
#+begin_src python
# Use this to reset the state of the relay
resetRelay()

# Move table up
toggleRaiseUp()

# Move table down
toggleLowerDown()

# To go up and down and measure distance and stuff at the same time
goCrazy()
#+end_src